2007年高考语法讲义(十一)动词的时态
一、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。
二、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?
三、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。
四、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。
五、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.
六、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)
七、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。
八、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?
九、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。
十、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.
十一、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.
十二、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.
十三、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。
十四、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。
十五、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。
By the time he was twelve, Edison had began to make a living by himself. 到了十二岁那年,爱迪生开始自己谋生。
Tom was disappointed that most of the guests had left when he arrived at the party.
汤姆失望了,因为他到达晚会时,大部分客人已经走了。
典型例题
The students ___ busily when Miss Brown went to get a book she ___ in the office.
A. had written, left B,were writing, has left C. had written, had left D. were writing, had left
答案D. "把书忘在办公室"发生在"去取书"这一过去的动作之前,因此"忘了书"这一动作发生在过去的过去,用过去完成时。句中when表示的是时间的一点,表示在"同学们正忙于……"这一背景下,when所引导的动作发生。因此前一句应用过去进行时。
注意: had hardly… when 还没等…… 就……。例如:
I had hardly opened the door when I he hit me. 我刚打开门,他就打了我。
had no sooner…than 刚…… 就……。例如:
He had no sooner bought the car than he sold it. 他刚买了这辆车,转眼又卖了。
十六、用一般过去时代替过去完成时
1、两个动作如按顺序发生,又不强调先后,或用then,and,but 等连词时,多用一般过去时。例如:
When she saw the mouse,she screamed. 她看到老鼠,就叫了起来。
My aunt gave me a hat and I lost it. 姑妈给了我一顶帽子,我把它丢了。
2、两个动作相继发生,可用一般过去时;如第一个动作需要若干时间完成,用过去完成时。例如:
When I heard the news, I was very excited.
3、叙述历史事实,可不用过去完成时,而只用一般过去时。例如:
Our teacher told us that Columbus discovered America in 1492.
十七、将来完成时
1、构成will have done
2、概念
a. 状态完成:表示某事继续到将来某一时为止一直有的状态。例如:
They will have been married for 20 years by then. 到那时他们结婚将有二十年了。
b. 动作完成:表示将来某一时或另一个将来的动作之前,已经完成的动作或获得的经验。例如:
You will have reached Shanghai by this time tomorrow. 明天此时,你已经到达上海了。
十八、现在进行时
现在进行时的基本用法:
a. 表示现在(指说话人说话时)正在发生的事情。例如:
We are waiting for you. 我们正在等你。
b. 习惯进行:表示长期的或重复性的动作,说话时动作未必正在进行。例如:
Mr. Green is writing another novel. 他在写另一部小说。(说话时并未在写,只处于写作的状态。)
c. 表示渐变,这样的动词有:get, grow, become, turn, run, go, begin等。例如:
The leaves are turning red. 叶子在变红。
It's getting warmer and warmer. 天越来越热了。
d. 与always, constantly, forever 等词连用,表示反复发生的动作或持续存在的状态,往往带有说话人的主观色彩。例如:
You are always changing your mind. 你老是改变主意。
典型例题
My dictionary ___, I have looked for it everywhere but still___ it.
A. has lost, don't find B. is missing, don't find C. has lost, haven't found D. is missing, haven't found.
答案D. 前句是一个仍在持续的状态,应用进行时,由于没有找到,其影响仍然存在,应用完成时,瞬间动词用于否定式时可用于完成时。
十九、不用进行时的动词
1、表示事实状态的动词,如have, belong, possess, cost, owe, exist, include, contain, matter, weigh, measure, continue等。例如:I have two brothers. 我有两兄弟。
This house belongs to my sister. 这房子是我姐的。
2、表示心理状态的动词,如know, realize, think see, believe, suppose, imagine, agree, recognize, remember, want, need, forget, prefer, mean, understand, love, hate等。例如:I need your help. 我需要你的帮助。
He loves her very much. 他爱她很深。
3、瞬间动词,如accept, receive, complete, finish, give, allow, decide, refuse等。例如:
I accept your advice. 我接受你的劝告。
4、系动词,如seem, remain, lie, see, hear, smell, feel, taste, get, become, turn等。例如:
You seem a little tired. 你看上去有点累。
二十、过去进行时
1、概念:表示过去某时正在进行的状态或动作。
2、过去进行时的主要用法是描述一件事发生的背景;一个长动作延续的时候,另一个短动作发生。
3、常用的时间状语有this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while等。例如:
My brother fell while he was riding his bicycle and hurt himself. 我兄弟骑车时摔了下来,受了伤。
It was raining when they left the station. 他们离开车站时,正下着雨。
When I got to the top of the mountain, the sun was shining. 我到达山顶时,阳光灿烂。
典型例题
1) Mary ___ a dress when she cut her finger.
A. made B. is making C. was making D. makes
答案C. 割伤手指是已发生的事情,应用过去时。同时,when表时间的同时性,"玛丽在做衣服时"提供事情发生的背景,因此用过去进行时。
2) As she ___ the newspaper, Granny ___ asleep.
A. read;was falling B. was reading; fell C. was reading; was falling D. read;fell
答案B.句中的as = when, while,意为"当……之时"。描述一件事发生的背景时,用过去进行;一个长动作发生的时候,另一个短动作发生。句意为 "在她看报纸时,奶奶睡着了。"句中的 fell(fall的过去时),是系动词,后跟形容词,如:fall sick。
二十一、将来进行时
1、概念:表示将来某时进行的状态或动作,或按预测将来会发生的事情。例如:
She'll be coming soon. 她会很快来的。
I'll be meeting him sometime in the future. 将来我一定去见他。
注意:将来进行时不用于表示"意志",不能说 I'll be having a talk with her.
