一．以动词write 为例，判断时态，写出句子。
1. 她每周写一封英文信。（一般现在时）
2. 她上星期写了一封英文信。（一般过去时）
3. 下星期天她要（打算）写一封英文信。（一般将来时）
4. 看！她在那边写一封英文信。（现在进行时）
5. 昨天下午3点到5点她在写一封英文信。（过去进行时）
6. 明天的现在我在开会呢！
7. 她说（said)她要写一封英文信给妮卡。（过去将来时）
8. 她已经给妮卡写了一封英文信。（现在完成时）
9. 到上学期末她已写了10封英文信。（过去完成时）
10. 等汤姆回来，他妈妈将已经出发去伦敦了。（将来完成时）
11. 他从8:00 开始一直在读书。（现在完成进行时）
二、16种时态
1.一般现在时除表现在状态，经常性，习惯性动作外，表客观事实和真理.
The sun rises in the east and goes down in the west.
Our teacher said the the earth____(be) round in the class.
2.进行时和always，all the time, constantly连用常表示一种感情如赞叹、不满、厌烦等。（阅读完型）
You two are always talking in the class
She is always thinking of others.
3.在条件状语从句和时间状语从句中通常用一般时态代替将来时态（主将从现），但如果强调意愿，从句也可以用will.
We will not go to the park if it rains tomorrow.
If he will go, nobody can stop him.
4.将来时的六种表达
（1）shall/will do 表将要发生的动作或情况
（2）Be going to do 多用于口语，表打算，计划做的事情：根据现在的迹象推断即将发生或肯定要发生的事
Look at the dark clouds, it is going to rain.
How are you going to spent yous summer holiday?
*** was going to 可表过去打算做而未做的事情
I was going to the party last night, but i suddenly remember i had homework to do.
（3）Be doing 表预计或安排近期要发生的事，限于一些瞬间动词（die, come, go, arrive, begin, stay，leave）
The man is dying.
I’m coming.
I am leaving for Beijing tomorrow.
（4）Be to do 不能用于表示客观情况
①表示按计划安排将要发生的事
The high way is to be opened next month.
The cantine is to be in service in september.
②表示征求对方意见(不讲)
When are we to hand in our homework?
③表不可避免的后来要发生的事
The worse was still to come.
④表该做或不该做的事
You are not to smoke in the room.
You are not to go out alone.
You are to report it to the police.
（5）Be about to do 即将要做的事，不和具体时间状语连用,但可以和并列连词when（and at that time）引出的分句连用。
He is 59 now and he is about to retire.
I was about to leave when it began to rain.
I am about to leave tomorrow.(wrong)
（6）Do按计划和规定将要发生的事，通常和有关时刻表连用。
We must hurry up. The first class begins at 8:00.
The plane takes off at 4:00 a.m.
5.现在完成时的常用状语
(1)某动作开始与过去，持续到现在（也许还要持续下去）Lately, recently, in the last/past few days/years, since then, up to now, so far
He has written 8 books so far.
(2) 发生在过去但对现在产生影响Already, just, yet, never, before
He has turned off the light.
The concert has started.
I have already seen the film.
(3)瞬间动词可以用于完成时态，但不可以和表一段时间的状语连用（否定式除外），若连用需变换形态。
He has already come.
He has come for an hour.
He has been here for half an hour.
Die-be dead, get up-be up, arrive/come/begin/become-be, buy-have, leave-be away/from
Join-be in, borrow-keep
6.过去完成时（过去的过去）by/until/before/by the end of 过去的某一时间
By then he had learned English for 3 years.
(2)表示愿望，打算一类的词汇，如hope, expect, mean, intend,want, suppose等过去完成时表未曾实现的意愿
I had meant to help you.
I had hoped to see more of Shanghai.
7.将来完成时by 将来的某个时间
8.固定句型
Was/were doing+when
We were having supper when the ring rang.
Was/were about to do +when
I was about to leave when it began to rain.
Have done +since
It is +时间段+since
It is 20 years since my uncle left home.
Had done +by+过去时间
Have done....in/during the last/past
It is the first/second...time that ...have done...
It is the first time that i have heard such strange things.
No sooner had...done...than...
