求初中英语语法!!

(最好简短些)

11. 动词的时态

11.1 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。

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11.2 一般过去时的用法

1)在确定的过去时间里所发生的动作或存在的状态。例如:时间状语有:yesterday, last week, an hour ago, the other day, in 1982等。例如:

Where did you go just now? 刚才你上哪儿去了?

2)表示在过去一段时间内,经常性或习惯性的动作。例如:

When I was a child, I often played football in the street. 我是个孩子的时候,常在马路上踢足球。

Whenever the Browns went during their visit, they were given a warm welcome.

那时,布朗一家无论什么时候去,都受到热烈欢迎。

3)句型:It is time for sb. to do sth "到……时间了" "该……了"。例如:It is time for you to go to bed. 你该睡觉了。

It is time that sb. did sth. "时间已迟了" "早该……了" ,例如It is time you went to bed. 你早该睡觉了。

would (had) rather sb. did sth. 表示'宁愿某人做某事'。例如:I'd rather you came tomorrow.还是明天来吧。

4) wish, wonder, think, hope 等用过去时,作试探性的询问、请求、建议等,而一般过去时表示的动作或状态都已成为过去,现已不复存在。例如:I thought you might have some. 我以为你想要一些。

比较:Christine was an invalid all her life.(含义:她已不在人间。)

Christine has been an invalid all her life.(含义:她现在还活着)

Mrs. Darby lived in Kentucky for seven years. (含义:达比太太已不再住在肯塔基州。)

Mrs. Darby has lived in Kentucky for seven years. (含义:现在还住在肯塔基州,有可能指刚离去)

注意: 用过去时表示现在,表示委婉语气。

1)动词want, hope, wonder, think, intend 等。例如:

Did you want anything else? 您还要些什么吗?

I wondered if you could help me. 能不能帮我一下。

2)情态动词 could, would。例如:

Could you lend me your bike? 你的自行车,能借用一些吗?

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11.3 used to / be used to

used to + do:"过去常常"表示过去习惯性的动作或状态,但如今已不存在。例如:

Mother used not to be so forgetful. 老妈过去没那么健忘。

Scarf used to take a walk. 斯卡夫过去常常散步。

be used to + doing: 对……已感到习惯,或"习惯于",to是介词,后需加名词或动名词。例如:
He is used to a vegetarian diet.

Scarf is used to taking a walk. 斯卡夫现在已习惯于散步了。

典型例题

---- Your phone number again? I ___ quite catch it.

---- It's 69568442.

A. didn't B. couldn't C. don't D. can't

答案A. 本句虽没有明确的时间状语,但从语意上看出,在听的时候没有听懂这个动作发生在过去,因此应用过去时。

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11.4 一般将来时

1) shall用于第一人称,常被will 所代替。will 在陈述句中用于各人称,在征求意见时常用于第二人称。例如:

Which paragraph shall I read first? 我先读哪一段呢?

Will you be at home at seven this evening? 今晚七点回家好吗?

2) be going to +不定式,表示将来。

a. 主语的意图,即将做某事。例如:What are you going to do tomorrow? 明天打算作什么呢?

b. 计划,安排要发生的事。例如:The play is going to be produced next month。这出戏下月开播。

c. 有迹象要发生的事。例如:Look at the dark clouds, there is going to be a storm. 看那乌云,快要下雨了。

3) be +不定式表将来,按计划或正式安排将发生的事。例如:

We are to discuss the report next Saturday.我们下星期六讨论这份报告。

4) be about to +不定式,意为马上做某事。例如:

He is about to leave for Beijing. 他马上要去北京。

注意:be about to do 不能与tomorrow, next week 等表示明确将来时的时间状语连用。

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11.5 be going to / will 用于条件句时,be going to表将来,will表意愿。例如:

If you are going to make a journey, you'd better get ready for it as soon as possible.

Now if you will take off your clothes, we will fit the new clothes on you in front of the mirror.