2、常用的时间状语有soon, tomorrow, this evening,on Sunday, by this time,tomorrow, in two days, tomorrow evening等。例如:By this time tomorrow, I'll be lying on the beach. 明天此时,我正躺在海滩上呢。
二十二、一般现在时代替一般将来时
When, while, before, after, till, once, as soon as, so long as, by the time, if, in case (that), unless, even if, whether, the moment, the minute, the day, the year, immediately等引导的时间状语从句,条件句中,用一般现在时代替将来时。例如:
He is going to visit her aunt the day he arrives in Beijing. 他一到北京,就去看他姨妈。
典型例题
(1)He said he________me a present unless I_______ in doing the experiment.
A. had not given; had not succeeded B. would not give; succeeded
C. will not give; succeed D. would not give; will succeed.
答案B. 在时间,条件或让步主语从句中一般不用将来时。本题有He said,故为过去式。主句用将来时,故选B. 此处用一般过去式代替了过去将来时。
(2) 表示现在已安排好的未来事项,行程等活动。例如:
The museum opens at ten tomorrow. 博物馆明天10点开门。(实际上每天如此。)
二十三、一般现在时代替一般过去时
1、"书上说","报纸上说"等。例如:
The newspaper says that it's going to be cold tomorrow. 报纸上说明天会很冷的。
2、叙述往事,使其生动。例如:
Napoleon's army now advances and the great battle begins.拿破仑的军队正在向前挺进,大战开始了。
二十四、一般现在时代替现在完成时
1、有些动词用一般现在时代替完成时,如hear, tell, learn, write , understand, forget, know, find , say, remember等。例如:
I hear (= have heard) he will go to London. 我听说了他将去伦敦。
I forget (=have forgotten) how old he is. 我忘了他多大了。
2、用句型 " It is … since…"代替"It has been … since …"。例如:
It is (= has been) five years since we last met. 从我们上次见面以来,五年过去了。
二十五、一般现在时代替现在进行时。
在Here comes…/There goes…等句型里,用一般现在时代替现在进行时。例如:
There goes the bell. 铃响了。
二十六、现在进行时代替将来时
1、表示即将发生的或预定中计划好的活动。例如:
Are you staying with us this weekend 和我们一起度周末好吗
We are leaving soon. 我们马上就走。
2、渐变动词,如get, run, grow, become, begin以及瞬间动词die等。例如:
He is dying. 他要死了。
二十七、时态一致
1、如果从句所叙述的为真理或相对不变的事实,则用现在时。例如:
At that time, people did not know that the earth moves. 那时,人们不知道地球是动的。
He told me last week that he is eighteen. 上星期他告诉我他十八岁了。
2、宾语从句中的,助动词ought, need, must, dare 的时态是不变的。例如:
He thought that I need not tell you the truth. 他认为我不必告诉你真相。
二十八、时态与时间状语
时态 时间状语
一般现在时 every…, sometimes, at…, on Sunday等
一般过去时 yesterday, last week, an hour ago, the other day, in 1982, just now等
一般将来时 next…, tomorrow, in+一段时间, before+时间点等
现在完成时 for, since, so far, ever, never, just, yet, till/until, up to now, in past years, always, recently等
过去完成时 before, by+过去的时间, until, when, after, once等
过去进行时 this morning, the whole morning, all day, yesterday, from nine to ten last evening… when, while等
将来进行时 soon, tomorrow, this evening, on Sunday, by this time, tomorrow, in two days, tomorrow evening
2007年高考语法讲义(五)动词动词
一、系动词
系动词亦称联系动词(Link Verb),作为系动词,它本身有词义,但不能单独用作谓语,后边必须跟表语(亦称补语),构成系表结构说明主语的状况、性质、特征等情况。说明:有些系动词又是实义动词,该动词表达实义时,有词义,可单独作谓语。例如:
He fell ill yesterday. 他昨天病了。(fell是系动词,后跟补足语,说明主语情况。)
He fell off the ladder. 他从梯子上摔下来。fell是实义动词,单独作谓语。
1、状态系动词
用来表示主语状态,只有be一词。例如:
He is a teacher. 他是一名教师。(is与补足语一起说明主语的身份。)
2、持续系动词
用来表示主语继续或保持一种状况或态度,主要有keep, rest, remain, stay, lie, stand。例如:
He always kept silent at meeting. 他开会时总保持沉默。
This matter rests a mystery. 此事仍是一个谜。
3、表像系动词
用来表示"看起来像"这一概念,主要有seem, appear, look。例如:
He looks tired. 他看起来很累。
He seems (to be) very sad. 他看起来很伤心。
4、感官系动词
感官系动词主要有feel, smell, sound, taste。 例如:
This kind of cloth feels very soft. 这种布手感很软。
This flower smells very sweet. 这朵花闻起来很香。
5、变化系动词
这些系动词表示主语变成什么样,变化系动词主要有become, grow, turn, fall, get, go, come, run。例如:
He became mad after that. 自那之后,他疯了。
She grew rich within a short time. 她没多长时间就富了。
6、终止系动词
表示主语已终止动作,主要有prove, turn out, 表达"证实","变成"之意。例如:
The rumor proved false. 这谣言证实有假。
The search proved difficult. 搜查证实很难。
His plan turned out a success. 他的计划终于成功了。(turn out表终止性结果)
二、助动词
1、协助主要动词构成谓语动词的词叫助动词。被协助的动词称作主要动词。助动词自身没有词义,不可单独使用。例如:
He doesn't like English. 他不喜欢英语。
(doesn't是助动词,无词义;like是主要动词,有词义)
2、助动词协助主要动词完成以下功用,可以用来:
a. 表示时态。例如:
He is singing. 他在唱歌。
He has got married. 他已结婚。
b. 表示语态。例如:
He was sent to England. 他被派往英国。
c. 构成疑问句。例如:
Do you like college life 你喜欢大学生活吗?