No sooner had i arrived home than he came in.
Hardly had ....done...when....
Hardly had he fallen asleep when someone knocked at his door.
9.时态呼应
(1)主将(祈使句，情态动词+do)从（时间，条件，让步）现（现在进行时，现在完成时）Whatever you say, i will not change my mind.
If she is still waiting, tell her to go home
I will go with you as soon as i have finished my home work.
（2）宾从时态受主句谓语时态制约
*主句现在或将来，宾从不受影响
He says his father is/was/will be a teacher.
He will tell you that they are living/lived/will leave/have leaved in shanghai.
*主句过去式，宾从用过去式的某个“体”即，过去进行时，过去完成时。。。。
I was sure he was in bed.
He thought he was working for the people.
He wanted to know what she had been doing.
*宾从表真理
1. Please do me a favor — ______ my friend Mr. Smith to Youth Theater at 7:30 tonight. A. to invite B. inviting C. invite D. invited 2. —I called you last night，but nobody answered. —Oh，I usually________ off my cell phone by 8:00 pm. A. switched B. have switched C. switch D. had switched 3. I _________ping-pong quite well, but I haven’t had time to play since the new year. A. will play B. have played C. played D. play 4. The house belongs to my aunt but she D. doesn’t live 5. The father as well as his three children skating on the frozen river every Sunday A. is going B. go C. goes D. are going 6. Months ago we sailed ten thousand miles across this open sea, which _____ the Pacific, and we met no storms. A. was called B. is called C. had been called D. has been called 7. In many parts of the world, tea ________ milk mild and sugar. A. is serving B. is served C. serves D. served 8 The fact that so many people still smoke in public places ___ that we may need a nationwide campaign to raise awareness of the risks of smoking. A. suggest B. suggests C. suggested D. suggesting 9. Around two o’clock every night, Sue will start talking in her dream. It somewhat ______ us. A. bothers B. had bothered C. would bother D. bothered 10. The palace caught fire three times in the last century, and little of the original building _______now. A. remains B. is remained C. is remaining D. has been remained 11. Look at the pride on Tom’s face. He_______ to have been praised by the manager just now. A. seemed B. seems C. had seemed D. is seeming 12. In the spoken English of some areas in the US, the "r" sounds at the end of the words . A. are dropped B. Drop C. are being dropped D. have dropped 13. —Do you have any problems if you —Well， A. offer C. are offered D. will be offered 14. The wet weather will continue tomorrow，when a cold front A. is expected C. expects D. will be expected 15. —How long do you want me to heat the oil? —Heat it till it ________ to smoke. A. would begin B. begins C. will begin D. began 16. The number of deaths from heart disease will be reduced greatly if people ___to eat more fruit and vegetables. A. persuade B. will persuade C. be persuaded D. are persuaded 17. — When will you come to see me, Dad? — I will go to see you when you the training course. A. will have finished B. will finish C. are finishing D. finish 18. Come and see me whenever _______. A. you are convenient B. you will be convenient C. it is convenient to you D. it will be convenient
