初中英语作文必背范文20例
（1）如何学好英语
English is important and useful to us , How can we learn it well? Here are my
suggestions.
First, we should often listen to the tapes ,English songs and English programs.
Watching English movies is also helpful to us .Second, we should speak English in
class as much as possible. Don’t be afraid of making mistakes. The more you speak, the fewer mistakes you will make, we’d better join the English club and practice with others . Third, we can read more English newspapers and magazines.
It’s good for us. At last, we should recite （背诵）some good passages and keep
diaries . In a word , as long as we do more listening, speaking, reading and writing,
we will learn English well .
（2）保持健康之我见
It is very important for us to keep healthy.
There are many ways to be healthy. We should eat more fruit and vegetables. We
should exercise for at least one hour every day. We need enough sleep and rest ,
so it is important to go to bed early. Besides, we should wash our hands as often
as possible. In my opinion, we mustn’t drink wine or smoke, They are bad for our health. We should also stay away from junk food.
—— 正确面对你的压力
（3）Less Pressure Make Better Life——
Pressure is a serious problem in today’s world. Most students in our class are
under too much pressure. Some students can’t get on well with their classmates,
while others may worry about their exam .
I’m always under pressure, too . My parents wanted me to be the top student in
class. They made me study all day . They even sent me to all kinds of classes on
weekends .
I had a talk with my parents and told them I had done my best . Finally they
understood me. In this way , I feel less stressed out so that I can study harder .
Less pressure makes better life. Thank you!
我们的校规
（4）Rules of My School ————
There are lots of rules in my school. For example, we must clean our classroom
every morning. I think it’s necessary for us to keep it clean . And it’s als for our health .We have to wear school uniforms every day .I think the uniforms
are ugly . In my opinion, we should be allowed to choose our own clothes or
design our own uniforms. We can’t talk in the classroom. Keeping quiet is good
for studying. We mustn’t play on the road. Playing on the road is very
dangerous. Of course, we can’t fight with others, we should be friendly to each
other. Besides, we can’t drink or smoke. They are bad for our health..
I think most of the rules are good for us ,we should follow them.
(5) Hainan Island————海南简介
Hainan Island is in the south part of China. It’s the second largest island in China.
It’s a good place to visit. The weather is warm. It’s neither too hot in summer
nor too cold in winter(It’s neither too hot nor cold al the year round.) .On Island
Hainan , you could enjoy bright sunshine, fresh air and beautiful scenery. If you go
there , you’ll never forget there forever.
There, you can see many banana trees and coconut trees, and you could enjoy
bananas, coconut juice and all kinds of delicious seafood. There, you could find
many beautiful beaches and walk along the seaside with your family or swim in
the sea. You can go fishing and boating too. I think it’s the best place to visit. I
m sure you will have a good time there.
(6)Good Habits————你知道怎样保持健康吗？
Everyone has different habits. Good living habits and behavior habits can make us
healthy and happy. As a student, what should we do?
I think everyone should get up and sleep on time every day. Don’t play or watch TV all night. That is bad for health and affect our work . Don’t disturb our rest .We should eat more vegetables and fruit, but eat less meat. I
neighbors’
advise everybody to take more physical exercises(do more sports). Don’t eat jun food. Don’t litter or spit everywhere. Of course , we can’t play on the road . We must obey the traffic rules. Don’t cross the road when the traffic light is red.
In a word , if we want to keep healthy and happy, we must have good living habits
and behavior habits. Do you think so?
（7）————— 毕业前你想为学校做些什么？
Dear David, last week we held a discussion on what we should do for our school
before we graduate. The students in our class have different suggestions.
Some students think that we can collect money to buy some books for the school
library or something else for our school. Other students think that it’s not necessary to spend money. We should study hard and make our school feel proud
of us.
In my opinion, we don’t have to spend money. We can do something meaningful
without money. For example, we can do something to make our school beautiful
and protect the environment well. Of course, we should try our best to get better
grades in the coming exams so that our school will be proud of us.
I’d like to know your idea, could you give me some advice? Best wishes !
（8）———— 我应该住家里还是住学校呢？
Dear Bill, how is everything going? Something is troubling me very much. So I
writing to ask for your advice .
I’m going to study in the senior middle school in September. I can live either at
school or at home. I can’t decide because both have advantages and
disadvantages.
At home, I have my own room, so I have a good sleep and have a quiet study
environment. However, I have to share one room with 5~6 students at school,
maybe I can’t sleep well. Although I can have better food at home, I enjoy eating
with my classmates, I think it has a lot of fun. And I can make more friends at
school. If I live at home, I’ll have to ride to school. It’s a waste of time and no very safe.
It’s hard for me to make a decision. I’ll be very glad if you could give me some suggestions. Please write back to me soon.
（9）————如何学好英语的调查及自己的观点
We made a survey on how junior middle school students study English. Here is the
result.
About 30%of the students study English by reading English magazines or
newspapers, and about 10% of them are interested in watching English programs
on TV.
In my opinion, we should spend at least half an hour in reading the textbooks and
learning words by heart every day. Listening to tapes and keeping English diaries
are very useful, too. Singing English songs is also a good way for us to improve
our daily English. What’s more, we should often practice speaking English not
just in class but also out of class. As we all know, “Practice makes perfect.”．I’m sure we’ll make great progress if we keep on working hard at it.
低碳，让生活更美好
（10）Lower Carbon, Happier Life ——
It’s our duty to save the environment. I will go to school by bike or on foot
instead of taking the bus. And I will also ask my parents to ride bikes to work. At
home, we will use energy-saving lamps and spend less time when we are taking a
shower. Don’t throw away the used textbooks and leave them to the lower
grades. At the same time, I will ask my parents to take bags when they are
shopping and I will also do that. I will turn off the lights before leaving.
Lower carbon, happier life, Let’s take action.
谈谈我们自己喜爱的科目
（11）My Favorite Subject————
English is my favorite subject because English is used widely in the world,
especially in Yi Wu, a city with too many foreigners. English is more and more
useful, many books in the world are written in English .What’s more, I like it because my English teacher is kind and friendly to me.
