在复合句中修饰主句或主句中的某一成分的从句
叫状语从句。状语从句通常由从属连词或起连词作用的词组引导，有时甚至不需要连词直接和主句连接起来。状语从句根据它表达的意思不同，可分为时间、地点、原因、目的、结果、条件、方式、比较、让步等九类。
一、时间状语从句
时间状语从句是表示时间关系的从句。可以引导时间状语从句的连词很多，根据意义和主从句之间的时间关系，通常可分为以下几种情况：A．when, while, as, whenever
when, while, as表示主句谓语作和从句的谓语动作同时发生或几乎同时发生。
1．when
①when表示点时间时，从句中用短暂性动词；表
示段时间时，用持续性动词。
When I got home, my family were already having dinner.
我到家的时候，全家已在吃晚饭。
（when表示点时间）
When they were still talking and laughing, the
teacher came in.
表示段when（当他们还在说笑的时候，老师进来了。时间）
He waved a hello when he saw her.
当他看见她的时候，就挥手打了个招呼。（when
表示点时间）
When you think you know nothing, you begin to know something.
当你认为自己一无所知的时候，就开始知道一些事情了。（when表示段时间）
注意：
当when意思是正当……时候（and at that moment）时，when只能跟在前一分句之后。
He was about to go to bed when the doorbel rang.
他正要上床，忽然门铃响了。
They were watching the World Cup when suddenly the lights went out.
他们正看着世界杯比赛，突然灯灭了。
They had just arrived home when it began to rain.
他们刚到家，天就开始下雨了。
②有时when表示虽然，尽管的含义，相当于although或since。
He walks when he might take a taxi.
尽管可以打的，但他还是步行。
How can you hope for mercy yourself when you show
none
既然你不宽恕别人，你自己又怎能希望得到别人
的宽恕呢？
2．while
①while通常表示一段时间，从句中宜用持续性动
词作谓语。
Strike while the iron is hot.
趁热打铁。
She fell asleep while she was reading the newspaper.
她在看报的时候睡着了。
②while有时可以作并列连词，表示对比，可译成……而……。
I am fond of English while he likes maths. 我喜欢英语而他却喜欢数学。
We slept while the captain kept watch.
我们睡觉而上尉担任警戒。
③while有时可引导让步状语从句，意思是虽然。While they love te children, they are strict with
them.
虽然他们都爱他们的孩子，但却对他们要求严格。提示：
虽然during 与 while 意思很相近，但是during
是介词，不能引导从句。
3．as
①as表示点时间时，从句中用短暂性动词；表示段
时间时，用持续性动词。as和when两者经常可以
通用。
The thief was caught as when he was stealing
in
the supermarket.
小偷在超市行窃时被逮住了。
I saw Jim as when he left the meeting room. 吉姆离开会议室时候我看到了他。
②as表示一边……一边……，强调从句和主句中
两个动作交替进行或同步进行。
They talked as they walked.
他们边走边聊。
He looked behind from time to time as he went. 他一边走，一边不时地往后看。
③as表示随着
As time goes on, it's getting warmer and warmer.
随着时间的推移，天气变得越来越暖了。
As spring warms the earth, al flowers begin to
bloom.
随着春回大地，百花开始绽放。
4．when, while, as的用法区别
①只有当从句表示的是段时间，即其谓语动词有
持续性特征时，这三者可以通用互换。
I got the news on the radio when while as I was
having breakfast.
我在吃早饭的时候从收音机里获悉这一消息。
②在下列情况下，三者彼此之间不能替换使用：
a．as更强调同一时间或紧接的一前一后或伴随
着的变化。
We listened to the singer sing as he played the
guitar.
我们听着歌星边弹吉它边演唱。
I thought of it just as you opened your mouth. 你一张嘴我就知道你要说什幺
As he grew older, he became less and less active
随着他年龄的增长，他变得越来越不活泼了。
提示：
状语从句可放在主句之前或之后，放在主句之前
时一般用逗号与主句分开。有时可置于主句中间，
前后用．
逗号。
b．when更强调特定时间，还可表示从句中的动
作先于或后于主句的动作。
When I had given Mary the spare ticket, I found my own already gone.