时态是英语谓语动词的一种形式,表示动作发生的时间和所处的状态.英语中的时态是通 过动词形式本身的变化来实现的.英语有16种时态,但中学阶段较常用的有十种:一般现在时,一般过去时,一般将来时,过去将来时,现在进行时,过去进行时,将来进行时,过去完成时,英在完成时和现在完成进行时. 1.一般现在时的用法 1) 经常性或习惯性的动作，常与表示频腮度的时间状语连用。时间状语： every..., sometimes, at..., on Sunday。例如： I leave home for school at 7 every morning. 每天早上我七点离开家。 2) 客观真理，客观存在，科学事实。例如： The earth moves around the sun. 地球绕太阳转动。 Shanghai lies in the east of China. 上海位于中国东部。 3) 表示格言或警句。例如： Pride goes before a fall. 骄者必败。 注意：此用法如果出现在宾语从句中，即使主句是过去时，从句谓语也要用一般现在时。 例：Columbus proved that the earth is round. 哥伦布证实了地球是圆的。 4) 现在时刻的状态、能力、性格、个性。例如： I don't want so much. 我不要那么多。 Ann writes good English but does not speak well. 安英语写得不错，讲的可不行。 比较：Now I put the sugar in the cup. 把糖放入杯子。 I am doing my homework now. 我正在做功课。 第一句用一般现在时，用于操作演示或指导说明的示范性动作，表示言行的瞬间动作。第二句中的now是进行时的标志，表示正在进行的动作的客观状况，所以后句用一般现在时。
高中英语语法(时态和语态) 一．动词的时态 时态是谓语动词所表示的动作或情况发生时间的各种形式。英语动词有16种时态，但是常见的只有九种：一般现在时、一般过去时、一般将来时、现在进行时、过去进行时、现在完成时、过去完成时、过去将来时、现在完成进行时。 (一）一般现在时（do / does） 1．具体用法 1) 表示经常性或习惯性动作 We always care for each other and help each other. 我们总是互相关心互相帮助。 He goes to school every day. 2)表示现在的特征或状态 He is very happy. Do you sing? ----A little. 3)表示普遍真理 Light travels faster than sound. 光速比声速快。 Actions speak louder than words. 行动胜过言语。 * 常与一般现在时态连用的词或短语主要有：often, usually, sometimes, every day, every morning/afternoon, on Sundays/weekends等等。 I often go to the cinema on Sundays. 我经常星期天去看电影。 He goes to work early every day. 他每天上班很早。 （二）一般过去时( did ) （1）表示过去某一特定时间所发生的、可完成的动作或状态，常与表示确切过去时间的词、短语或从句连用。例如： We went to the pictures last night and saw a very interesting film. （2）表示过去习惯性动作。例如： He always went to class last. I used to do my homework in the library. （三）一般将来时( will / shall do) 1）表示将来打算进行或期待发生的动作或状态。例如： I shall graduate next year. 2）一般将来时有时可以表示一种倾向或习惯性动作。如 Crops will die without water. You won’t succeed with out their support. 3) 几种替代形式： *be going to +v在口语中广泛使用，表示准备做或将发生的事情。例如： I'm going to buy a house when we've saved enough money. *be to +v表示计划安排要做的事，具有"必要"的强制性意义。例如： I am to play tennis this afternoon. *be about to +v表示即将发生的事情。例如： He was about to start. *be due to +v表示预先确定了的事，必定发生的事。例如： The train is due to depart in ten minutes. 5）少数动词如：begin, come, leave, go, arrive, start, stop, return, open, close等的一般现在时可用来表示将来的动作。（多用来表示按计划事先安排好即将发生的动作，句中通常还有一个表示将来的时间状语）。例如： The meeting begins at seven.
英语中的动词有时态(Tense)要求。所谓“时”,即动作发生的时间；“态”， 即动作的方式状态。“时”有四种：现在时，过去时，将来时，过去将来时； “态”也有四种：一般式，进行式，完成式，完成进行式。因此，英语中一共有 二.新课讲解 1.一般过去时（the Past Simple） (1)用法(uses) 表示过去某时发生的动作或存在的情况。如： He worked in a bank all his life. He discovered a desert island in the Pcific. The safari was exciting but dangerous. I knew what he meant. They always interviewed new employees on Fridays. (2)形式（form） 即动词的过去式，分两种情况，一种是在动词结尾加ed或ied，这种动词 称为规则动词，另一种不能加，形式多样，称为不规则动词。 规则动词： a.一般情况下，动词词尾加 -ed ，如： work-worked play-played want-wanted act-acted b.以不发音的 -e 结尾动词，动词词尾加 -d，如： live-lived move-moved decide-decided decline-declined hope-hoped judge-judged raise-raised wipe-wiped c.以辅音字母 + y结尾的动词，把-y变为-i 再加-ed，如： study-studied try-tried copy-copied justify-justified cry-cried carry-carried embody-embodied empty-emptied d.以一个辅音字母结尾的重读闭音节动词，双写词尾辅音字母，再加 -ed，如： stop-stopped beg-begged drag-dragged drop-dropped plan-planned drip-dripped