In order to learn English well, I read English aloud every morning and listen to the
teacher carefully in class. After class, I often watch English programs and keep an
English diary every
day. In a word, I love English and I will continue to learn it better.
你表现好吗？
(12)How to Behave Well?—————
As a student, we should behave well. First, I think it’s very important to do everything on time and keep promises. Never lie to others or say dirty words.
Next, we should be polite to others and ready to help people in need. Then we
better not talk loudly in public. Don’t throw little or spit about. And remember to
obey traffic rules.
Finally, learn to work with others and how to get on well with others , We need
good team work in our life. Do you want to behave well and be more popular?
（13）————给音乐节目主持人的一封信
My name is Li Ming, I’m a middle school student. I like listening to music, so I
often listen to your music program. I like the program very much, especially the
English songs.
As a student, I’m busy with my studies. When I feel tired, I will turn on the radio
and listen to your program , that makes me so relaxed. I’ve also learnt many English words from these songs. I think it’s very helpful.
Of all the English songs, I like My Heart Will Go On best. Would you please send
me the words of the song? Thank you !
（14）————丰富多彩的校园生活
I love school time very much, though it is so busy and sometimes tiring. However,
we have more fun at school.
Noon time belongs to us students. We usually feel relaxed and enjoyable. We can
take a walk on the playground unless it’s rainy. We can talk about anything we
are interested in and discuss it warmly. We enjoy talking about pop music, famous
actors or computer games online.
When we finish class work at school, sports time starts. How happy! It’s our world! You can see me almost anytime on the basketball court after school!
School life is full of fun, and I enjoy it very much!
（15）————珍爱水资源
Water is very important to us. We can’t live without water. But some people
don’t care about this. They often waste a lot of drinking water. They pour dirty
water into rivers or lakes, and they throw rubbish into them, too. So we have less
and less drinking water. At the same time, many rivers and lakes are seriously
polluted. So we must do something to stop the pollution. We must protect the
water and plant more trees. Oh, we should find ways to recycle water, too. If we
don’t pay much attention to water, the last drop of water will be our tear.
（16）————你去海南岛的计划
Dear Mike, I’m glad you’ll invite me to Hainan Island, which is indeed a
wonderful island with lots of places of interest. Thank you very much for your
invitation. In your letter you asked me to make some suggestions on how we two
are going there. In my opinion, we’d better first go to Guangzhou by train. I
think it is not only safe, but less expensive, though it takes me more time. After
visiting Guangzhou, we can take a ship to Hainan Island. It must be very
interesting. Just imagine how wonderful the sights at sea will be!
What’s your opinion about my suggestions? I’m looking forward to hearing
from you soon.
（17）————向朋友倾诉你的捆扰
I’m a Grade 9 student. These days I have a problem, and I don’t know how to deal with it.
I have a lot of homework every day and I have no choice but to do it. I often stay
up late to complete the exercises and then feel tired the next day. How I want to
relax myself !
Usually I accept so much homework, but sometimes I want to refuse to do it. I
hardly have any spare time for my hobbies. I really feel bad about that. I even
wonder whether it is worth working so hard.
What should I do ? Can you offer me some suggestions? They will be of great help
to me. I hope to hear from you soon. Best wishes!
早餐是很重要的
（18）Breakfast Is Important————
Breakfast is important. But not all the students have realized its importance.
Here’s the result of our survey. About 55 percent of the students have breakfast
regularly every day. They keep healthy and look active.25% of them just have junk
food instead. They don’t have a balanced diet. It is bad for their health. 20
percent（of the students）go to school without breakfast. As a result, these
students often feel hungry in class and can’t listen to teachers carefully. What
worse, they get ill easily.
It’s necessary / important (for us) to have breakfast and should also have the
right kinds of food for breakfast.
（19）————有关“你的理想职业”的班级调查
ideal
Recently we did a survey in our class in order to learn about students’
ideas.
jobs . Here’s a report about my group members’
Mary wants to be a fashion designer because she like beautiful clothes and is
good at drawing . Kate wants to be a gardener , she likes paints, she wants to
make the cities better. Mike would like to be a writer. He’d like to share his wonderful stories with others. Tom would like to be a cook. He’d like to cook delicious food for others. I would like to be a policemen. I want to protect the
people safe.
Hope everyone can realize their dreams in the future.
（20）————“说出你的烦恼”调查活动
Our school has made a survey-----＂Don’t keep your worries’’; Here are the
results.
About fifty percent of the students in our school are worried about their
homework. They have so much homework to do every day. And they feel stressed
too much. About thirty percent of the students with their parents are too strict
with them and in their studies. It’s difficult for them to get along/on well with their parents .The other twenty percent of them say they are weak in health. They
complain that they almost have no time for their hobbies or after-school
activities.
Dear teachers , would you please give us less homework and more time to relax
ourselves? Dear mom and dad, we want to take more exercise to keep fit / healthy
/ stay healthy. We will try / do our best to study our subjects and we also need
some time to do our own things.
（21）——————回顾三年初中生活，发表你的感言
I’m lucky to study in this beautiful school. The teachers are great. They always try
to make their lessons lively and interesting. The classmates are lovely and friendly.
The school life is rich and colorful ,They make me happy every day.
In the past three years, I am hardworking and have made great progress. I do well
in the exams. I am good at communicating and I like to make friends with others.
However, I have problems, I often chat on line and play computer games but
hardly do sports. I will spends less time online and do more sports to be stronger
from now on.
Thank you, my teachers and classmates. Wish my school more beautiful, my
teachers and classmates a happy life.
（22）————保持健康，从我做起
As we know, it is important for us to keep healthy and have a healthy life. How to
keep fit? First, we should eat healthy food, such as apples, vegetables and so on.
We mustn’t eat junk food, which is bad for our health. Second, doing sports is
necessary for us. We can run and play ball games. Last, it is useful for us to have a
good living habit. We should go to bed early and get up early. We must wash our
hands before meals. What’s more, we should brush our teeth twice a day. If you
do as I say I’m sure you will be healthier and healthier.