当我把多余的票给了玛丽时，我才发现我自己的票
已不知去向。（从句动作发生在主句之前，注意主
从句的时态）
When I finally got there, he meeting had been
on for ten minutes.
当我最终赶到那里时，会议已开始十分钟了。（从
句动作发生在主句之后，注意时态） c．while
从句只能表示延续的动作或状态或主从句中动作
的对比。
She thought I was talking about her daughter, while in fact, I was talking about my daughter.
她以为我在谈论她女儿，而事实上，我在谈论我的
女儿。
d．若表示两个短促动作几乎同时发生时，用as
场合多于when。
As he finished his speech, the audience burst into
applause.
他结束讲话时，观众爆发出雷鸣般的掌声。
5．whenever whenever是when的强势语，它描
述的不是一次性动作，而是经常发生的习惯性动作。 You are always welcome whenever you come. 无论你何时来都欢迎。
Whenever we met with diffiulties, they came to help us.
初二英语语法总结 1) leave的用法 1.“leave+地点”表示“离开某地”。例如： When did you leave Shanghai? 你什么时候离开上海的？ 2.“leave for+地点”表示“动身去某地”。例如： Next Friday, Alice is leaving for London. 下周五，爱丽斯要去伦敦了。 3.“leave+地点+for+地点”表示“离开某地去某地”。例如： Why are you leaving Shanghai for Beijing? 你为什么要离开上海去北京？ 2) 情态动词should“应该”学会使用 should作为情态动词用，常常表示意外、惊奇、不能理解等，有“竟会”的意思，例如：How should I know? 我怎么知道？ Why should you be so late today? 你今天为什么来得这么晚？ should有时表示应当做或发生的事，例如： We should help each other.我们应当互相帮助。 我们在使用时要注意以下几点： 1. 用于表示“应该”或“不应该”的概念。此时常指长辈教导或责备晚辈。例如： You should be here with clean hands. 你应该把手洗干净了再来。 2. 用于提出意见劝导别人。例如： You should go to the doctor if you feel ill. 如果你感觉不舒服，你最好去看医生。 3. 用于表示可能性。should的这一用法是考试中常常出现的考点之一。例如： We should arrive by supper time. 我们在晚饭前就能到了。 She should be here any moment. 她随时都可能来。 3) What...? 与 Which...? 1. what 与 which 都是疑问代词，都可以指人或事物，但是what仅用来询问职业。如：What is your father? 你父亲是干什么的？ 该句相当于： What does your father do?
初一英语语法及主要知 识点归纳总结 Pleasure Group Office【T985AB-B866SYT-B182C-BS682T-STT18】
初一英语知识点归纳总结 分类：英语学习 Unit 1 Where’s your pen pal from 一．短语： 1 ．be from = come from 来自于---- 2． live in 居住在--- 3． on weekends 在周末 4 ．write to sb = write a letter to sb 给某人写信；写信给某人 5 ．in the world 在世界上 in China 在中国 6．pen pal 笔友 14 years old 14岁 favorite subject 最喜欢的科目 7．the United States 美国 the United Kingdom 英国 New York 纽约 8．speak English 讲英语 like and dislike 爱憎 9．go to the movies 去看电影 play sports 做运动 二．重点句式： 1 Where’s your pen pal from = Where does your pen pal from/ 2 Where does he live 3 What language(s) does he speak 4 I want a pen pal in China. 5 I can speak English and a little French. 6 Please write and tell me about yourself. 7 Can you write to me soon 8 I like going to the movies with my friends and playing sports. 三．本单元的国家，人民、语言对应。 1 Canada---- Canadian---- English / French 2 France------ French------French 3 Japan------Japanese----Japanese 4 Australia----Australian----- English 5 the United States------ American---- English 6 the United Kingdom---British----- Enghish Unit 2 Where’s the post office 一． Asking ways: (问路) 1．Where is (the nearest) …… （最近的）……在哪里 2．Can you tell me the way to …… 你能告诉我去……的路吗 3．How can I get to …… 我怎样到达……呢 4．Is there …… near here / in the neighborhood 附近有……吗 5．Which is the way to …… 哪条是去……的路 二．Showing the ways: （指路） 1. Go straight down / along this street. 沿着这条街一直走。 2. Turn left at the second turning. 在第二个路口向左转。 3. You will find it on your right. 你会在你右手边发现它。 4. It is about one hundred metres from here. 离这里大约一百米远。 5. You’d better take a bus. 你最好坐公交车去。（You’d better+动词原形）