高中英语动词时态和语态专项练习题 1 （200 2 全国高考题）—You haven ' t said a word about my new c，oaBt renda.Do you like it? —I ' m sorry I ______ anything about it sooner.I certainly think it s pretty on A. wasn ' t saying B.don ' t say C.won' t say D.didn ' t say 2. ______________________________________ （2002全国高考题）I wonder why Jenny us recently.We should have heard from her by now. A. hasn ' t written B.doesn 't write C.won' t write D.hadn ' t written 3. （2003北京春季高考题）—When will you come to see me，Dad? —I will go to see you when you ______ the training course. A. will have finished B.will finish C.are finishing D.finish 4. ____________________________________ （2003北京春季高考题）—How long at this job? —Since 1990. A. were you employed B.have you been employed C.had you been employed D.will you be employed 5. __________________________________________________________________ （2003上海春 季高考题）By the end of last year，another new gymnasium _________________ in Beijing. A. ________________________________ would be completed B.was being completed C.has been completed D.had been completed 6. ________________________________ （2002北京高考题）The little girl _ her heart out because she _______________________ her toy bear and believed she wasn ' t ever going to find it. A. had cried; lost B.cried; had lost C.has cried; has lost D.cries; has lost 7. （2002北京高考题）—Excuse me，sir.Would you do me a favor? —Of course.What is it? —I _______ if you could tell me how to fill out this form. A.had wondered B.was wondering C.would wonder D.did wonder 8. ______ （2002上海高考题）He will have learned English for eight years by the time he from the university next year. A.will graduate B.will have graduated C.graduates D.is to graduate 9. ____________________________________________ （2002上海高考题）I feel it is your husband who __________________________________ for the spoiled child. A.is to blame B.is going to blame C.is to be blame D.should blame 10. _____________________________________________________________ He has been writing the composition the whole morning and he still __________________________ . A.has been B.does C.has D.is
高中英语时态语态讲解 1、一般现在时主要用来表示人、事物的现在状况和特点；表示经常或习惯性的动作；表示客观规律和永恒真理；按照计划安排好了将要发生的动作（一般指时 刻表）等 He usually goes to w ork at 7 o’clock every morning. The train to Shanghai leaves at 7am. 考点一：表示永恒的真理，即使出现在过去的语境中，仍用一般现在时。如：I learned that the earth goes around the sun when I was in primary school. 考点二：在时间、方式、让步和条件状语从句中，代替一般将来时；常用的引导词有：时间：when, until, after, before, as soon as, once, the moment/the minute, the day; 条件：if, unless, provided. If he accepts the job, he will get more money soon. 只要他努力工作，我不介意他什么时候做完试验。 2、现在进行时 表说话时或目前一段时间内正在进行的活动；或表感情色彩，加强语气。与频率副词，如always，constantly，continually，again等连用表示说话人的某种感情色彩（赞叹、厌烦、埋怨等）。 We are having English class. The house is being built these days. The little boy is always making trouble. 考点一：在时间状语或条件状语从句中表示将来正在进行的动作。Look out when you are crossing the street. Don't wake him up if he is still sleeping at 7 tomorrow morning. 考点二：表示在最近按计划或安排要进行的动作（这时多有表示将来的时间状语）。 Marry is leaving on Friday. 3、现在完成时 （1）非延续动作：动作发生在过去，对现在有影响。（2）延续性动作：动作和状态的持续。现在完成时有一些标志性的时间状语： 考点一：for + 时间段；since + 时间点 They have lived in Beijing for five years. They have lived in Beijing since 1995. 