（23）————汽车给我们带来的快乐和烦恼
With more and more cars coming into our families, we are happy that it has
greatly improved our life. But unluckily, it has also brought many problems, such
as heavy traffic and traffic accidents.
Traffic safety is everybody’s business. We must obey the rules. For example, we
must walk on walk side. When we cross zebra-crossing, stop and look right and
left, then go across fast. Don’t play football on the road. We can tell our parents
not to drink before they drive. Don’t forget to tell them not to run through red
lights, talk or laugh while driving..
We can say cars are an important part in out daily life, it’s our duty to obey the traffic rules when driving on the roads and walking on sidewalks.
（24）————我不想变胖
Now more and more teenagers are overweighted. Why are so many students
overweighted?
Some students eat and drink too much and they like eating junk food. Some of
them like to lie on the sofa to watch TV or play computer games too much. They
seldom do sports. Some don’t have good living habits. They sleep too much or
stay up too late. As a result, they feel tired often and they may get ill easily.
As teenagers, we should have good living habits. Go to bed early and get up early.
We should eat more vegetables instead of junk food, everyone should try to do
sports at least one hour a day. If we can follow these rules, we can stay away from
overweight.
（25）———— 我们来谈谈电脑吧
As we know , computer is playing an important part in our daily life and it is more
and more popular among the young. But do you think computer is good or bad?
Here, I want to share my ideas with you.
Like everything else, computer has two sides. On the one hand , it can open our
eyes , we can
get much information from the Internet and we can learn English from it . What
more, we can shop on line without leaving home. When we get tired , we can play
computer games and listen to music to relax ourselves .By the way, maybe you
like traveling , but you don’t have enough money . Please don’t worry about it , the Internet can help you .You can visit all of the great places of interest on line
but don’t need to spend any money. Oh, how useful computer is!
But on the other hand , computer may influence our studies and our health, we
know more and more students, especially teenagerstudents are crazy about
computer games, they waste too much time on them. I am sorry that they have
lost interest in their studies. It’s reported some students have learnt bad things
from the Internet and even some students have been treated on line . How
terrible!
So maybe we can say whether computer is good or not depends on ourselves. So
when we search the Internet we should make good and careful choices, of course,
we should use it at a proper time ! Do you agree with me?
（26）————我的梦
（Good afternoon, dear teachers and students. Today I am going to talk about
my dream ）
Everyone has a wonderful dream and we work hard to achieve it. I have one nice
dream like you. Would you mind my telling it to you?
When I was very young , I was interested in drawing. From then on , I have been
dreaming of being an artist. As time goes by , I am more and more interested in
drawing . now I often draw in my spare time, I can always find a lot of fun in
drawing. When I am tired , drawing can make me relaxed; When I am unhappy ,
drawing can help me forget the sad things and make me happy again . It’s just like my best friend.
If I become an artist, I will be able to make much money, so I can help the poor
people, especially the poor children. I will help them get a good education like
others. It’s really a good job. Do you think so?
I clearly know I have a long way to go. But I will never give up, as the saying goes,
“Nothing is difficult if you put your heart into it.”．
I am sure you also have a good dream. Let’s study hard together to make our
dreams come true, shall we? Let’s go for it!
（27）————再谈我的梦
As the saying goes, “Great dreams make a bright future.”. I have a nice dream like you all. Do you want to know what my dream is? Let me tell you , I want to be
a teacher when I grow up .
As a student, I admire teachers very much. In my eyes, teachers are great and they
do a very useful job to people. I want to be a teacher and I will try my best to
make it come true. To make it, I think I should learn every subject well now and
improve myself as much as possible. If I become a teacher, I will be friendly to all
my students and I will be patient with them. Whenever they need my help , I will
be glad to help them . I want to be a good teacher like Miss Wang --- my English
teacher , she is our teacher as well as our friend, I like her very much .
Teachers, you are my sunshine!
To be a successful teacher is my dream, I hope my dream can come true, please
believe me and support me. Thank you all!
（28）————我的假期计划
How time flies! The summer vacation is coming soon . What are you going to do
during the long time? I think everyone wants to have a wonderful vacation. So we
should make a good plan at first. Have you made one? Maybe no, but I have, now
please listen to me .
After the final exams, we will have a two—month holiday. To improve my English , I want to take an English training class, because my English is not very good . but I
like it very much and I dreamof studying in a foreign country . So learning English
is an important part of my plan . Of course, I will have a good relax. I like
swimming , I am going to swim in the morning every morning . It can help me
keep healthy. If possible , I hope I can find a part—time job in the afternoon and make some money, so I can buy some school things with my own money , that
must be a special experience for me. You know I have never done a part—time jo before. I nearly forget to tell you , I will listen to music and watch TV in the
evening.
Do you know another important thing in my plan? Oh, I will go bike riding with
my best friend on Sundays. I am sure my vacation will be very interesting and
meaningful. Would you like to join me? I can’t wait
（29）-------动物是人类的朋友
As we know, animal are human's friends, many animals can bring us happiness
and make us feel less lonely. However, do you know more and more animals are
endangered? And even some of them are being killed for meat and skins, how
terrible!
So we must do something to stop people from catching them or killing them. But
what can we do ?
As students, I think we can hand out some posters about how to protect animals
and tell them how helpful animals are to us! Don't forget to help the homeless
pets and we should be friendly to the animals when we visit the zoo. We can call
the police if we find someone catch or kill animals. Because we know “if there is
no buying or selling, there will be no killing.”
Yes, we should also tell the public the importance of keeping the balance of nature.
Please love and protect animals!