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11.6 be to和be going to

be to 表示客观安排或受人指示而做某事,be going to 表示主观的打算或计划。例如:

I am to play football tomorrow afternoon. 明天下午我去踢球。(客观安排)

I'm going to play football tomorrow afternoon. 明天下午我想去踢球。(主观安排)

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11.7 一般现在时表将来

1)下列动词come, go, arrive, leave, start, begin, return的一般现在时可以表示将来,主要用来表示在时间上已确定或安排好的事情。例如:

The train leaves at six tomorrow morning. 火车明天上午六点开。

When does the bus star? It stars in ten minutes. 汽车什么时候开?十分钟后。

2)以here, there等开始的倒装句,表示动作正在进行。例如:

Here comes the bus. = The bus is coming. 车来了。

There goes the bell. = The bell is ringing. 铃响了。

3)在时间或条件句中。例如:

When Bill comes (不是will come), ask him to wait for me. 比尔来后,让他等我。

I'll write to you as soon as I arrive there. 我到了那里,就写信给你。

4)在动词hope, take care that, make sure that等的宾语从句中。例如:

I hope they have a nice time next week. 我希望他们下星期玩得开心。

Make sure that the windows are closed before you leave the room. 离开房间前,务必把窗户关了。

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11.8 用现在进行时表示将来

下列动词come, go, arrive, leave, start, begin, return等现在进行时可以表示将来。例如:

I'm leaving tomorrow. 明天我要走了。

Are you staying here till next week? 你会在这儿呆到下周吗?返回动词的时态目录

11.9 现在完成时

现在完成时用来表示之前已发生或完成的动作或状态,其结果的影响现在还存在;也可表示持续到现在的动作或状态。其构成:have (has) +过去分词。

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11.10 比较一般过去时与现在完成时

1)一般过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作;现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是影响。

2)一般过去时常与具体的时间状语连用,而现在完成时通常与模糊的时间状语连用,或无时间状语。

一般过去时的时间状语:yesterday, last week,…ago, in1980, in October, just now等,皆为具体的时间状语。

现在完成时的时间状语:for, since, so far, ever, never, just, yet, till/until, up to now, in past years, always等,皆不确定的时间状语。

共同的时间状语:this morning, tonight, this April, now, already, recently, lately 等。

3)现在完成时可表示持续到现在的动作或状态,动词一般是延续性的,如live, teach, learn, work, study, know.。

一般过去时常用的非持续性动词有come, go, leave, start, die, finish, become, get married等。例如:

I saw this film yesterday. (强调看的动作发生过了)

I have seen this film. (强调对现在的影响,电影的内容已经知道了)

Why did you get up so early? (强调起床的动作已发生过了)

Who hasn't handed in his paper? (强调有卷子未交,疑为不公平竞争)

He has been in the League for three years. (在团内的状态可延续)

He has been a League member for three years. (是团员的状态可持续)

句子中如有过去时的时间副词(如yesterday, last, week, in 1960)时,不能使用现在完成时,要用过去时。

(错)Tom has written a letter to his parents last night.

(对)Tom wrote a letter to his parents last night.

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11.11 用于现在完成时的句型

1)It is the first / second time.... that…结构中的从句部分,用现在完成时。例如:

It is the first time that I have visited the city. 这是我第一次访问这城市。

This is the first time (that) I've heard him sing. 这是我第一次听他唱歌。

注意:It was the third time that the boy had been late.

2)This is +形容词最高级+that…结构,that 从句要用现在完成时。例如:

This is the best film that I've (ever) seen. 这是我看过的最好的电影。

典型例题

(1) ---Do you know our town at all?

---No, this is the first time I ___ here.

A. was B. have been C. came D. am coming

答案B. This is the first time 后面所加从句应为现在完成时,故选B。

(2) ---Have you ____ been to our town before?

---No, it's the first time I ___ here.

A. even, come B. even, have come C. ever, come D. ever, have come

答案D. ever意为曾经或无论何时,反意词为never,此两词常用于完成时。

注意:非延续性动词的否定形式可以与表示延续时间的状语连用。即动作不发生的状态是可以持续的。

(错)I have received his letter for a month.

(对)I haven't received his letter for almost a month.

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11.12 比较since和for

Since 用来说明动作起始时间,for用来说明动作延续时间长度。例如:
I have lived here for more than twenty years.我住在这儿二十多年了。
I have lived here since I was born. 我从出生起就住在这儿了。
注意:并非有for 作为时间状语的句子都用现在完成时。
I worked here for more than twenty years. (我现在已不在这里工作。)
I have worked here for many years.(现在我仍在这里工作。)
注意:用句型转换的方法,很容易排除非延续动词在有for/since结构的完成时中的误用。
1)(对) Tom has studied Russian for three years. = Tom began to study Russian three years ago, and is still studying it now.
2)(错) Harry has got married for six years. = Harry began to get married six years ago, and is still getting married now.
显然,第二句不对,它应改为 Harry got married six years ago. 或 Harry has been married for six years.