考点二：常见的不确定的时间状语：lately; recently, just, already, yet, up to now; till now; so far, these days, Has it stopped raining yet ? 考点三：在表示“最近几世纪/ 年/ 月以来……”时间状语中，谓语动词用现在完成时。 in the past；over the past; during the last等 考点四：表示“第几次做某事，”或在“It is the best (worst, most interesting ) +名词＋that” 后面,主句是一般现在时态时，从句用现在完成时。 This is my first time that I have visited China. This is the most interesting film I have ever seen. 4．一般过去时 表在过去某个特定时间发生且完成的动作，或过去习惯性动作，不强调对现在的影响，只说明过去。常跟明确的过去时间连用, 注意： 考点一：used to + do，表示过去经常但现在已不再维持的习惯动作。 be/become/get used to + doing，表示习惯于 He used to smoke a lot. He has got used to getting up early. 考点二：在时间和条件状语从句中，代替过去将来时。 He promised to buy me a computer if he got a raise 5. 过去进行时
动词时态语态及动词辨析练习100题 1. Once environmental damage ___, it will take many years for the system to recover. A has done B is to do C does D is done 2 --- When are you leaving? ---- My plane ___ at 10:45. A takes off B took off C is about to take off D will take off 3 I didn't like Aunt Lucy, who ___ without warning and bringing us presents. A always turned up B has always turned up C had always turned up D was always turning up 4 --- ____ my English book? I want to look up a word in it. ---- Yes, I ___ it lying on your desk a few minutes ago. A Had you seen, saw B Did you see , have seen C Have you seen,saw D Do you see, saw 5 He will phone ___ he ___ his work. A for the moment ,sets about B the moment,sets about C the moment, will set about D for the moment, will set about 6 That tree looked as if it ___ for a long time. A hasn't watered B didn't water C hadn't been watered D wasn't watered 7 --- Was Tom there when you arrived? --- Yes, but he ___ home soon afterwards. A had gone B has gone C is going D went 8 ---Would you mind if I __ here? --- Certainly not. Please go ahead. A will smoke B did smoke C smoked D am smoking 9 I should have written to you earlier, but ___ rather busy recently. A I've been B I'd been C I'm being D I were 10 --- Why weren't you at the meeting yesterday/ ---- I __ for a long-distance call from my aunt in America then. A waited B was waiting C had been waiting D had waited 11 Before the first non-stop flight made in 1949, it ___ necessary for all planes to land for refueling. A would be B has been C had been D would have been 12 ---Was that the first time ___ you ___ England's coast? --- Yes, it was. A /, left B when, have left C when, had left D /, had left 13 The car ran down the hill,and the driver ___ , according to the newspaper,to have been killed. A said B was saying C was said D had been said 14 --- He promised to come on time. --- What do you imagine ___ to him then? A has happpened B was happening C happening D was happened 15 --- Kate returned home yesterday. ---Really? Where ___ ? A has she been B had she gone C has she gone D had she been 16 ---Let's hurry.The President is coming. --- Oh, really? I ___ afraid that we ___ him. A was , had already missed B am, have already missed C am, will miss D was, was missing 17 --- Are you a visitor here? ---That's right..I ___ round the world and now my dream of coming to China ___ true. A am travelling,has come B was travelling,had come C have travelled, has come D had travelled, is coming