写作技巧 一、了解高分作文的特点 要想作文获得高分，必须了解高分作文具有的特点，才有助于我们朝之而努力。高分作文一般具有以下特点： 1、书写工整，书面整洁，很少有涂改痕迹。 2、分段合理。全文分段一般不止一个自然段，让阅卷老师很容易就能找到作文所要求写的要点和重要句子。 3、要点齐全，不缺要点。 4、首尾呼应，自然成一体。 5、使用了大量的高级词汇和句型。阅卷老师一看就知道这个同学的功底非不一般，自然就给打高分了。 6、开头言简意赅，不啰嗦，不偏题，迅速引入主题。 7、段与段之间，自然过渡。有合适的连接词。 8、句与句之间，有恰当的连接词，使之自然成一体。 9、全文中同一个意思，基本没有重复使用某一个词、短语或者句型等，说明这个同学的词汇量不同寻常。老师自然就对该作文有好感了。 10、能够恰当使用谚语、格言等给文章添彩。 二、勤积累，巧准备 要想作文得高分，除了了解以上的特点外，还要在平时的学习中注意一下方面： 1、牢记课标词汇是基础 一篇作文多数是由积极词汇写出来的，这些词汇主要来源于课标。因此，牢记课标词汇是写好作文的基础。 2、掌握课标词汇和短语的用法 要想作文不扣分或者少扣分，有个要作文的语病少。怎么能够减少语病呢？这就要求我们在平时的学习过程中反复通过练习，掌握课标词汇和短语等的用法。例如，对于as soon as 、stop some body from doing something 、other 、another等的用法很多学生就经常出错。 3、高度重视同一个意思的多种表达方式 高分作文有个特点是：让老师发现你拥有丰富的词汇量，你的水平高人一筹。这由何而来？靠我们在平时学习过程中，逐步积累起来的。比如：今年的中考作文，谈的就是帮助他人的问题。同一个意思“帮助”，假如你就用一个动词“help”，岂不显得你词汇贫乏？假如你在作文中不断地变换方式，用help、give somebody a hand、 give a hand to somebody 、be in need of 等以表达“帮助”同一个意思，岂不更好呢？ 像这样的例子很多，比如：大家都觉得很简单又很基础的“表示的方式”就有：My name is Jim. I’m Jim. I’m called/named Jim. I’m a boy called /named /with the name of Jim. 等等。 表达年龄的方式有：She is 12. She is 12 years old. She is aged 12. She is a girl of 12(years old) . She is a girl aged 12.等等。 很显然，使用高级一点的更好。 4、加强练习，积累经验 学习语言最好的方法是运用，作文也不例外。我们要想作文得高分，必须经常练习，才能提高水平。 5、充分利用作文文 很多资料书上都有作文文。诚然，他们有很多值得借鉴的地方。 我们怎么利用它们呢？首先，我们先不要看文章，自己先思考一下：假如你来写，你会怎么去写，会用到哪些词或者句子等。然后去比较，勾出其中的好词佳句，并且把它摘录在专门的作文册子上。供写作时选用。 另外，背一些文也是很有必要的。 6、背诵一些谚语和警句 作文中如果出现恰当的谚语和警句，会有锦上添花的效果。 三、精心审题，沉着写初稿 很多同学看到作文后，下笔就写。这是不对的。一则很容易写偏题、写出病句，涂改后书面又不整洁，影响得分。 其实，会写作文的同学都知道，审题非常的重要，可以防止很多毛病，提高得分。那么我们审题要做些什么呢？
最新2018上海中考英语作文范文预测 2018上海中考英语作文篇1 世界在发展，文化在交融，英语已经成为人们沟通的桥梁。怎样学好英语是我们一直在探索的问题。几年的学习经历你一定积累了许多成功的经验，请从听、说、读、写四方面谈谈你的建议。 要求：1. 词数：80—100词(开头已给出，不计入总词数) 2. 字迹工整，语言流畅，表达正确，逻辑清晰。 如何学好英语 How to learn English well English is important and useful to us. How can we learn it well? Here are my suggestions。 First, we should often listen to the tapes, English songs and programs. Watching English movies is also helpful to us. Second, we should speak English in class as much as possible.
Don't be afraid of making mistakes. The more you speak, the fewer mistakes you'll make. We'd better join the English club and practice with others. Third, we can read more English newspapers and magazines. It's good for us. At last, we should recite some good passages and keep diaries。 In a word, as long as we do more listening, speaking, reading and writing, we will learn English well。 2018上海中考英语作文篇2 近年来我国的发展世人瞩目，中国的传统文化正越来越受到各国朋友的关注。请根据提示，以"The Spring Festival"为题写一篇短文，向外国朋友介绍我国的春节。 要求：1、字迹工整，规范; 2、80词左右; 3、根据所给要点及参考词汇，可适当发挥。
中考必背英语作文20篇 为了交流学习经验，提高学习效率，《中学生英语辅导报》举行了一次以How to be a good learner?为题的征文比赛活动，请写一篇80词左右的短文谈谈你的看法。 【优秀满分范文】 How to be a good learner? As a good learner, we should have good habits and ways of learning. We need to get ready for our lessons before class and always listen carefully in class. It’s good to study in groups and help each other. We should do more reading in our free time. If we have some problems, we’d better ask others for help. As a student, working hard is important, but don’t forget t o do sports and keep healthy. I think all these above will be helpful to us. 2 亲爱的同学，你的初中学习生活马上就要结束了，请你以“My English Study”为题，谈一下三年以来学习英语的心得体会。 要求：1.要点包括你在英语学习中所遇到的困难、解决的方法以及学习感悟；2.词数80左右。 【优秀满分范文】 My English Study How time flies! My three-year middle school life will be over soon. Looking back, I have many memories of my English study. When I entered the middle school, I had so many difficulties with my English. I was not able to understand the teacher in class, and I couldn’t master the wor ds and phrases. For a time I wanted to give it up. Later, with the help of the teacher and my classmates, I listened to the teacher carefully in class, kept on reading English every day and spoke as much as possible. Step by step I made great progress in English. In a word, only when you develop interest in studying English can you learn it well. 3 父亲节马上就要到了，但是有些同学不知道送什么礼物给父亲。