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11.13 since的四种用法

1) since +过去一个时间点(如具体的年、月、日期、钟点、1980, last month, half past six)。例如:

I have been here since 1989. 1989起,我一直在这儿。

2) since +一段时间+ ago。例如:

I have been here since five months ago. 我在这儿,已经有五个月了。

3) since +从句。例如:

Great changes have taken place since you left. 你走后,变化可大了。

Great changes have taken place since we were here. 我们走后,变化可大了。

4) It is +一段时间+ since从句。例如:

It is two years since I became a postgraduate student. 我考上研究生有两年了。

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11.14 延续动词与瞬间动词

1) 用于完成时的区别

延续动词表示经验、经历; 瞬间动词表示行为的结果,不能与表示段的时间状语连用。例如:

He has completed the work. 他已完成了那项工作。 (表结果)

I've known him since then. 我从那时起就认识他了。(表经历)

2) 用于till / until从句的差异

延续动词用于肯定句,表示"做……直到……" 瞬间动词用于否定句,表示"到……,才……"。例如:

He didn't come back until ten o'clock. 他到10 点才回来。

He slept until ten o'clock. 他一直睡到10点。

典型例题

1. You don't need to describe her. I ___ her several times.

A. had met B. have met C. met D. meet

答案B. 首先本题后句强调对现在的影响,我知道她的模样,你不用描述。再次,several times告知为反复发生的动作,因此用现在完成时。

2. ---I'm sorry to keep you waiting.

---Oh, not at all. I ___ here only a few minutes.

A. have been B. had been C. was D. will be

答案A. 等待的动作由过去开始,持续到现在,应用现在完成时。

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11.15 过去完成时

1) 概念:表示过去的过去

----|----------|--------|----> 其构成是had +过去分词构成。

那时以前 那时 现在

2) 用法

a. 在told, said, knew, heard, thought等动词后的宾语从句。例如:

She said (that)she had never been to Paris. 她告诉我她曾去过巴黎。

b. 状语从句

在过去不同时间发生的两个动作中,发生在先,用过去完成时;发生在后,用一般过去时。例如:

When the police arrived, the thieves had run away. 警察到达时,小偷们早就跑了。

c. 表示意向的动词,如hope, wish, expect, think, intend, mean, suppose等,用过去完成时表示"原本…,未能…"。例如:

We had hoped that you would come, but you didn't. 那时我们希望你能来,但是你没有来。

3) 过去完成时的时间状语before, by, until , when, after, once, as soon as。例如:

He said that he had learned some English before. 他说过他以前学过一些英语。
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八种时态的具体用法:
一般现在时 表示现阶段经常或习惯发生的动作或存在的状态,或说明主语的特征。
① 一般现在时句子中常有的时间状语:often,usually,sometimes,always,every (day等), once/twice,a (week等), on (Sunday等),never,in the (morning等)。如:They go to the Palace Museum once a year.(他们每年去一次故宫)/ They often discuss business in the evening.(他们经常在晚上商谈生意)
② 表示客观真理、事实、人的技能或现在的状态时句子里一般不用时间状语。如:The earth turns round the sun.(地球绕着太阳转)/ Light travels faster than sound.(光传播比声音快)
③ 表示十分确定会发生(如安排好的事情)或按照时间表进行的事情,用一般现在可以表达将来,句子中可以有将来时间。如:The train for Haikou leaves at 8:00 in the morning.(开往汉口的列车上午8点开车)
④ 在时间状语从句中(以when, after, before, while, until, as soon as等引导)和条件状语从句中(以if,unless引导),用一般现在时代替一般将来时,句子可以有将来时间。如:Please ring me up as soon as you arrive in Germany.(你一到德国就给我打电话) / If it rains tomorrow,we will have to stay at home.(如果明天下雨我们就只好呆在家)
⑤ 一般现在时用于倒装句中可以表示正在发生的动作,动词以come, go为主。如:Here comes the bus. (车来了) / There goes the bell.(铃响了)。
⑥ 一般现在时常用于体育比赛的解说或寓言故事中。Now the midfield player catches the ball and he keeps it.
⑦ 人的心理活动和感官动作一般用一般现在时而不用现在进行时表达,常见动词有:like, love, hate, dislike, want, wish, hope, think(认为),understand, remember, forget, mean, need, hear, feel, see. 如:I think it is going to snow.(我想天要下雪了)/ I really hope you can enjoy your stay here.(我真的希望你愉快地呆在这儿)
一般过去时 表示过去某时发生的动作或状态,这种动作或状态可能是一次性,也可能经常
发生。
① 表示过去具体时刻发生的一次性动作时,时间状语有:at (eight) (yesterday morning),(ten minutes) ago, when引导的时间状语从句。如:I got up at 6:00 this morning.(我是早上六点钟起床的)/ Little Tom broke the window at half past nine this morning.(小汤姆今天早上九点半把窗子打破了)/ When he went into the room,he saw a stranger talking with his father.(他走进房间时发现一个陌生人正和他父亲谈话)
② 表示过去一段时间内不知何时发生的一次性动作时,时间状语有:yesterday, last (year等), in (1998 等)。如:He came to our city in the year 2000.(他2000年来到我们市)
③ 表示过去一个阶段中经常发生的事情时,时间状语有:last…, in…, from…to…, for(10 years),often,usually, sometimes, always, never等。如:Mr Jackson usually went to evening schools when he was young. / Every day he went to the rich man and borrowed books from him.
④ 讲故事、对过去经历的回忆、双方都明白的过去事件等一般用过去时,而且经常省略时间状语。如:I happened to meet Rose in the street.(我正好在街上遇到露西)
一般将来时 表示将来某一时刻或经常发生的动作或状态。
①一般将来时的时间状语有:tomorrow,this (afternoon),next (year),one day,now,soon,
someday,sometime, in the future, when引导的从句等。
② 用will构成的将来时,表示动作与人的主观愿望无关。“shall”用于第一人称,“will”
用于所有人称。如:I will graduate from this school soon.(我很快就要从这所中学毕业了)/ You will stay alone after I leave.(我走了之后你就要一个人过了)
③ “am/is/are going to+动词原形”表示打算或准备要做的事情,或者主观判断即将要发生的事情,而“am/is/are to +动词原形”表示安排或计划中的动作。如:A man told them that the woman was to give birth to the special baby.(有一个人告诉他们那个妇女就会生下那个特别的男孩)/ It’s going to rain soon.(天快要下雨了)
④ 表示一个人临时决定要做某事,可以用will表达。如:I will go to the lab to get some
chemicals(化学药剂). So please wait until I return.(我要到化学实验室去取些药品,请等我回头)
⑤ 现在进行时、一般现在时也可以表示将来。(见相应时态)
⑥ shall和will 在口语的一些疑问句中相当于情态动词。Shall一般与第一人称连用,will与第二人称连用。如:Shall we go to the zoo next Saturday?(我们下周六去动物园好吗?)/ Will you please open the door for me?(替我把门打开好吗?)
⑦ “be to +动词原形”表示按照计划将要发生的事情。如:An angel came to tell her that she was to have this special boy.

(4)现在进行时 现在进行时表示现在正在进行的动作或是现阶段正发生而此刻不一定在进行的动作。
① 现在进行时由“助动词be (am is are ) +现在分词”构成。
② 现在进行时的时间状语有: now, this …, these…等,但经常不用。如:What are you doing up in the tree?(你在树上干什么?)/ I am writing a long novel these days.(我最近在写一本长篇小说)
③ 表示即将发生的动作,一般指近期安排好的事情。常见的动词有:come, go, stay, leave, spend, do等。如:I’m coming now.(我就来)/ What are you doing tomorrow?(你明天干什么?)/ He is leaving soon.(他就要走了)
④ 表示频繁发生或反复进行的动作,常与always等频度副词连用,以表示赞扬、不满或讨厌等感情色彩。如:He is always borrowing money from me and forgetting all about it some time later.(他老是向我借钱,过一些时候就忘得一干二净)

(5)过去进行时 过去进行时表示过去某一时刻或某阶段正在进行的动作。
① 过去进行时由“was(第一、三人称单数)或were(第二人称单数和各人称的复数)+现在分词”构成。
② 过去进行时的时间状语有:then, at that time, this time yesterday, at (eight) yesterday (morning),(a year) ago, 以及由when引出的时间状语从句。如:He was cooking supper this time yesterday.(昨天这个时候他正在做晚饭)/ The little girl was playing with her toy when I saw her.(我看到小女孩的时候她正在玩玩具)
③ 用于宾语从句或时间状语从句中,表示与主句动作同时进行而且是延续时间较长。句子中通常不用时间状语。如:She was it happen when she was walking past.(她路过时看到事情的发生)/ They sang a lot of songs while they were walking in the dark forest.(他们在黑暗的森林里走时唱了很多歌)
④ 也可以表示过去一个阶段频繁发生或反复进行的动作,常与always等频度副词连用,以表示赞扬、不满或讨厌等感情色彩。如:He was always borrowing money from me when he lived here.(他住在这里时老向我借钱)