1. Tim is in good shape physically he doesn't get much exercise. A. if B. even though C. unless D. as long as 2. The school rules state that no child shall be allowed out of the school during the day, ______ accompanied by an adult. A. once B. when C. if D. unless 3. you may have, you should gather your courage to face the challenge. A. However a serious problem B. What a serious problem C. However serious a problem D. What serious a problem of the heavy traffic，it was already time for lunch break she got to her office． A．since B．that C．when D．until* m John thinks it won’t be long he is ready for his new job. A. when B. after C. before D. since 6. Today, we will begin ________we stopped yesterday so that no point will be left out. A. when B. where C. how D. what 7. She had just finished her homework her mother asked her to practice playing the piano yesterday. A. when B. while C. after D. since 8. My parents don’t mind what job I do I am happy. A. even though B. as soon as C. as long as D. as though 9. You can’t borrow books from the s chool library ______ you get your student card. A. before B. if C. while D. as 10. All the dishes in this menu, otherwise stated, will serve two to three people. A. as B. if C. though D. unless of the financial crisis, days are gone _ _ local 5-star hotels charged 6,000 yuan for
高中英语语法权威解析 目录: 第０１章名词性从句 第0２章“Iｔ”用法及其句型与固定搭配讲解 第03章高中英语语法中得省略现象 第04章主谓一致 第05章动词不定式 第06章倒装结构 第07章定语从句 第０8章被动语态 第09章祈使句 第10章感叹句 第１1章疑问句 第12章名词 第一章名词性从句 在句子中起名词作用得句子叫名词性从句(Ｎｏun Cｌaｕsｅs)。名词性从句得功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等,因此根据它在句中不同得语法功能,名词从句又可分别称为主语从句、宾语从句、表语从句与同位语从句、一. 主语从句 主语从句就是在复合句中充当主语得从句,通常放在主句谓语动词之前或由形式主语it 代替,而本身放在句子末尾。 1. It 作形式主语与ｉt引导强调句得比较 It 作形式主语代替主语从句,主要就是为了平衡句子结构,主语从句得连接词没有变化、而i ｔ引导得强调句则就是对句子某一部分进行强调,无论强调得就是什么成分,都可用连词that。被强调部分指人时也可用who/ｗｈｏｍ、例如: ａ) It isａpitｙｔhaｔyoｕｄidn’t go ｔo seｅｔhｅｆilm.您不去瞧那场电影真可惜。 b) It doeｓn’tｉntereｓt me whethｅrｙou sｕｃceed or not、我对您成功与否不感兴趣、 c) Ｉｔisｉn thｅｍoｒnｉng thaｔｔｈe ｍurder took place. 谋杀案就是在早上发生得、(强调句型) d) Ｉt is Joｈn tｈat broke ｔｈeｗｉｎdow。就是Joｈn打碎得窗户。(强调句型) 2、用ｉt 作形式主语得结构 (1)It is + 名词＋从句 It is ａfaｃt tｈat…事实就是… Ｉt ｉs an honor ｔhat …非常荣幸 It ｉｓｃommon knowlｅdge ｔhat …就是常识 (2)Ｉt is + 形容词+从句 It is naturａl thａt…很自然… It ｉｓstrａｎｇe that…奇怪得就是…(3) It ｉｓ＋不及物动词+ 从句 Ｉｔｓｅems thａｔ…似乎… Ｉt ｈappeneｄthat…碰巧… Iｔappeaｒs that…似乎…