请根据下面的提示进行适当扩展，并向同学们提出一些建议。80词左右，开头和结尾以给出（不计入总词数）。 提示：1.如果有足够的零花钱，可以为父亲买一些使用单不贵的东西，如领带等： 2.还可以为父亲做些力所能及的事情（do something that you can do）,如为父亲准备一杯茶等他下班后饮用等。 【优秀满分范文】 Father’s Day is coming and you must be thinking of giving a present to your father. Different people like different kinds of gifts. If you have enough pocket money, you can buy a useful but not expensive thing, like a tie. I think your father will like it. But if you don’t have enough pocket money, you can do something that you can do, for example, you can prepare a cup of tea. When your father comes back from work, he can drink it. No matter what you do, the most important thing is to make your father happy on Father’s Day. Don’t you think so? 4
1 中考英语作文必背十篇经典范文 2 中考英语作文必背经典范文一《How to learn English well？》As we know , 3 English has become an international language. It is more popular than 4 any other language in China . English is widely spoken in the world and 5 it is the most useful language around the world . But how to learn it 6 well ? The best way is to use it all the time . If we can talk in English , 7 think in English we can learn it well . At school , we should learn to 8 hear , speak, read and write carefully . We should spend enough time in 9 practicing English . If we keep on working hard at English , we will be 10 able to be good at it one day . 11 中考英语作文必背经典范文二《Plans For the Summer Holiday 》 The 12 summer holiday is coming. I'm going to have a good rest and learn to relax 13 myself. I will read more books， because reading can not only make 14 me clever,but also make me get more knowledge. What’s more,I will try 15 to spend more time chatting with my parents and help them to do some 16 housework. I am going to take part in social activities so that I can 17 know more about the society. If possible, I'd like to go to visit Shanghai . 18 I'm sure I'll have an interesting and meaningful summer holiday 19 .中考英语作文必背经典范文三
生物强化技术2020 目前，污水处理领域生物技术的应用研究，主要集中在优势菌种的筛选、驯化、纯化等传统的微生物工程技术方面。 一、生物强化技术的原理 1、生物强化技术(Bio-augmentation)，发端于20世纪70年代中期，80年代以后逐步得到关注、研究和应用。该技术的基本原理是，为了提高生物降解反应器或原体系中微生物的降解能力，通过投加外源微生物或营养调节成分来保持、强化反应器中微生物的活性，从而提高生物降解效果。生物强化技术所利用的微生物可以来源于原有的生物降解体系，经过驯化、富集、筛选、培养获得：也可能是原来生物降解体系中不存在的微生物。 通过投加外源微生物对有机物的降解作用，包括微生物的直接降解作用和微生物的共代谢作用。 直接降解作用：通过投加能够降解目标污染物的微生物，提升生物反应器中生物降解活性，微生物以污染物为碳源或能源，实现对污染物的直接降解。 共代谢作用：有些污染物质，微生物不能直接以其碳源和能源生长，但在其它基质存在的条件下，能促进其降解。共代谢过程主要通过不同类型的微生物相互协作降解污染物质，在生物降解过程中有着极其重要的作用。 2、采用生物强化技术，实现对污染物的直接降解作用和共代谢作用，前提是获得功能性降解微生物或者微生物菌群。获取具有降解功能的微生物或菌群主要途径有：1、通过长时间驯化，获得具有一定降解能力的菌株或菌群；2、从特定的环境中分离纯化、获得某些具有特定降解能力的微生物菌株； 3、通过基因工程技术改造微生物，使其获得或增强特定降解能力。 3、从本质意义上讲，在生产中投入活性污泥也属于生物强化技术。但对于污水中含有难生物降解或毒性强的污染物，则需要经过长期驯化，尤其是自然的筛选和淘汰过程，才能逐步在反应器中建立生物降解菌群，实现生物降解过程。
中考英语作文 写人叙事类 常用句型 开头句 1、The person who has influenced me most is...对我影响最大的人是····· 2、A true friend is a person who can let you feel warm when you are depressed. 一个真正的朋友是会在你失落沮丧的时候给你温暖的人。 3、I have never expressed my thanks and respect to... 我从未对······表达过我的谢意和敬意。 4、For a long time,there was one thing that I would never forget. 很久以来，一直有一件事情令我难以忘怀。 5、The experience left a deep impression on me. 这次体验给我留下了深刻的印象。 中间句 1、She has watery eyes and a lovely baby face. 她有着水汪汪的眼睛和可爱的娃娃脸。 2、He is of medium build but has a powerful body. 他虽然是中等身材，但有着强健的体魄。 3、He is a boy full of integrity and honesty. 他是一个充满正直诚实品质的男孩。 4、I am a positive person and never lose heart. 我是一个积极乐观，从不轻易放弃的人。 5、As long as he makes a promise,he will never break it. 只要他做出了承诺，就决不食言。 6、She always does a favor to someone who is in trouble. 她经常帮助那些有困难的人。 7、In my opinion,friends are the persons whom we can share happiness and sorrow with. 在我看来，朋友是我们可以分享快乐和悲伤的人。 8、When I think of this matter,I feel very lucky. 当我想到这个问题时，我觉得非常幸运。 结尾句 1、Thank you for everything you have done for me. 感谢您为我所做的一切。 2、I am proud of her,and I love my mother very much. 我以她为豪，而且我非常爱我的母亲。 3、It will be one of my unforgettable experiences in my life.