Did you study English before you came here 你来这儿之前学过英语吗?
d. 与否定副词not合用,构成否定句。例如:
I don't like him. 我不喜欢他。
e. 加强语气。例如:
Do come to the party tomorrow evening. 明天晚上一定来参加晚会。
He did know that. 他的确知道那件事。
3、最常用的助动词有:be, have, do, shall, will, should, would等。
三、助动词be的用法
1、be +现在分词,构成进行时态。例如:
They are having a meeting. 他们正在开会。
English is becoming more and more important. 英语现在越来越重要。
2、be + 过去分词,构成被动语态。例如:
The window was broken by Tom.. 窗户是汤姆打碎的。
English is taught throughout the world. 世界各地都教英语。
3、be + 动词不定式,可表示下列内容:
a. 表示最近、未来的计划或安排。例如:
He is to go to New York next week.. 他下周要去纽约。
We are to teach the freshmen. 我们要教新生。
说明: 这种用法也可以说成是一种将来时态表达法。
b. 表示命令。例如:
You are to explain this. 对此你要做出解释。
He is to come to the office this afternoon. 要他今天下午来办公室。
c. 征求意见。例如:
How am I to answer him 我该怎样答复他?
Who is to go there 谁该去那儿呢?
d. 表示相约、商定。例如:
We are to meet at the school gate at seven tomorrow morning. 我们明天早晨7点在校门口集合。
四、助动词have的用法
1、have +过去分词,构成完成时态。例如:
He has left for London. 他已去了伦敦。
By the end of last month, they had finished half of their work. 上月未为止,他们已经完成工作的一半。
2、have + been +现在分词,构成完成进行时。例如:
I have been studying English for ten years. 我一直在学英语,已达十年之久。
3、have +been +过去分词,构成完成式被动语态。例如:
English has been taught in China for many years. 中国教英语已经多年。
五、助动词do 的用法
1、构成一般疑问句。例如:
Do you want to pass the CET 你想通过大学英语测试吗?
Did you study German 你们学过德语吗?
2、do + not 构成否定句。例如:
I do not want to be criticized. 我不想挨批评。
He doesn't like to study. 他不想学习。
In the past, many students did not know the importance of English.
过去,好多学生不知道英语的重要性。
3、构成否定祈使句。例如:
Don't go there. 不要去那里。
Don't be so absent-minded. 不要这么心不在焉。
说明: 构成否定祈使句只用do,不用did和does。
4、放在动词原形前,加强该动词的语气。例如:
Do come to my birthday party. 一定来参加我的生日宴会。
I did go there. 我确实去那儿了。
I do miss you. 我确实想你。
5、用于倒装句。例如:
Never did I hear of such a thing. 我从未听说过这样的事情。
Only when we begin our college life do we realize the importance of English. 进了大学以后,我们才认识到英语的重要性。
说明: 引导此类倒装句的副词有never, seldom, rarely, little, only, so, well等。
6、用作代动词。例如:
---- Do you like Beijing --你喜欢北京吗?
---- Yes, I do. --是的,喜欢。(do用作代动词,代替like Beijing.)
He knows how to drive a car, doesn't he 他知道如何开车,对吧?
六、助动词shall和will的用法
shall和will作为助动词可以与动词原形一起构成一般将来时。例如:
I shall study harder at English. 我将更加努力地学习英语。
He will go to Shanghai. 他要去上海。
说明:在过去的语法中,语法学家说shall用于第一人称,will 只用于第二、第三人称。现在,尤其是在口语中,will常用于第一人称,但shall只用于第一人称,如用于第二、第三人称,就失去助动词的意义,已变为情态动词,试比较:
He shall come. 他必须来。(shall有命令的意味。)
He will come. 他要来。(will只与动词原形构成一般将来时。)
七、助动词should, would的用法
1、should无词义,只是shall的过去形式,与动词原形构成过去将来时,只用于第一人称。例如:
I telephoned him yesterday to ask what I should do next week. 我昨天给他打电话,问他我下周干什么。
比较:"What shall I do next week " I asked. "我下周干什么?"我问道。
可以说,shall变成间接引语时,变成了should。
2、would也无词义,是will的过去形式,与动词原形构成过去将来时,用于第二、第三人称。例如:
He said he would come. 他说他要来。
比较:"I will go," he said. 他说:"我要去那儿。"变成间接引语,就成了He said he would come。原来的will变成would,go变成了come.。
八、短语动词
动词加小品构成的起动词作用的短语叫短语动词。例如:
Turn off the radio. 把收音机关上。(turn off是短语动词)
短语动词的构成基本有下列几种:
1)动词+副词,如:black out;
2)动词+介词,如:look into;
3)动词+副词+介词,如:look forward to。构成短语动词的副词和介词都统称为小品词。
九、非谓语动词
在句子中充当除谓语以外的句子成分的动词形式叫做非谓语动词。非谓语动词分为三种形式:不定式,动名词,和分词(分词包括现在分词和过去分词)。
1、不定式
时态\语态 主动 被动
一般式 to do to be done
完成式 to have done to have been done
2、动名词
时态\语态 主动 被动
一般式 doing being done
完成式 having done having been done
3、分词
时态\语态 主动 被动
一般式 doing being done
完成式 having done having been done
否定形式: not +不定式, not + 动名词, not + 现在分词2007年高考语法讲义(六)动名词
动名词是非限定动词的一种形式,由动词原形+ing构成。它既有动词的特征,又有名词的特征,故称。动名词也有时态和语态的变化,如表所示(以及物动词write为例),不及物动词没有语态的变化。