时态 时态（Tense）是表示行为、动作和状态在各种时间条件下的动词形式。因此，当我们说时态结构的时候，指的是相应时态下的动词形式。 1. 一般现在时 用法： A) 表示现在发生的动作、情况、状态和特征。 B) 习惯用语。 C) 经常性、习惯性动作。 例：He always helps others. （他总是帮助别人。） D) 客观事实和普遍真理。尤其要注意，如果前后文不是一般现在时，则无法保持主句、从句时态一致。 E) 表示一个按规定、计划或安排要发生的动作，（仅限于某些表示“来、去、动、停、开始、结束、继续”等的动词）可以与表示未来时间的状语搭配使用。常见的用法是：飞机、火车、轮船、汽车等定期定点运行的交通方式。 例：The next train leaves at 3 o'clock this afternoon. （下一趟火车今天下午3点开车。） How often does this shuttle bus run? （这班车多久一趟？） F) 在时间和条件状语从句里经常用一般现在（有时也用现在完成时）表示将来事情。 例：When you have finished the report, I will have waited for about 3 hours.（等你完成这份报告的时候，我就已经等了将近3个小时了。） 2. 现在进行时(be doing) 用法：现在正在进行的动作。 3. 现在完成时(have done) 用法： A) 表示动作到现在为止已经完成或刚刚完成。 例：I bought a new house, but I _________ my old one yet, so at the moment I have two houses. A) didn't sell B) sold C) haven't sold D) would sell 答案是C) haven't sold。 B) 表示从过去某时刻开始，持续到现在的动作或情况，并且有可能会继续延续下去。此时经常用延续性动词。时间状语常用since加一个过去的时间点，或for加一段时间，或by加一个现在时间。 例：Great as Newton was, many of his ideas ___________ today and are being modified by the work of scientists of our time. A) are to challenge C) have been challenged B) may be challenged D) are challenging C) 表示发生在过去，但对现在仍有影响的动作或情况。通常用点动词，如：arrive, begin, find, give, lose 等。 例：John has broken his left leg.（约翰摔断了左腿。） 注意事项 A) 现在完成时是联系过去和现在的纽带。现在完成时和过去时的区别在于：现在完成时强调动作的动态，或受动态的影响，是动态的结果，对现在有影响；过去时只表示过去的某个具体时间里发生的动作，与现在没有联系。 例：He worked in that hospital for 8 years.（他曾经在那家医院工作了8年。这只是讲述一个过去的事实，他现在已经不在那家医院了。） He has worked in that hospital for 8 years.（他已经在那家医院里工作了8年。表示他从过去开始工作，一直工作到现在，现在仍在那家医院工作。） B) 因为含有for加一段时间或since加一个时间点这样的时间状语的完成时，有动态和延续性的特点，所以
动词的时态和语态用法详解 在英语中，不同时间里发生的动作或存在的状态需要用动词的不同形式表示出来，动词的这种不同 形式就构成了动词的时态。 英语中的时态按动作发生时间分为现在时态、过去时态、将来时态 二、常见时态的基本用法 1. 一般现在时：一般现在时是描述现在或经常性的动作性质或状态的时态。常和表示频率、时间的副词 （短语） always, every time, now and the n, occasi on ally, often, seldom, sometimes, usually 连用。 1） 表示经常性或习惯性的动作。 We have three meals a day. 2） 表示客观事实、真理和自然现象。 Kno wledge is power. 3）表示现在的情况或状态。 I live in Beiji ng. 4）表示已经“列入日程”的将来的事件，尤其指计划中的和安排好的将来的动作，这些动词往往表示“出 发，到达”等含义 的词， 女口， arrive, begin, go, leave, start, stay 等。 The train arrives at 10:30. There's ple nty of time. 。 考点一：表示永恒的真理，即使出现在过去的语境中，仍用一般现在时。 如: I learned that the earth goes around the sun when I was in primary school. 考点二：在时间和条件状语从句中，代替一般将来时；常用的引导词有：时间：when, until, after, before, as soon as, on ce, the mome nt/the minu te, the day; 条件：if, uni ess, provided. If he accepts the job, he will get more money soon. 考点三：在 make sure (certain), see to it, mind, care, matter 替一般将来时。 So long as he works hard, I don ' t mind when he finish 考点四：在 the more …the more …(越 ..................... 越 ... )句型中 在时。 The harder you study, the better results you will get. 2. 一般过去时：一般过去时表示过去发生的动作、存在的状态，或反复发生的动作，句中一般都有表示 过去具体时间的时间 状语。 1）在确定的过去时间里所发生的动作或状态。 此时与表示过去的时间状语连用， 如yesterday, last week, an hour ago, the other day, in 1998 等。 +宾语从句，从句用一般现在时代 es the experime nt. ,若主句是一般将来时，从句通常用一般现