今天北京中考在线小编分享给大家20篇英语范文，涵盖了初中三年涉及到的所有英语写作话题，会为你的英语写作提供清晰的思路和丰富的素材，多看、多记、多思，2017中考英语考场上你一定能够像这些小作者一样，写出优秀满分英语作文的！ （一） 为了交流学习经验，提高学习效率，《中学生英语辅导报》举行了一次以How to be a good learner？为题的征文比赛活动，请写一篇80词左右的短文谈谈你的看法。 [优秀满分范文] How to be a good learner？ As a good learner，we should have good habits and ways of learning。 We need to get ready for our lessons before class and always listen carefully in class。It’s good to study in groups and help each other。We should do more reading in our free time。If we have some problems，we’d better ask others for help。As a student，working hard is important，but don’t forget to do sports and keep healthy。 I think all these above will be helpful to us。 （二） 亲爱的同学，你的初中学习生活马上就要结束了，请你以“My English Study”为题，谈一下三年以来学习英语的心得体会。 要求：1。要点包括你在英语学习中所遇到的困难、解决的方法以及学习感悟；2。词数80左右。 [优秀满分范文] My English Study How time flies！My three-year middle school life will be over soon。Looking back，I have many memories of my English study。 When I entered the middle school，I had so many difficulties with my English。I was not able to understand the teacher in class，and I couldn’t master the words and phrases。For a time I wanted to give it up。Later，with the help of the teacher and my classmates，I listened to the teacher carefully in class，kept on reading English every day and spoke as much as possible。Step by step I made great progress in English。 In a word，only when you develop interest in studying English can you learn it well。
污水治理生物强化技术 在工业化不断发展的背景下，经济水平也在不断的提高，与此同时污染的问题亟待解决，其中的水污染也成为人们越来越关注的话题。在运用传统化学处理方法对水污染进行处理的过程中，很难保证降低污染的实效性，但是通过应用生物强化技术，出现了明显的效果。在应用生物强化技术对水污染进行治理的过程中运用生物的手段投菌、配菌，然后制成相对应的强化菌类，通过微生物，对污水中的富营养化物质进行消耗，从而可以对受到污染的水体进行净化。 1 生物强化技术简介及来源 1.1 生物强化技术简介 对于生物强化技术来说，是属于一种新型的生物技术，并且应用治理水污染的效果比较明显，在应用废水污染治理的过程中，其原理为可以通过对相应具有特殊功能菌种的配置，在这些特殊的菌种中，具备被强化的新陈代谢的能力，在投放于水源当中，可以运用微生物本身的新陈代谢的能力，对污水中污染分子进行分解，同时对于具有污染性质的有机物来说，可以转化为无污染的无机物从而可以实现污水的净化。在应用生物强化技术对水污染进行治理的过程中，主要的作用包括了以下几个方面： (1)直接作用：对于污染水体中的污染源来说，水体当中的有机物分子可以进行直接的处理降解，从而可以对水质进行净化，降低水污染的程度。 (2)共同代谢作用：在应用生物强化技术的过程中，通过运用微生物的新陈代谢作用，可以采取共同代谢的方式，对污染中的污染结构进行改变，充分发挥生物强化技术降解治理污水的作用。 (3)基因水平转移作用：在应用生物强化技术的过程中，可以对具有特定代谢基因的微生物与自然基因的代谢途径进行交换，这样在基因水平中，可以实现转移交换的作用，一定程度上提高生物体降低水污染的有效性。 1.2 生物强化菌剂的来源 1.2.1 在自然界中筛选菌种 在自然界中对菌种进行筛选的过程中，需要对环境因素进行充分思考，例如，水和土壤，然后进行分离筛选工作，得到具备特殊降解性的菌株，保证选择菌株的高效性，
最新中考英语作文必备金句 状语从句 A)如果你不……，你就会……If you dont …，youll … 例︰If you dont keep working hard, youll lose the chance。 如果你不坚持努力工作，你就会失去这次机会。 B) 如此……，以至于……so …that … 例：At that moment, I was so upset that I wanted to give up。 当时，我非常伤心，最后都想放弃了。 C) 每当我听到……我就忍不住感到兴奋。Whenever I hear …，I cannot but feel excited。
每当我做……我就忍不住感到悲伤。Whenever I do …，I cannot but feel sad。 每当我想到……我就忍不住感到紧张。Whenever I think of …，I cannot but feel nervous。 每当我遭遇……我就忍不住感到害怕。Whenever I meet with …，I cannot but feel frightened。 每当我看到……我就忍不住感到惊讶。Whenever I see …，I cannot but feel surprised。 例：Whenever I think of the clean brook near my home, I cannot but feel sad。 = Every time I think of the clean brook near my home, I cannot help feeling sad。 每当我想到我家附近那一条清澈的小溪我就忍不住感到悲伤。 宾语从句