时态/语态 主动 被动
一般式 writing being written
完成式 having written having been written
一、动名词作主语、宾语和表语
1、作主语。例如:
Fighting broke out between the South and the North. 南方与北方开战了。
2、作宾语
a. 有些动词可以用动名词作宾语。例如:
admit 承认 appreciate 感激 avoid 避免 complete完成 consider认为 delay 耽误
deny 否认 detest 讨厌 endure 忍受 enjoy 喜欢 escape 逃脱 fancy 想象
finish 完成 imagine 想象 mind 介意 miss 想念 postpone推迟 practice 训练
recall 回忆 resent 讨厌 resume 继续 resist 抵抗 risk 冒险 suggest 建议
face 面对 include 包括 stand 忍受 understand 理解 forgive 宽恕 keep 继续
例如:Would you mind turning down your radio a little, please 你把收音机音量调小一点,好吗
The squirrel was lucky that it just missed being caught. 这松鼠幸运得很,刚逃避了被逮住的厄运。
b. 有些结构后面可以用动名词作宾语或其他成分。例如:
admit to prefer…to be used to lead to devote oneself to object to
stick to no good no use be fond of look forward to be proud of
be busy can't help be tired of be capable of be afraid of think of
burst out keep on insist on count on set about
put off be good at take up give up be successful in
3、作表语,对主语说明、解释。例如:
Her job is washing, cleaning and taking care of the children. 她的工作是洗刷、清扫和照顾孩子。
比较:She is washing, cleaning and taking care of the children.
4、作定语,一般表示所修饰名词事物的用途。例如:
a writing desk=a desk for writing 写字台
a swimming pool=a pool swimming 游泳池
有些动名词作定语,与所修饰的名词关系比较复杂。例如:
boiling point=a temperature point at which something begins to boil 沸点
a walking tractor=a tractor which a driver can operate while he or she is walking behind it 手扶拖拉机
二、worth 的用法
worth, worthy, worthwhile都是形容词,意为"值得"。
1. worth: be worth + n. 当名词为金钱时,表示"…… 值得……"
常见的有It ’s worth while to do./ It ’s worth(someone’s)while doing
be worth doing sth. "……某事值得被做"
The question is not worth discussing again and again. 这问题不值得反复讨论。
2. worthy:be worthy of +n. 当名词为抽象名词时表示"……值得……"
be worthy to be done "某事值得被做"
The question is not worthy to be discussed again and again.
3. worthwhile: be worthwhile to do sth "值得做某事"
It is worthwhile to ask him to join the club.值得邀请他加入俱乐部。
典型例题
It is not ____ to discuss the question again and again.
A. worth B. worthy C. worthwhile D. worth while
答案C. 由worth的用法可知,此句只适合词组be worthwhile to do sth.。选C。2007年高考语法讲义(八)特殊动词精讲
一、stop doing/to do
stop to do 停止,中断做某事后去做另一件事,stop doing 停止做某事。例如:
They stop to smoke a cigarette. 他们停下来,抽了根烟。
I must stop smoking. 我必须戒烟了。
典型例题
She reached the top of the hill and stopped ___ on a big rock by the side of the path.
A. to have rested B. resting C. to rest D. rest
答案:C。由题意可知,她到了山顶,停下来在一个路边的大石头上休息。因此,应选择"stop to do sth. 停下来去做另一件事"。而不仅仅是爬山动作的终止,所以stop doing sth.不正确。
二、forget doing/to do
forget to do 忘记要去做某事,forget doing 忘记做过某事。例如:
The light in the office is stil on. He forgot to turn it off. 办公室的灯还在亮着,他忘记关了。(没有做关灯的动作)
He forgot turning the light off. 他忘记他已经关了灯了。(已做过关灯的动作)
典型例题
---- The light in the office is still on.
---- Oh,I forgot___.
A. turning it off B. turn it off C. to turn it off D. having turned it off
答案:C。由the light is still on 可知灯亮着,即关灯的动作没有发生,因此用forget to do sth.而forget doing sth表示灯已经关上了,而忘记了这一事实。此处不符合题意。
三、remember doing/to do
remember to do 记得去做某事,remember doing 记得做过某事。例如:
Remember to go to the post office after school. 记着放学后去趟邮局。
Don't you remember seeing the man before 你不记得以前见过那个人吗
四、regret doing/to do
regret to do 对将要做的事遗憾,regret doing 对做过的事遗憾、后悔。例如:
I regret to have to do this, but I have no choice. 我很遗憾必须这样去做,我实在没有办法。
I don't regret telling her what I thought. 我不为告诉她我的想法而后悔。
典型例题
---You were brave enough to raise objections at the meeting.
---Well, now I regret ___ that.