初中英语语法状语从句讲解专项练习选择合适的连接词，完成下列句子。 spends a lot of money on books______he is not rich. fell into sleep ______she was listening to the music. David at school today ----No. He is at home ______he has a bad cold. , won't have supper ______my mother comes back. to him slowly ______he may understand you better. 6. ______ she doesn't come on Sunday, I'll go fishing by myself. is four years ______I had left that small village. 8. ______the air moves, it is called wind. will go to the park ______it doesn't rain tomorrow. boys did ______much work. are few new words in the passage ______we can't understand it. ? back ______you come from. reached the station ______the train had left. you have a swimming pool ----No, we don't. At least, not ______big ______yours. me your paper ______you have finished it. is raining hard, ______we have to stay at home. 17. ______you work harder, you'll never pass the final exam. after the children ______I am out. ' village is ______far away ______I can't get there on foot. is ______an interesting book ______I can't stop reading it. 能力提高练习 1 ( ) 1 The meeting didn't start___ everyone was there. A. because B. until C. why D. if ( ) 2 The boy ___ to bed ___ his mother came in. A. went not; until B. didn't go; after C. went; until D. didn't go; until ( ) 3 I won't believe you___ I have seen it with my own eyes. A. before B. until C. after D. when ( ) 4 He ___ home ___ she was satisfied ___ his answer yesterday. A. didn't go; until; with B. wasn't go; after; to C. doesn't go; before; with D. didn't go; until; to ( ) 5 He ___ back until the work ___ done. A. isn't; will be B. isn't; is C. won't be; will be D. won't be; is ( ) 6 They didn't start the work ___ their teacher came back. A. until B. while C. as soon as D. if 2 ( ) 1 Tom will call me as soon as he ___ Shanghai. A. arrives B. will reach C. arrives in D. get to ( ) 2 I'm sure he'll come to see me before he ___ Beijing. A. will leave B. is leaving C. leave D. leaves ( ) 3 I will tell him the news as soon as he___ back. A. come B. comes C. will come D. came 3 ( ) 1 Tom has got a watch. He ___ it for two years. It _______ by his father. A. has bought; was bought B. has got; is bought , C. was bought; has bought . D. has had; was bought "' ( ) 2 When he got to the station, the train ___. A. left B. had left C. leaves D. has left
初中英语语法专题讲座——状语从句 状语从句在复合句中作状语，修饰动词、形容词或副词等。状语从句可以表示时间、条件、原因、地点、目的、结果、让步、方式、比较等意义。 知识梳理：提纲挈领，抓住重点和难点！ 各类状语从句连接词（短语）一览表： 时间 when, while, as, as soon as, since, until, after, before，as long as（长达……之久） 条件 If, unless,as/so long as(只要) 原因 As, because, since，as/so long as(既然,因为) 地点 Where 目的 So that(为了), in order that 结果 So that（方便）, so…that,such…that 让步 though, although, even if, however 方式 As 比较than, (not)as…as, 时间状语从句： Whenever he comes, he brings a friend. 他每次来都带个朋友。 They all continued their regard for me as long as they lived. 他们毕生都在关心着我. 条件状语从句： As long as I am alive, I will go on studying. 只要我活着，我就要学习。 原因状语从句： Since we live near the sea, we enjoy nice weather.由于我们住在海边，能享受到好的天气。 地点状语从句： Put it where we can all see it.把它放在我们都能看到的位置。 目的状语从句： Finish this so that you can start another.把这个做完，（为了）你可以开始另一个。 结果状语从句： He was so angry that he couldn't say a word. 他气得说不出话了。 让步状语从句： Though he is in poor health, he works hard.虽然他身体不好，但是他工作很努力。