(6)现在完成时 现在完成时表示一个发生在过去的、对现在仍有影响的动作,或表示开始在过去,并且一直延续到现在,甚至还可能延续下去的动作。
①在完成时由“助动词have (has)+动词的过去分词”构成。
②表示发生在过去的对现在仍有影响的动作时,时间状语有:already, yet, just, once, twice,ever, never,three times, before等。如:I have never seen such fine pictures before. (我以前从来没有看过这么好的画)/ He has just gone to England.(他刚去英国)
③表示在过去开始一直延续到现在(可能延续下去)的动作或状态时,时间状语有:for (two years),since 1990, since (two weeks ago)和since引导的状语从句。如:I have been away from my hometown for thirty years.(我离开家乡有30年了)/ Uncle Wang has worked in the factory since it opened.(自从这家工厂开张,王叔叔一直在那儿工作)
④口语中have got往往表示have(有)的意思。如:They have got thousands of books in their library.(他们图书馆有上万本书)
⑤have been to与have gone to的区别:have gone to(“已经去了”)表示人不在这里,have been to(“去过”)表示人在这里。如:--Where is Mr Li? –He has gone to the UK.(李先生在哪里?他去了英国。)/ --Do you know something about Beijing? –Yes,I have been to Beijing three times. (你知道北京的情况吗?是的,我去过那里三次。)
⑥在完成时中,一个瞬间性动词(一次性动作)不能与表示一段时间的状语连用,此时须将该瞬间动词改为延续性动词或状态动词。具体变化见下表:

瞬间性动词的完成时 → 延续性动词或状态动词的完成时
have (already) gone to… have been in / at … for (two years)
has come to… has been here since (1990)
(had) left… (had) been away from…
arrived… been in…
died been dead
begun been on
ended been over
bought... had…
borrowed… kept…
joined… been in …
或者使用下面这个句型:
It is / has been + (多久)+ since + 主语(人)+谓语(过去时)+……+过去时间状语
[注意] 在其它的时态中也存在类似问题,记住,关键是:瞬间动词不能和表达一段时间的状语连用。如:How long may I keep the book?(这本书我能借多久?)(句子中keep取代了borrow)
(7) 过去完成时 过去完成时表示过去某一时间或某一动作发生之前已经完成的动作。简言之, 过去完成时所表示的时间是“过去的过去”。
①过去完成时由“助动词had+动词的过去分词”构成。
②过去完成时时间状语有:by (yesterday), by then, by the end of (last…)或者由when,before等引出状语从句。有时句子中会有already, just, once, ever, never等词语,也会有for… 或since…构成的时间状语。如:They had already finished cleaning the classroom when their teacher came.(当老师来的时候他们已经打扫完了教室)/ The woman had left before he realized she was a cheat.(在他发觉那个妇女是个骗子时她已经走掉了)
③过去完成时常用于宾语从句中、after引导的从句中,或者从句是before引导的主句中。如:After I had put on my shoes and hat,I walked into the darkness.(我穿上鞋子戴上帽子走进了黑暗之中)/ He said that he had never seen a kangaroo before.(他说他以前从来没有见过袋鼠)
(8) 过去将来时 过去将来时表示在过去预计将要发生的动作或存在的状态。
①过去将来时由“助动词should(第一人称)或would(第二、三人称)+动词原形”构成。在美国英语中,过去将来时的助动词一律用“would +动词原形”。
②过去将来时常由于宾语从句中,时间状语有:later, soon, the next (day).
③在时间状语从句和条件状语从句中不可以使用过去将来时,而应该使用一般过去时。如:He promised that he would pay me a lot if I helped him with the project.(他答应付给我许多钱如果我帮助他搞那个项目)/ Every time when he was free,he would sit down and read some books.(每次只要他有空他就会坐下来看看书)
④表示纯粹的将来时用would或should,表示打算或主观认为的事情用was/were going to (+动词原形)。如:She told me she would be 18 the next month.(她告诉我她下个月就18岁了)/ She told me that she was going to have a walk with her pet dog.(她告诉我她打算带她的宠物狗去散步)
⑤过去将来时还可以表示一个过去经常性的动作。如:When it rained in the day, he would bring an umbrella with him.(白天下雨时他会随身带一把雨伞)
(9)现在完成进行时:现在完成进行时指一个从过去就开始一直延续到现在并由可能继续下去的动作,它具有现在完成时和现在进行时双重特征,结构是:“have/has + been +动词的现在分词”。如:I have been swimming in the cold water for about two hours.(我已经在冰冷的水里游了将近两个小时)/ How long have you been waiting here?(你在这里一直等了多久?)
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