A. to do B. to be doing C. to have done D. having done
答案:D。regret having done sth. 对已发生的事感到遗憾。regret to do sth. 对将要做的事感到遗憾。本题为对已说的话感到后悔,因此选D。
五、cease doing/to do
cease to do 长时间,甚至永远停做某事,cease doing 短时停止做某事,以后还会接着做。例如:
That department has ceased to exist forever. 那个系已不复存在。
The girls ceased chatting for a moment when their teacher passed by. 姑娘们在老师走过时,停了会聊天。
六、try doing/to do
try to do 努力,企图做某事,try doing 试验,试着做某事。例如:
You must try to be more careful. 你可要多加小心。
I tried gardening but didn't succeed. 我试着种果木花卉,但未成功。
七、go on doing/to do
go on to do 做了一件事后,接着做另一件事,go on doing 继续做原来做的事。例如:
After he had finished his maths,he went on to do his physics. 做完数学后,他接着去做物理。
Go on doing the other exercise after you have finished this one. 作完这个练习后,接着做其他的练习
八、be afraid doing/to do
be afraid to do 不敢,胆怯去做某事,是主观上的原因不去做,意为"怕",be afraid of doing 担心出现doing的状况、结果。doing 是客观上造成的,意为"生怕,恐怕"。例如:
She was afraid to step further in grass because she was afraid of being bitten by a snake.
她生怕被蛇咬着,不敢在草丛中再走一步。
She was afraid to wake her husband. 她不敢去叫醒她丈夫。
She was afraid of waking her husband. 她生怕吵醒她丈夫。
九、be interested doing/to do
interested to do 对做某事感兴趣,想了解某事,interested in doing 对某种想法感兴趣,doing 通常为想法。例如:
I shall be interested to know what happens. 我很想知道发生了什么事。(想了解)
I'm interested in working in Switzerland. Do you have any idea about that
我对在瑞士工作感兴趣。你想过这事吗 (一种想法)
十、mean to doing/to do
mean to do 打算、想,mean doing 意味着。例如:
I mean to go, but my father would not allow me to. 我想去,但是我父亲不肯让我去。
To raise wage means increasing purchasing power. 增加工资意味着增加购买力。
十一、begin(start) doing/to do
begin / start to do sth /begin / start doing sth.
1) 谈及一项长期活动或开始一种习惯时,使用doing。例如:
How old were you when you first started playing the piano 你几岁时开始弹钢琴?
2) begin, start用进行时时,后面动词用不定式to do。例如:
I was beginning to get angry。我开始生起气来。
3) 在attempt, intend, begin, start 后接know, understand, realize这类动词时,常用不定式to do。例如:
I begin to understand the truth。我开始明白真相。
4) 事物作主语时。例如:
The snow began to melt.雪开始融化了
十二、感官动词 + doing/to do
感官动词 see, watch, observe, notice, look at, hear, listen to, smell, taste, feel + do表示动作的完整性,+doing 表示动作的进行性。例如:
I saw him work in the garden yesterday. 昨天我看见他在花园里干活了。(强调"我看见了"这个事实)
I saw him working in the garden yesterday.(强调"我见他正干活"这个动作)昨天我见他正在花园里干活。
典型例题
1)They knew her very well. They had seen her ___ up from childhood.
A. grow B. grew C. was growing D. to grow
答案:A。因题意为,他们看着她长大,因此强调的是成长的过程,而非正在长的动作,因此用see sb do sth 的句型。
2)The missing boy was last seen ___ near the river.
A. playing B. to be playing C. play D. to play
答案A. 本题强调其动作,正在河边玩,应此用see sb. doing sth句型。2007年高考语法讲义(十)独立主格
一、独立主格
独立主格结构的构成:名词(代词)+现在分词、过去分词;
名词(代词)+形容词;
名词(代词)+副词;
名词(代词)+不定式;
名词(代词) +介词短语构成。
独立主格结构的特点:
1)独立主格结构的逻辑主语与句子的主语不同,它独立存在。
2)名词或代词与后面的分词,形容词,副词,不定式,介词等是主谓关系。
3)独立主格结构一般有逗号与主句分开。
例如:
The test finished, we began our holiday. = When the test was finished, we began our holiday. 考试结束了,我们开始放假。
The president assassinated, the whole country was in deep sorrow. = After the president was assassinated, the whole country was in deep sorrow. 总统被谋杀了,举国上下沉浸在悲哀之中。
Weather permitting, we are going to visit you tomorrow. 天气允许,我们明天去看你。
This done, we went home. 工作完成后,我们才回家。
The meeting gone over, everyone tired to go home earlier. 会议结束后,每个人都想早点回家。
He came into the room, his ears red with cold. 他回到了房子里,耳朵冻得红通通的。
He came out of the library, a large book under his arm. 他夹着本厚书,走出了图书馆
二、with的复合结构作独立主格
表示伴随情况时,既可用分词的独立结构,也可用with的复合结构:with +名词(代词)+现在分词/过去分词/形容词/副词/不定式/介词短语。例如:
He stood there, his hand raised. = He stood there, with his hand raise.他举手着站在那儿。
典型例题
The murderer was brought in, with his hands ___ behind his back。
A. being tied B. having tied C. to be tied D. tied
答案D. with +名词(代词)+分词+介词短语结构。当分词表示伴随状况时,其主语常常用with来引导。由于本句中名词"手"与分词"绑"是被动关系,因此用过去分词,选D.
注意:
1) 独立主格结构使用介词的问题: 当介词是in时,其前后的两个名词均不加任何成分(如物主代词或冠词),也不用复数。但 with 的复合结构不受此限制。例如:A robber burst into the room, knife in hand.(hand前不能加his)劫匪冲进房间,手里拿着刀。
2) 当表示人体部位的词做逻辑主语时,及物动词用现在分词,不及物动词用过去分词。例如:
He lay there, his teeth set, his hand clenched, his eyes looking straight up.
他躺在那儿,牙紧咬,双手握拳,两眼直勾勾看着上面。
典型例题:
Weather___, we'll go out for a walk.