中考英语作文必背十篇经典范文 中考英语作文必背经典范文一How to learn English well？As we know , English has become an international language. It is more popular than any other language in China . English is widely spoken in the world and it is the most useful language around the world . But how to learn it well ? The best way is to use it all the time . If we can talk in English , think in English we can learn it well . At school , we should learn to hear , speak, read and write carefully . We should spend enough time in practicing English . If we keep on working hard at English , we will be able to be good at it one day . 中考英语作文必背经典范文二Plans For the Summer Holiday The summer holiday is coming. I’m going to have a good rest and learn torelax myself.I will read more books，because reading can not only make me clever,but also make me get more knowledge. What’smore,I will try to spend more time chatting with my parents and helpthem to do some housework. I am going to take part in socialactivities so that I can know more about t he society. If possible, I’dlike to go to visit Shanghai. I’m sure I’ll have an interesting and meaningful summer holiday .中考英语作文必背经典范文三Great changes in my hometown More than twenty years ago, my hometown was just a small , old and poor town. Most of people were farmers. There were few factories. The
最新中考英语作文写作素材积累及必背范文大全 专题1 一、专题知识梳理 “主题阐述型”作文是未来中考的趋势 纵观最近两年的中考和一模二模等大考中的作文题目，不难发现“主题阐述型作文”正无越来越受到出题人的青睐。无论对于复习临考的初三生还是其他年级的同学，了解趋势，未雨绸缪，早作准备，有的放矢，才是 征服“作文”这一最中考英语考试最高峰的王道吧。 所谓“主题阐述型”作文，学生需要结合题目中给出的具体情景或数据来展开写作。学生在写作时既不能泛泛 而谈，也不能举出不相干的事例。这样的作文一般写作思路是： 1首段先将题目中的情景简要总结并引出自己的观点； 2中间段要给出详细展开自己观点，同时要辅以契合的数据，事实等作为论据； 3尾段呼应开头点题。 因此这样的作文都是夹叙夹议类的文章，可以一箭双雕考察学生两种体裁写作能力。更重要的是和具体情景 的结合，也需要现场功力，绝非靠机械式地套用模板可行，这样也更好地考察学生真实的写作功底。 所以平时我们应该如何准备呢？ 1 建立自己的素材库。平时各种话题写过的作文（作文话题分类另见博文），牛人的范文，参考书上经典，其 中的优美词句，典型事例等等用心记下来，且一定要用笔记录。自己动手写才能走心，才能内化成自己的东 西。 2 关注周围的世界。很多主题阐释性的作文都是和实事挂钩的，如果你平时就做个有心人，关注周遭的世 界，了解一些基本概念的英文，如雾霾（haze/ smog）,智能手机（smartphone），失联客机（disappeared airliner）… 在考场上就能更从容，不至于现场词穷，甚至看不懂题目。 3 养成在头脑中构建语段的习惯。看到一个新闻或现象，不要当成事不关己的窗外事，试着去评论或思考一 下，哪怕听听智者的言论，也能受到启发。很多时候，大家写文章，徒有文字的堆砌，也用了很多从句，但 绕来绕去就是一个肤浅的意思，归根还是没有更深的思考和总结。当然中考的作文话题不会太大，不指望一
生物强化技术--废水处理 1 生物强化技术的提出 随着现代合成工业的发展，大量异生化合物(Xenobiotics)进入了工业废水和城市污水中，由于其本身具有结构复杂性和生物陌生性，因此很难在短时间内被常规生物处理系 统中的微生物分解氧化。为了解决难降解有机废水的处理问题，国外学者提出了生物强化技术(Bioaugmentation)的概念。生物强化技术是指在生物处理系统中，通过投加具有特定功能的微生物、营养物或基质类似物，达到提高废水处理效果的手段和方法。 2 作用机制 2.1高效菌种的直接作用 这种作用机制首先需要通过驯化、筛选、诱变和基因重组等生物技术手段得到1株以目标降解物质为主要碳源和能源的高效微生物菌种，再经培养繁殖后，投放到具有目标降解物质的废水处理系统中。因此，当原处理系统中不含高效菌种时，如果投入一定量的高效菌种，则可有针对性地去除废水中的目标降解物；当原处理系统中只存在少量高效菌种时，那么投加高效菌种后，可大大缩短微生物驯化所需要的时间。在水力停留时间不变的情况下，能达到较好的去除效果。 2.2 微生物的共代谢作用 所谓微生物的共代谢作用是指只有在初级能源物质存在时，才能进行的有机化物的生物降解过程。共代谢过程不仅包括微生物在正常生长代谢过程中对非生长基质的共同氧化，而且也包括了休止细胞(resting cells)对不可利用基质的氧化代谢。微生物的共代谢作用可分为：①以易降解的有机物为碳源和能源，提高共代谢菌的生理活性；②以目标污染物的降解产物、前体作为酶的诱导物，提高酶的合成；③不同微生物之间的协同作用。 共代谢虽然能提高难降解有机物的去除效果，但机理十分复杂，迄今有很多问题尚处于研究阶段。一些学者曾针对共代谢现象提出了各种假设。Foster认为微生物不能在某种基质上生长的原因并不是由于微生物无法分解代谢该物质，而是由于微生物本身缺乏吸收、同化其氧化产物的能力。Hughes提出卤代芳烃化合物的共代谢可能是由于微生物无法从苯环上脱去卤素取代基，并把芳香环基质导向碳吸收同化的节点。Tranter和Cain 把具有氧化代谢卤代芳烃化合物功能的细菌不能在该基质上生长的原因归结于有毒产物的积累。但目前提出的各种假设都不能圆满地解释实际工程中所发生的各种共代谢现象。 许多难降解有机物的去除是通过共代谢途径进行的。例如在氧化塘处理焦化废水的系统中，投加生活污水可大大提高COD的去除率，其主要原因就是生活污水中含有多种营养元素，加强了生物的共代谢作用。瞿福平等在对氯代芳香烃化合物的研究中发现，氯苯类同系物共存时，对氯苯的生物降解性有一定程度的影响。邻二氯苯，间二氯苯的共存有利于整个体系的降解，但氯苯的耗氧速率有所降低。Adriaens等研究发现，一株Acinetbacter sp.生长在含有4-氯苯甲酸盐(4CB)的基质上时，可以将原来不能利用的3,4-二氯苯甲酸盐(3,4-DCB)转化成3-氯-4-羟基苯甲酸盐，毫无疑问共代谢在其中发挥了重要的作用。 3 实施途径 3.1投加高效降解微生物 该技术得以实施的前提是获得能作用于目标降解物的高效菌株，从理论上讲，对于天
背熟这20篇范文-2017中考英语作文轻松得满分