八年级下册英语语法知识点归纳总结 He said I was hard-working. 重点语法：宾语从句 结构：主语 + 谓语动词 + 宾语从句(主语 + 谓语动词 + 宾语/表语) 例句：----Im good at English. He says. (改为加宾语从句的复合句) ----He says Im good at English. 注意：①主句是一般现在时态，宾语从句的时态不受其影响。 例句：He says Im good at English now. He says I was good at mathematics when I was young. ②主句是过去时态，宾语从句也要用过去时态。 例句：He said I was good at mathematics when I was young yesterday. He said I was good at English now yesterday. ③宾语从句是客观真理时永远用一般现在时态。 例句：Our teacher says 24 hours make a day. Our teacher said the sun gives us so many energy yesterday. ④动词原形不能作主语，必须用其 -ing 形式。 例句：She said helping others changed her life. 重点短语：direct speech 直接引语
reported speech = indirect speech 间接引语 first of all = at first 首先 pass on 传递 be supposed to do sth. 应该做某事 be good at = do well in 在某方面做得好 in good health 身体健康 get over 克服 open up 打开 care for = take care of = look after 照料;照顾 not any more = not any longer = no longer 不再 have a cold 感冒 end-of-year exam 年终考试 get nervous 变得紧张 forget to do sth. 忘记做某事(该事未做) forget doing sth. 忘记做某事(该事已做) its + adj. + [for sb.] + to do sth. 做某事[对某人来说](加形容词) context 上下文 Reading Strategy(阅读方法) First read for meaning， not for detail. (首先理解文段的大致意思，不在于文段的细节部分。) You can understand the meaning of a word you dont know from
英语语法一般将来时归纳总结 一、单项选择一般将来时 1．I ________ for Beijing next Saturday. Do you know when the earliest plane ________ on Ssturday? A．am leaving；takes off B．leave；takes off C．leave; is taking off D．am leaving; is taking off 【答案】A 【解析】 试题分析：考查瞬间性动词的时态问题。Arrive，leave，go等瞬间性动词用一般现在时表示将来时态。一般现在时态中，主语是第三人称单数，谓语动词要加s。句意：我下个星期六将要离开去北京。你知道星期六最早的航班是什么时候的吗？故选A。 考点：考查瞬间性动词的时态问题 2．--I have you asked John to come to the party this evening？ --Yes，I have，but he＿＿＿＿ A．doesn't B．hasn't C．hadn't D．won't 【答案】D 【解析】 试题分析：此处doesn't 表示一般现在时； hasn't 现在完成时；hadn't 过去完成时； won't 一般将来时，意为：不愿，表意愿。句意：—我让你请求John来参加今晚是聚会？—是的，我请了，但他不愿意来。根据句意选D。 考点：考查动词时态。 3． Turn on CCTV news and we ________how happy our life is. But there is no denying that over the past decades, the cost of living ________ sharply. A．are seeing; had increased B．will see；has been increasing C．see; increased D．have seen; is increasing 【答案】B 【解析】 试题分析:考查动词时态。前句是固定句型“祈使句，and+句子（一般用将来时）”，而时间状语over the past decades是现在完成时态或现在完成进行时态的标志，所以B选项正确。句意：打开中央新闻联播我们就会看到我们的生活是多么的幸福。但是不能否认在过去的几十年里，生活费用一直在急剧上涨。 考点：考查动词时态。 4．Japan’s economy _______ in the past twenty years. No one knows how long it ______ before it regains its increase. A．has been declining; will be B．has declined; would be C．had been in decline; would take D．was on the decline; will take