A permitted B permitting C permits D for permitting
答案B. 本题中没有连词,它不是复合句,也不是并列句。 句中使用了逗号,且we 小写,可知其不是两个简单句。能够这样使用的只有独立主格或with的复合结构。据此判断,本句中使用的是独立结构,其结构为:名词+分词。 由于permit在这里翻译为'天气允许',表主动,应用现在分词,故选B。
如果不会判断独立结构作状语的形式,不妨将句子改为条件句,例如本句改为If weather permits, we'll go out for a walk. 然后将if 去掉,再将谓语动词改为非谓语动词即可。2007年高考语法讲义(九)动词的语态
语态有两种:主动语态和被动语态。主语是动作的发出者时为主动语态;主语是动作的接受者时为被动语态。
注意:1)感官动词主动语态的宾语补足语是不带to 的不定式,变为被动语态时,该不定式前要加"to"。例如:
The teacher made me go out of the classroom. 老师逼我走出教室。
--> I was made to go out of the classroom (by the teacher).
We saw him play football on the playground. 我们看见他在草场踢球。
--> He was seen to play football on the playground.
2)情态动词+ be +过去分词,构成被动语态。例如:
Coal can be used to produce electricity for agriculture and industry. 煤可以产生工农业需要的电。
一、let 的用法
1、当let后只有一个单音节动词,变被动语态时,可用不带to 的不定式。例如:
They let the strange go.他们放陌生人走了。
---> The strange was let go.
2、当let 后宾补较长时,let 通常不用被动语态,而用allow或permit 代替。例如:
The nurse let me go to see my classmate in the hospital. 那护士让我去探望住院的同学。
----> I was allowed / permitted to see my classmate in the hospital.
二、短语动词的被动语态
短语动词是一个整体,不可丢掉后面的介词或副词。例如:
My sister will be taken care of by Grandma. 我妹妹由奶奶照顾。
Such a thing has never been heard of before. 这样的事闻所未闻。
三、表示"据说"或"相信" 的词组,基本上由believe, consider, declare, expect, feel , report, say, see, suppose, think, understand等组成。例如:
It is said that… 据说
It is reported that… 据报道
It is believed that… 大家相信
It is hoped that… 大家希望
It is well known that… 众所周知
It is thought that… 大家认为
It is suggested that… 据建议
It is taken granted that… 被视为当然
It has been decided that… 大家决定
It must be remember that… 务必记住的是
四、不用被动语态的情况
1、不及物动词或不及物动词短语,如appear, die disappear, end(vi. 结束), fail, happen, last, lie, remain, sit, spread, stand, break out, come true, fall asleep, keep silence, lose heart, take place等没有无被动语态。例如:
After the fire, very little remained of my house. 大火过后,我家烧得所剩无几。
比较:rise, fall, happen是不及物动词;raise, seat是及物动词。
(错) The price has been risen.
(对) The price has risen.
(错) The accident was happened last week.
(对) The accident happened last week.
(错) The price has raised.
(对) The price has been raised.
(错) Please seat.
(对) Please be seated.
要想正确地使用被动语态,就须注意哪些动词是及物的,哪些是不及物的。特别是一词多义的动词往往有两种用法。解决这一问题唯有在学习过程中多留意积累。
2、不能用于被动语态的及物动词或动词短语,如fit, have, hold, marry, own, wish, cost, notice, watch agree with, arrive at / in, shake hands with, succeed in, suffer from, happen to, take part in, walk into, belong to等。例如:
This key just fits the lock. 这把钥匙只配这把锁。
Your story agrees with what had already been heard. 你说的与我们听说的一致。
3、系动词无被动语态,如appear, be become, fall, feel, get, grow, keep, look, remain, seem, smell, sound, stay, taste, turn等。例如:It sounds good. 听上去不错。
4、 带同源宾语的及物动词如die/death, dream/dream, live/life等,以及反身代词,相互代词,不能用于被动语态。例如:
She dreamed a bad dream last night. 她昨晚做了个恶梦。
5、当宾语是不定式时,很少用于被动语态。例如:
(对) She likes to swim.
(错) To swim is liked by her.
五、主动形式表示被动意义
1、wash, clean, cook, iron, look, cut, sell, read, wear, feel, draw, write, sell等。例如:
The book sells well. 这本书销路好。
This knife cuts easily. 这刀子很好用。
2、blame, let(出租), remain, keep, rent, build等。例如:
I was to blame for the accident. 事故发生了,我该受指责。
Much work remains. 还有许多活要干。
3、在need, require, want, worth (形容词), deserve后的动名词必须用主动形式。例如:
The door needs repairing.= The door needs to be repaired. 门该修了。
This book is worth reading. 这本书值得一读。
4、特殊结构:make sb. heard / understood (使别人能听见/理解自己)等。例如:
Explain it clearly and make yourself understood. 解释清楚些,让别人理解你的话。
六、被动形式表示主动意义,如 be determined, be pleased, be graduated (from), be prepared (for), be occupied (in), get married等。例如:
He is graduated from a famous university. 他毕业于一所有名的大学。
注意:表示同某人结婚,用marry sb. 或get married to sb.均可。例如:
He married a rich girl. 他与一个富妞结婚了。
He got married to a rich girl.
七、need/want/require/worth
当 need, want, require, be worth后面接doing时,表示的是被动意义。例如:
Your hair wants cutting. 你的头发该理了。
The floor requires washing. 地板需要冲洗。
典型例题
The library needs___, but it'll have to wait until Sunday.