背熟这20篇范文 2017中考英语作文轻松得满分这20篇英语范文涵盖了初中三年涉及到的所有英语写作话题，包括学习、健康、网络、生活、环保、礼仪等，会为你的英语写作提供清晰的思路和丰富的素材，多看、多记、多思，2017中考英语考场上你一定能够像这些小作者一样，写出优秀满分英语作文的！ （一）为了交流学习经验，提高学习效率，《中学生英语辅导报》举行了一次以How to be a good learner？为题的征文比赛活动，请写一篇80词左右的短文谈谈你的看法。 [优秀满分范文] How to be a good learner？ As a good learner， we should have good habits and ways of learning。 We need to get ready for our lessons before class and always listen carefully in class。It’s good to study in groups and help each other。 We should do more reading in our free time。If we have some problems，we’d better ask others for help。 As a student， working hard is important，but don’t forget to do sports and keep healthy。 I think all these above will be helpful to us。 （二）亲爱的同学，你的初中学习生活马上就要结束了，请你以“My English Study”为题，谈一下三年以来学习英语的心得体会。 要求：1。要点包括你在英语学习中所遇到的困难、解决的方法以及学习感悟；2。词数80左右。 [优秀满分范文] My English Study How time flies！ My three-year middle school life will be over soon。 Looking back， I have many memories of my English study。
生物强化技术处理石油生物强化技术处理石油化工化工化工废碱液废碱液 和高浓度废水 技术技术与应用与应用与应用介绍介绍 北京中盛泓源环境科技开发有限公司
目录 1. 公司简介 (1) 2. 生物强化技术原理 (1) 3. 技术特点 (2) 4. 应用领域 (3) 5. 生物强化技术处理应用业绩介绍 (3) 6. 生物强化技术的处理成本 (7)
1.公司简介 北京中盛泓源环境科技开发有限公司是注册于北京中关村科技园区的高新技术企业，前身是隶属于中国集装箱控股集团公司的北京中集泓源环保科技开发有限公司，公司以技术为先导，与韩国SK公司等国际知名企业合作，在石油、化工、制药等领域提供污水处理、有机废气治理等技术服务工作。 2.生物强化技术原理 利用经过筛选后的特效微生物菌群、配合特定的工艺参数和维持生物活性的生物催化剂,快速、经济地处理传统的活性污泥法无法处理的高浓度、含毒性废水的全新概念的生物前处理工艺。 生物强化处理工艺的流程和普通的活性污泥处理工艺在表现形式上基本相同。 生物强化处理工艺与传统生物处理工艺的不同之处在于使用了特效微生物菌群和维持菌群活性的生物催化剂，以及与传统工艺不同的工艺设计参数。 使用生物强化技术处理炼油碱渣和高浓度有机废液可以使大大缩短处理工艺流程和工程投资，该技术在常温、常压条件下实施，避免了焚烧法、催化氧化法等存在的潜在的危险因素，不但在投资和运行费用上具有绝对优势，而且是真正意义上的环保处理技术，没有转移污染物，不会带来二次污染。该技术区别于传统的高效生物菌种需
要反复投加、成本昂贵等特点，它是一次性植入特效微生物，无需重复投加，降低了废水处理成本。可以广泛应用在石化、染料、农药等高浓度废水处理中，处理负荷是普通生物处理工艺的10倍以上。可以处理普通生物法不能处理的有毒废水和高浓度废水，对废水中的污染物浓度、pH、含盐量等指标的变化有很强的适应能力。该技术比传统生物处理系统的启动时间大大缩短，在植入特效微生物2～3天后即可以实现正常运行，与传统启动时间1～2个月相比，为企业的正常生产赢得了时间，同时可以改善污泥沉淀性能，抑制污泥膨胀，增强系统抗冲击负荷的能力，提高废水处理系统运行的稳定性。 3.技术特点 （1）对污染物进行彻底的生物降解，没有污染物转移和二次污染； （2）结合传统活性污泥法，BAT系统流程短、投资低； （3）特殊的选育技术，保证均群不退化，使用过程中不需要反复投加，降低了运行成本； （4）独特的运行参数设计，使得系统处理负荷是传统方式的10倍以上，实现了处理高效性； （5）拥有自主知识产权的微生物强化技术，保证了微生物在高浓度、高盐分的恶劣环境下的活性，使生物法处理高浓度、毒性工业污水成为可能； （6）系统启动周期短，具有创新性的调试方法使得系统启动时间是传统方法的十分之一；
《2017中考必背的15篇中考英语作文》第一篇： [写作要求] 现在我们周围的环境污染越来越严重。作为一个中学生，我们应节约资源，保护环境,从我们身边的小事做起，做一个“低碳生活”的中学生。请以“MｙＬow--ｃａrbon Life”为题，写一篇短文描述自己的“低碳生活”。 内容包括： 1。地球的污染越来越严重,我们能看到森林被砍伐、水污染和空气污染。 2。你是怎样从身边小事做起,做到“低碳生活”的。如:每天步行上学、离开教室及时关灯和电扇、充分利用纸张、节约用水等。 ３。号召更多的人加入到“低碳生活”中来。 作文要求: 1。不能照抄原文;不得在作文中出现学校真实的名称和学生的真实姓名。 2。语句连贯,词数8０个左右。作文的题目已经给出，不计入总词数。 Ｍy Loｗ-－cａrbon Lifｅ The environmeｎtaｌｐolｌutｉon is ｗorｓe ａnd worｓe ｔｏｄay。 [优秀满分范文] Ｍy Low-ｃａrｂｏn Ｌiｆe Ｔhe enｖironｍental pｏllｕtiｏnｉs wｏｒｓe ａnd worse ｔｏdａｙ。Maｎｙtrees arｅcut down，and water and air aｒe pｏｌluted。As a student Ｉtry to have a low－ｃarboｎlifeｔo sa ｖeｅnｅrｇy and redｕce pollution。 Firｓtｌｙ，I ofｔen ｗａlk to ｓchｏｏl。It cａｎrｅduce aｉｒpｏllｕtｉｏn。Ｓecondｌy，I always turn off theｌightｓａnd ｆａns whｅｎleaving ｔhe ｃlaｓsｒoｏｍ。Thirdｌｙ,I alwａy ｓmake fulｌuｓｅｏf papeｒａnd ｏｔher schoolｔhinｇs ａｎd nevｅr wａsｔe ｗater。 I wish ｍorｅｓtudｅntsｔoｊoin me aｎｄmaｋe thｅeaｒth ｍore ａnd more bｅautiful。 第二篇: [写作要求] 每当朋友之间即将分手的时候，耳边常常会响起这首歌“朋友啊朋友!你可曾想起了我,如果你正享受幸福,请你忘记我……”。请你以Friends为题,写一篇90词左右的短文，可以围绕主题适当展开，阐述交友的重要性和好处。 ［优秀满分范文] Frienｄs Whaｔare friends? Ｗe often talk about the topic ｗiｔh ｏtheｒs。Ｉthink fｒiends are thｏｓe peoｐle who ｃaｎｈeｌp you wｈｅn ｙoｕare ｉn tｒｏuble。Ｄon’t fｏｒget theｓayiｎｇ, “A friend in nｅedｉs a friend ｉndeeｄ。” Ｆrieｎds can tｅll you yoｕr mｉsｔakes，thouｇh what