时间状语从句常由以下连接词引导：when（当……时），as（一边……一边；当…时），while（在……期间），after（在……之后），before（在……之前），as soon as（一……就），since（自从），till(until)（直到……，直到……才），whenever（任何时候），the moment（一……就），no sooner than（一……就），hardly…when… （一……就）等。由以上连接词（或词组）连接的主从复合句中，主句和从句的动作，有的是同时发生，有的是先后发生。因此，要特别注意根据连接词所代表的时间不同，主句和从句的谓语要使用相应的时态。这是掌握时间状语从句的关键。 1. when 和whenever 引导的从句：从句的动作和主句的动作可以同时发生，也可以先于主句的动作发生。例如： When we reached home, it was already dark. 我们到家的时候天已经黑了。 When my cousin came yesterday, I was playing volleyball. 昨天我表哥来时，我正在打排球。 When it rains, I go to school by bus.下雨的时候，我坐车去学校。 I shall tell her the good news when she comes. 她来时，我将告诉她这个好消息。（主从句都表示将来发生的动作，但要注意从句中要用一般现在时，表示将来。） Come to see us whenever you can.你什么时候有空，就过来看看我们。 2. while 和as 引导的从句：while表示“当…过程中”，强调某一段时间主句和从句的动作在同时发生。as表示“当…时”或 “一边…一边”，主句和从句的动作同时发生。例如： Work while you work; play while you play. 该工作的时候就工作，该玩的时候就玩。 While he is reading, he always makes notes. 他经常一面看书，一面做笔记。 She sings as she goes along.她边走边唱。 You will grow wiser as you grow older. 随着年龄的增长，你会更加聪明起来。 3. before 和after 引导的从句：前者一般表示主句的动作发生在从句动作之前。后者表示主句的动作发生在从句动作之后。 例如： I didn’t know any English before I came here. 我来这儿之前，一点英语都不懂。 I had written my report before my mother came back.
八年级下册英语语法知识点归纳总结 （2021最新版） 作者：______ 编写日期：2021年__月__日 【导语】要想取得好的学习成绩，必须要有良好的学习习惯。习惯是经过重复练习而巩固下来的稳重持久的条件反射和自然需要。建立良好的学习习惯，就会使自己学习感到有序而轻松。以下是小编为您整理的《八年级下册英语语法知识点归纳总结》，供大家查阅。 【篇一】 He said I was hard-working. 重点语法：宾语从句结构：主语 + 谓语动词 + 宾语从句(主语 + 谓语动词 + 宾语/表语) 例句：----Im good at English. He says. (改为加宾语从句的复合句)
----He says Im good at English. 注意：①主句是一般现在时态，宾语从句的时态不受其影响。例句：He says Im good at English now. He says I was good at mathematics when I was young. ②主句是过去时态，宾语从句也要用过去时态。例句：He said I was good at mathematics when I was young yesterday. He said I was good at English now yesterday. ③宾语从句是客观真理时永远用一般现在时态。例句：Our teacher says 24 hours make a day. Our teacher said the sun gives us so many energy yesterday. ④动词原形不能作主语，必须用其 -ing 形式。例句：She said helping others changed her life. 重点短语：direct speech 直接引语 reported speech = indirect speech 间接引语 first of all = at first 首先 pass on 传递 be supposed to do sth. 应该做某事 be good at = do well in 在某方面做得好 in good health 身体健康 get over 克服 open up 打开 care for = take care of = look after 照料;照顾 not any more = not any longer = no longer 不再 have a cold 感冒 end-of-year exam 年终考试 get nervous 变得紧张 forget to do sth. 忘记做某事(该事未做) forget doing sth. 忘记做某事(该事已做) its + adj. + [for sb.] + to do sth. 做某事[对某人来说](加形容词) context 上下文 Reading Strategy(阅读方法) First read for meaning， not for detail. (首先理解文段的大致意思，不在于文段的细节部分。) You can understand the meaning of a word you dont know from the context. (至于不懂的单词，