A. cleaning B. be cleaned C. clean D. being cleaned
答案A. need (实意) +n /to do,need (情态)+ do,当为被动语态时,还可need + doing. 本题考最后一种用法,选A。如有to be cleaned 则也为正确答案。2007年高考语法讲义(七)动词不定式
动词不定式由to+动词原形构成。这里的to是不定式标志,没有词义。不定式具有名词、形容词或副词的某些语法功能,又有动词的时态和语态的特点及作用。
常见的形式如表所示(以及物动词do为例),不及物动词没有被动语态。
时态\语态 主动 被动
一般式 to do to be done
进行式 to be doing /
完成式 to have done to have been done
完成进行式 to have been doing /
一、有些动词可以用不定式作宾语,大致上有三种情况。
1、有些及物动词用不定式作宾语,结构为动词+不定式。例如:
afford aim agree arrange ask decide
bother care choose demand desire determine
elect endeavor hope fail help learn
long 渴望 mean manage offer plan pretend
refuse tend undertake expect hate intend
例如:
The driver failed to see the other car in time. 司机没能及时看见另一辆车。
He offered to help me. 他表示愿意帮助我。
2、有些动词除了可以用不定式作宾语,还用不定式作补语,即有动词+宾语+不定式的结构。例如:
ask choose expect help beg intend
like/love need prefer prepare want wish
例如:
I like to keep everything tidy. 我喜欢每件东西都保持整洁。
I like you to keep everything tidy. 我喜欢你使每件东西都保持整洁。
I want to speak to Tom. 我想和汤姆谈话。
I want you to speak to Tom. 我想让你和汤姆谈话。
3、 有些动词或动词词组可以用动词+疑问词+不定式的结构作宾语。例如:
decide know consider forget learn remember
show, wonder find out tell inquire explain
例如:
Please show us how to do that. 请演示给我们如何去做。
There are so many kinds of tape-recorders on sale that I can't make up my mind which to buy.
有这么多的录音机,我都拿不定主意买哪一种。
二、不定式作补语
1、有些有动词+宾语+不定式的结构。例如:
advise allow cause challenge command compel
drive 驱使 enable encourage forbid force impel
induce instruct invite like/love order permit
make let have want get warn
persuade request send tell train urge
例如;
Father will not allow us to play on the street. 父亲不让我们在街上玩耍。
The officer ordered his men to fire. 长官命令士兵开火。
注意:有些动词如make,have,get,want等可用不定式作做宾补,也可用分词作宾补。现在分词表达主动,也表达正在进行,过去分词表达被动。
2、 有些有动词+宾语+不定式的结构,不定式的动词往往是be,不定式一般可以省去。例如:
consider find believe think declare(声称) appoint
guess fancy(设想) guess judge imagine know
例如:
We believe him to be guilty. 我们相信他是有罪的。
We know him to be a fool. 我们知道他是个笨蛋。(to be 不能省去)
典型例题
Charles Babbage is generally considered ___ the first computer.
A. to invent B. inventing C. to have invented D. having invented
答案:C. 一般没有consider+宾语+be以外不定式的结构,也没有consider+宾语+doing的结构,排除A、B、D。consider用动词be以外的不定式作宾补时,一般要求用不定式的完成式,故选C。
3、 有些动词可以跟there +to be的结构。例如:
believe expect intend like love mean
prefer want wish understand
例如:
We didn't expect there to be so many people there. 我们没料到会有那么多人在那里。
You wouldn’t want there to be another war. 你不至于想让另外一场战争发生吧。
三、不定式作主语
不定式作主语,往往用it作形式主语,真正的主语不定式放至句子的后面。
例如:It's so nice to hear your voice. 听到你的声音真高兴。
It's necessary for you to lock the car when you do not use it. 不用车的时候,锁车是有必要的。
It's very kind of you to help us. 他帮助我们,他真好。
It seemed selfish of him not to give them anything. 他不给他们任何东西,这显得太自私了。
但是,用不定式作主语的句子中还有一个不定式作表语时,不能用It is… to…的句型。另外,这样的句子,不能用动名词作表语。例如:
(对)To teach is to learn.
(错)It is to learn to teach.
(错)To teach is learning.
(错)Teaching is to learn.
典型例题
The chair looks rather hard, but in fact it is very comfortable to ___.
A. sit B. sit on C. be seat D. be sat on
答案:B. 如果不定式为不及物动词,其后应有必要的介词。当动词与介词连用时,常位于"形容词+动词不定式"结构的末尾。
4、 It's for sb.和 It's of sb.
这样的句子中,由于表语形容词性质的不同,导致了不定式逻辑主语标志用for或of的区别。
1、for sb. 句型中的形容词一般为表示事物的特征特点,表示客观形式的形容词,如easy, hard, difficult, interesting, impossible等:例如:
It's very hard for him to study two languages. 对他来说学两门外语是很难的。
2、of sb句型中的形容词一般为表示性格,品德,心智能力,表示主观感情或态度的形容词,如good, kind, nice, clever, foolish, right。例如:
It's very nice of you to help me. 你来帮助我,你真是太好了。
用for还是用of 的另一种辨别方法:
用介词for或of后面的逻辑主语作句子的主语,用介词前边的形容词作表语,造个句子。如果通顺用of,不通则用for。例如:
You are nice. (通顺,所以应用of)。
He is hard. (非所表达的意思,不通,因此用for。)
五、不定式作表语
不定式可放在be动词后面,形成表语。例如:
My work is to clean the room every day. 我的工作是每天清扫房间。
His dream is to be a doctor. 他的梦想是成为一名医生。
六、不定式作定语
不定式做定语通常要放在被修饰的词后,往往表示未发生的动作。例如:
I have a lot of work to do. 我有许多事要做。
There was nothing to bring home that morning. 那天早上(他回家时)两手空空。
七、不定式作状语
1、目的状语
常用结构为to do , only to do(仅仅为了), in order to do, so as to do, so(such)… as to…(如此…以便…)。例如:
He ran so fast as to catch the first bus. 他飞快地跑以便赶上第一班车。
I come here only to say good-bye to you. 我来仅仅是向你告别。
2、作结果状语,可以表示没有预料到的或事与愿违的结果,不定式要放在句子后面。
I awoke to find my truck gone. 我醒来发现箱子不见了。
He searched the room only to find nothing. 他搜索了房间,没发现什么。
3、表原因
I'm glad to see you. 见到你很高兴。
She wept to see the sight. 她一看到这情形就哭了。
4、表示理由和条件
He must be a fool to say so.