时态（Tense）是表示行为、动作和状态在各种时间条件下的动词形式。因此，当我们说时态结构的时候，指的是相应时态下的动词形式。 英语时态分为16种：一般现在、一般过去、一般将来、过去将来时，以及这四者的进行时、完成时和完成进行时。 1. 一般现在时 用法： A) 表示现在发生的动作、情况、状态和特征。 B) 习惯用语。 C) 经常性、习惯性动作。 例：He always helps others. （他总是帮助别人。） D) 客观事实和普遍真理。尤其要注意，如果前后文不是一般现在时，则无法保持主句、从句时态一致。 E) 表示一个按规定、计划或安排要发生的动作，（仅限于某些表示“来、去、动、停、开始、结束、继续”等的动词）可以与表示未来时间的状语搭配使用。常见的用法是：飞机、火车、轮船、汽车等定期定点运行的交通方式。 例：The next train leaves at 3 o'clock this afternoon. （下一趟火车今天下午3点开车。） How often does this shuttle bus run? （这班车多久一趟？） F) 在时间和条件状语从句里经常用一般现在（有时也用现在完成时）表示将来事情。 例：When you have finished the report, I will have waited for about 3 hours.（等你完成这份报告的时候，我就已经等了将近3个小时了。） 2. 现在进行时(be doing) 用法：现在正在进行的动作。 3. 现在完成时(have done) 用法： A) 表示动作到现在为止已经完成或刚刚完成。 例：I bought a new house, but I _________ my old one yet, so at the moment I have two houses. A) didn't sell B) sold C) haven't sold D) would sell 答案是C) haven't sold。 B) 表示从过去某时刻开始，持续到现在的动作或情况，并且有可能会继续延续下去。此时经常用延续性动词。时间状语常用since加一个过去的时间点，或for加一段时间，或by加一个现在时间。 例：Great as Newton was, many of his ideas ___________ today and are being modified by the work of scientists of our time. A) are to challenge C) have been challenged B) may be challenged D) are challenging
英语动词时态语态 1. --- Oh, dear. I forgot the air tickets. --- You ______ something. A. have left B. are always leaving C. are leaving D. always left 2. --- I ______ so busily recently that I ______ no time to help you with your math. --- That’s O K. I can manage it by myself. A. have been working; have B. have worked; had C. am working; will have D. had been working; had had 3. Remember to send me a photo of us next time you ______ to me. A. are writing B. will write
C. has written D. write 4. He ______ at the meeting, but his heart attack prevented him. A. will speak B. is going to speak C. had to speak D. was going to speak 5. --- I beg your pardon, but I didn’t quite catch you. --- Oh, I ______ myself. A. am talking to B. talked about C. have talked to D. was talking to 6. I ______ ping-pong quite well, but I haven’t had time to play since the New Year. A. will play B. have played
英语一共有多少种时态 时态是英语中一个重要的语法范畴，它表示不同时间发生的动作或存在的状态以及动作发生或存在的方式。动作发生的时间可分为现在、过去、将来和过去将来四种形式，动作发生的方式可分为一般、完成、进行和完成进行四种形式。将时间形式和动作方式结合起来，就构成了以下16种时态形式(以do为例)： 时态详解：一般现在时 1. 一般现在时的应用 (1)表示经常发生的动作或存在的状态。常用频度副词sometimes, often, always, usually, seldom及时间副词every day / night / week / month / year, in the morning, in the afternoon, in the evening, at night做状语。如：He often stays up late. 他常熬夜。 We go home every month. 我们每月都要回家。 I watch TV at night. 我晚上看电视。 (2)表示客观真理或永恒的状态。如：
The earth travels round the sun. 地球绕太阳旋转。 Trees turn green in spring. 春天树木变绿。 Liquid turns into gas when it is hot enough. 足够热时，液体变为气体。 Practice makes perfect. 熟能生巧。 (3)现阶段的状态。常跟时间副词now连用。如： He lives in Beijing now. 他现在住在北京。 She is at home. 她在家。 They work in that factory. 他们在那家工厂工作。 (4)习惯性的爱好或行为。如： I like dancing while she likes singing. 我喜欢跳舞，而她喜欢唱歌。 We get up at six. 我们六点起床。 He studies very hard. 他学习很刻苦。 (5)表示已经计划、安排好了或时间表上所安排，并且一定要做的事情。用于这种句型的动词主要是瞬间动词：come, go, leave, arrive, begin, start, stop, close, open等。如： The train arrives at five past eight and leaves at ten past eight. 火车八点过五分到，八点过十分离开。 Our class begins at 7:45. 我们的课七点四十五开始。 The shop opens at eight o’clock. 商店八点开门。 (6) 时间、条件、方式及让步状语从句中的谓语动词是将来的动作或状态时，用一般现在时表示。如： If you come, we will wait for you. 如果你来，我们就等你。 When he gets here, the work will be finished. 当他到这儿时，工作将做完了。 Though he disagrees with us, he will do as we decided. 尽管他不赞成我们当观点，他还是会按我们的决定去做。 (7) 在某些习惯表达法中，常用一般现在时表示已经发生过的动作或存在的状态。如： They say Wu Dong is ill. 据说吴东病了。