英语语法现在进行时归纳总结 一、单项选择现在进行时 1．-- I am afraid I can’t help you with your project. I ________ a model these days. -- It doesn’t matter. I will finish it by myself. A．make B．will be making C．am making D．have made 【答案】C 【解析】 试题分析：考查动词时态。句意：我恐怕不能帮你完成项目了，这几天我要做一个模型。没关系，我会自己完成。表示这几天一直要做的事情，用一般现在时表示将来，故选C 项。 考点：考查动词时态 2．—I some courses at university，so I can’t work full time at the moment． A．take B．am taking C．took D．have taken 【答案】B 【解析】 试题分析：考查动词的时态。句意：因为我正在上学，所以不能在这时候做全职的工作。根据下方提到so I can’t work full time at th e moment 可知我正在上学，故选B 项。 考点 : 考查动词的时态 3．The water supply has been cut off temporarily because the workers the main pipe．A．repair B．repaired C．have repaired D．are repairing 【答案】D 【解析】 试题分析：考查动词的时态。句意：因为工人正在修理主管道，所以水供应暂时被切断。根据语境表示，修理管道这件事正在进行，所以选D项。 考点 : 考查动词的时态 4．– Do you think we should accept that offer? -- Yes, we should, for we ___such bad luck up till now, and time __ out. A．have had; is running B．had; is running C．have; has been run D．have had; has been run 【答案】A 【解析】 【详解】 考查动词的时态。 句意：---你认为我们应该接受那个建议吗？ ---是的，我们应该，因为到目前为止我们已经运气很糟糕，并且时间也正在被耗尽。
高中英语语法总结 第一章主谓一致 (一) 语法一致原则: 即主语为单数,谓语用单数,主语为复数,谓语也用复数. 以下为注意事项: 1. 单数主语即使后面带有with , along with, together with, like(像), but (除了),except, besides, as well as, no less than, rather than(而不是), including, in addition to 引导的短语, 谓语动词仍用单数. 如: Air as well as water is matter. 空气和水都是物质. No one except two servants was late for the dinner. 除了两个仆人外, 没有一个人迟来用餐。 2. 用and连接的并列主语,如果主语是同一个人,同一事,同一概念, 谓语动词用单数, 否则用复数. 如: The poet and writer has come. 那位诗人兼作家来了.(一个人) A hammer and a saw are useful tools. 锤子和锯都是有用的工具. (两样物) 用and连接的成对名词习惯上被看成是一个整体, 如:bread and butter(黄油抹面包), knife and fork(刀叉)等作主语时, 谓语动词用单数。 3. 不定式(短语), 动名词(短语), 或从句作主语时, 谓语动词用单数. 如: Serving the people is my great happiness. 为人民服务是我最大的幸福. When we’ll go o ut for an outing has been decided. 我们什么时候出去郊游已决定了。 4. 用连接的并列主语被each, every 或no修饰时, 谓语动词用单数. Every boy and every girl likes to go swimming. 每个男孩和每个女孩都喜欢去游泳. No teacher and no student was absent from the meeting. 没有老师也没有学生开会缺席. Each man and (each) woman is asked to help. 每个男人和每个女人都被请去帮忙。 5. each of + 复数代词, 谓语动词用单数. 复数代词+each, 谓语动词用单数.如:Each of us has something to say. 我们每个人都有话要说。 6. 若主语中有more than one 或many a/an , 尽管从意义上看是复数, 但它的谓语动词仍用单数。但more+复数名词+than one做主语时, 谓语动词仍用复数. 如: Many a boy likes playing basketball. 许多男生都喜欢打篮球. More than one student was late. 不只一个学生迟到 More persons than one come to help us. 不止一个人来帮助我们。 7. none 做主语时,谓语动词可用单数, 也可用复数; 但在代表不可数的东西时总是看作单数,因而谓语动词要用单数. 如: None of us are (is) perfect. 人无完人。 None of this worries me. 这事一点不使我着急。 8. 名词如: trousers, scissors, clothes, goods, glasses 等作主语时, 谓语动词必须用复数. 如: His clothes are good. 但这些名词前若出现a pair of , 谓语一般用单数.如: A pair of glasses is on the desk. 桌上有一副眼镜。 9. 形复意单名词如:news ; 以ics 结尾的学科名称如: physics, mathematics, economics; 国名如: the United States; 报纸名如: the New Times; 书名如: Arabian Night <天方夜谈>; 以及The United Nations<联合国> 等作主语时, 谓语动词用单数。 10. “a +名词+and a half “, “one and a half + 名词”, “the number of + 名词”等作主语时, 谓语动词要用单数. 如: Only one and a half apples is left on the table.