You will do well to speak more carefully.
八、用作介词的to
to 可以用作介词,也可用作不定式的标示。下面的to 都用作介词:
admit to object to be accustomed to be used to stick to turn to开始
look forward to be devoted to pay attention to contribute to apologize to devote oneself to
九、省去to 的动词不定式
1、情态动词 ( 除ought 外) 后。
2、使役动词 let, have, make后,感官动词 see, watch, look at, notice , observe, hear, listen to, smell, feel, find 等后。
注意:被动语态中不能省去to。例如:
I saw him dance. 我看见他跳舞。
=He was seen to dance.
The boss made them work the whole night. 老板让他们整夜干活。
=They were made to work the whole night.
3、would rather,had better句型后
4、Why… / why no…句型后
5、help 后可带to,也可不带to, help sb (to) do sth:
6、but和except后。but前是实义动词do时,后面出现的不定式不带to。
比较:He wants to do nothing but go out. 他只想出去玩。
He wants to believe anything but to take the medicine. 除了吃这药,他什么都信。
7、由and, or和than连接的两个不定式,第二个to 可以省去:
6、通常在discover, imagine, suppose, think等词后作宾补时,可以省去to be。例如:
He is supposed (to be) nice. 他应该是个好人。
典型例题
1) ---- I usually go there by train.
---- Why not ___ by boat for a change
A. to try going B. trying to go C. to try and go D. try going
答案:D. why not 后面接不带to 的不定式,因此选D。
2) Paul doesn't have to be made ___. He always works hard.
A. learn B. to learn C. learned D. learning
答案:B. make后接不带to 的动词不定式,当其用于被动时,to 不可省略。
十、动词不定式的否定式
在不定式标志to前加上not。例如:
Tell him not to shut the window。让他别关窗。
She pretended not to see me when I passed by. 我走过的时候,她假装没看见。
典型例题
1)Mrs. Smith warned her daughter ___ after drinking.
A. never to drive B. to never driver C. never driving D. never drive
答案:A。warn sb to do sth. 的否定形式为warn sb not to do sth. 此处用的是否定词never.
2) The boy wanted to ride his bicycle in the street,but his mother told him ____.
A. not to B. not to do C. not do it D. do not to
答案:A。not to 为not to do it 的省略形式。可以只用to这个词,而不必重复整个不定式词组。及物动词do后应有宾语,因此也B,D不对。
十一、不定式的特殊句型too…to…
1、too…to 太…以至于…。例如:
He is too excited to speak. 他太激动了,说不出话来。
---- Can I help you 需要我帮忙吗
---- Well, I'm afraid the box is too heavy for you to carry it, but thank you all the same.
不用了。这箱子太重,恐怕你搬不动。谢谢。
2、如在too前有否定词,则整个句子用否定词表达肯定,too 后那个词表达一种委婉含义,意 为"不太"。例如:
It's never too late to mend. 改过不嫌晚。(谚语)
3、当too 前面有only, all, but时,意思是:非常… 等于very。例如:
I'm only too pleased to be able to help you. 能帮助你我非常高兴。
He was but too eager to get home. 他非常想回家。
十二、不定式的特殊句型so as to
1、表示目的;它的否定式是so as not to do。例如:
Tom kept quiet about the accident so as not to lose his job.汤姆对事故保持沉默是为了不丢掉他的工作。
Go in quietly so as not to wake the baby.轻点进去,别惊醒了婴儿。
2、表示结果。例如:
Would you be so kind as to tell me the time 劳驾,现在几点了。
十三、不定式的特殊句型Why not
"Why not +动词原形"表达向某人提出建议,翻译为:"为什么不…… " "干吗不…… "。例如:
Why not take a holiday 干吗不去度假
十四、不定式的时态和语态
1、一般式表示的动词,有时与谓语动词表示的动作同时发生,有时发生在谓语动词的动作之后,例如
He seems to know this. 他似乎知道这事。
I hope to see you again. = I hope that I'll see you again. 我希望再见到你。
2、完成式表示的动作发生在谓语动词表示的动作之前。例如:
I'm sorry to have given you so much trouble. 很抱歉,给你添了那么多的麻烦。
He seems to have caught a cold. 他好像已经得了感冒。
3、进行式表示动作正在进行,与谓语动词表示的动作同时发生。例如:
He seems to be eating something. 他好像正在吃什么东西。
4、完成进行式表示动作从过去开始并延续至说话的时候。例如:
She is known to have been working on the problem for many years. 我们知道她研究这问题有好几年了。
十五、动名词与不定式
1、动名词与不定式的区别:
动名词表达的是: 状态,性质,心境,抽象,经常性,已发生的
不定式表达的是: 目的,结果,原因,具体,一次性,将发生的
2、有些动词如continue接不定式或动名词作宾语,意义基本相同。
3、有些动词如continue接不定式或动名词作宾语,意义大相径庭。常见的,下一节有专门讨论。