英语语法大全之方式状语从句 方式状语从句通常由as, (just) as…so…, as if, as though引导。 1）as, (just) as…so…引导的方式状语从句通常位于主句后，但在(just) as…so…结构中位于句首，这时as从句带有比喻的含义，意思是"正如…"，"就像"，多用于正式文体，例如：Always do to the others as you would be done by. 你希望人家怎样待你，你就要怎样待人。 As water is to fish, so air is to man. 我们离不开空气，犹如鱼儿离不开水。 Just as we sweep our rooms, so we should sweep backward ideas from our minds. 正如打扫房屋一样，我们也要扫除我们头脑中落后的东西。 2）as if, as though 两者的意义和用法相同，引出的状语从句谓语多用虚拟语气，表示与事实相反，有时也用陈述语气，表示所说情况是事实或实现的可能性较大。汉译常作"仿佛……似的"，"好像……似的"，例如： They completely ignore these facts as if (as though) they never existed. 他们完全忽略了这些事实，就仿佛它不存在似的。（与事实相反，谓语用虚拟语气。） He looks as if (as though) he had been hit by lighting. 他那样子就像被雷击了似的。（与事实相反，谓语用虚拟语气。） It looks as if the weather may pick up very soon. 看来天气很快就会好起来。（实现的可能性较大，谓语用陈述语气。） 说明：as if / as though也可以引导一个分词短语、不定式短语或无动词短语，例如： He stared at me as if seeing me for first time. 他目不转睛地看着我，就像第一次看见我似的。 He cleared his throat as if to say something. 他清了清嗓子，像要说什么似的。 The waves dashed on the rocks as if in anger. 波涛冲击着岩石，好像很愤怒。 https://www.doczj.com/doc/4014450208.html, 北京微课创景教育科技有限公司- 1 -
高考英语语法状语从句习题及讲解 1. 状语从句的类型 1〕时间状语从句：常见引导词有： when：表示主句和从句的动作同时或先后发生，强调点，表“就在那时；突然”. while：常表示延续性动词或状态；while也可表示对比的转折. as soon as：表示从句的动作一发生，主句的动作马上就发生. hardly / scarcely … when；no sooner … than：表示“还没来得及……就；刚……就”. directly, immediately, instantly：副词当连词用，表示“一……就”. the moment, the minute, the second：充当连词，等于when / as soon as. each time, every time, next time, by the time等：也可以引导时间状语从句. since：引导的时间状语从句，主句常用现在完成时，从句常用一般过去时.常用句型：It is + 段时间+ since从句，“自从……有多长时间了”. until：常与not连用，表示“直到……才……”；Not until置于句首时，主句要部分倒装；在It is / was…that / who…强调结构中，须连在一起. 2〕让步状语从句：常见引导词有：although, though, even if, even though, as等. 3〕原因状语从句：常见引导词有： because：常用于回答why, 语气最强；强调原因，常与just, only等起强调作用的副词连用；可引导表语从句. for：是个并列连词，一般不放在句首，常表示一种推测或解释，或用作附加说明，语气弱. as, since：常译为“既然、由于”，表示十分明显的原因，语气较弱. now that：表示“既然”的意思. 4〕地点状语从句：常见引导词有：where, wherever等. 5〕目的状语从句：常见引导词有：that, so that, in order that等.目的状语从句的谓语动词常与情态动词连用，否则可能是结果状语从句.不可 置于句首.目的状语从句还可以用动词不定式来替换. 6〕结果状语从句：常见引导词有：that, so that, so … that, such … that …等. 7〕方式状语从句：由as, as if〔though〕等引导.