济南小升初英语基础知识:动词不定式解析_小升初-查字典小升初
 
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济南小升初英语基础知识:动词不定式解析

2012-11-21 17:44:10     标签:小升初真题

2013年济南小升初考试中,英语主要考小学学过的知识,比较简单。下面是习资料请登录奥数网“小升初英语试卷及答案”频道。奥数网整理的英语基础知识,希望对大家有所帮助。

济南小升初英语基础知识:动词不定式解析

1.动词+ 不定式

afford, aim, appear, agree, arrange, ask, be, decide, bother, care, choose, come, dare, demand, desire, determine, expect, elect, endeavor, hope, fail, happen, help, hesitate, learn, long, mean, manage, offer, ought, plan, prepare, pretend, promise, refuse, seem, tend, wait, wish, undertake

The driver failed to see the other car in time.司机没能及时看见另一辆车。

I happen to know the answer to your question.我碰巧知道你那道问题的答案。

2) 动词+不定式;动词+宾语+不定式

ask, beg, choose, expect, hate, help intend like, love, need prefer, prepare, promise, want, wish

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) 动词+疑问词+ to

decide, know, consider forget, learn, remember, show, understand, see, wonder, hear, find out, explain, tell

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。

注意

疑问词带不定式在句中作成分时,谓语动词用单数。如:The question is how to put it into practice. 问题是怎样把它付诸实施。

2. 不定式作补语

1) 动词+宾语+不定式(to do)

advise, allow, appoint, believe, cause, challenge, command, compel, consider, declare, drive, enable, encourage, find, forbid, force, guess, hire, imagine, impel, induce, inform, instruct, invite, judge, know, like, order, permit, persuade, remind, report, request, require, select, send, state, suppose, tell, think, train, trust, understand, urge, warn

a. Father will not allow us to play on the street.父亲不让我们在街上玩耍。

b. We believe him to be guilty. 我们相信他是有罪的。

Find 的特殊用法

Find 后可用分词做宾补,或先加形式宾语,再加形容词,最后加带to 的动词不定式。find后也可带一个从句。此类动词还有get,have。

I found him lying on the ground.

I found it important to learn.

I found that to learn English is important.

4) there be+不定式

believe, expect, intend, like, love, mean, prefer, want, wish, understand

We didn't expect there to be so many people there. 我们没料到会有那么多人在哪里。

注意

有些动词需用as 短语做补语,如regard, think believe, take, consider.

We regard Tom as our best teacher.我们认为汤姆是我们最好的老师。

Mary took him as her father .玛丽把他当作自己的父亲。

3. 不定式作主语

1) It's easy (for me) to do that. 我做这事太容易了。

easy, difficult, hard, important, possible, impossible, comfortable, necessary, better;

the first, the next, the last, the best, too much, too little, not enough

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. 当你不用车的时候,锁车是有必要的。

2) It's very kind of you to help us. 他帮助我们,他真好。

kind, nice, stupid, rude, clever, foolish, thoughtful, thoughtless, brave, considerate(考虑周到的), silly, selfish(自私的)

It was silly of us to believe him.我们真愚蠢,竟然相信了他。

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。

注意

1) 其他系动词如,look,appear等也可用于此句型

2) 不定式作为句子成分时,动词用单数形式。

3) 当不定式作主语的句子中又有一个不定式作表语时,不能用It is… to…的句型

(对)To see is to believe.百闻不如一见。(错)It is to believe to see.

It's for sb.和 It's of sb.

1) for sb. 常用于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:

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的句型一般用表示人物的性格,品德,表示主观感情或态度的形容词,如good, kind, nice, clever, foolish, right。

It's very nice of you to help me. 你来帮助我,你真是太好了。

for 与of 的辨别方法

用介词后面的代词作主语,用介词前边的形容词作表语,造个句子。如果道理上通顺用of,不通则用for。如:You are nice.(通顺,所以应用of)。He is hard.(人是困难的,不通,因此应用for。)

4. 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.

His dream is to be a doctor.

5. 不定式作定语

不定式做定语通常要放在被修饰的词后。例如:

I have a lot of work to do.

So he made some candles to give light.

6. 不定式作状语

1) 目的状语

To… only to (仅仅为了), in order to, so as to, so(such)… as to… (如此……以便……)

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,表事先没有预料到的,要放在句子后面。

What have I said to make you angry.

He searched the room only to find nothing.

3) 表原因

I'm glad to see you.

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。

用作介词的to

to 有两种用法:一为不定式+动词原形; 一为介词+名词/动名词, to 在下面的用法中是第二种,即to+ 名词/动名词:admit to承认,confess to承认,be accustomed to 习惯于,be used to 习惯于,stick to 坚持,turn to开始,着手于,devote oneself to 献身于,be devoted to 致力于, look forward to 盼望,pay attention to

注意

省to 的动词不定式

1) 情态动词 ( 除ought 外,ought to):

2) 使役动词 let, have, make:

3) 感官动词 see, watch, look at, notice , observe, hear, listen to, smell, feel, find 等后作宾补,省略to。

注意

在被动语态中则to 不能省掉。

I saw him dance. =He was seen to dance.

The boss made them work the whole night.=They were made to work the whole night.

4) would rather,had better:

5) Why… / why not…:

6) help 可带to,也可不带to, help sb (to) do sth:

7) but和except:but前是动词do时,后面出现的动词用不带to的动词不定式。

8) 由and, or和than连接的两个不定式,第二个to 可以省去:

9) 通常在discover, imagine, suppose, think, understand等词后,可以省去to be:He is supposed (to be) nice.他应该是个好人。举例:He wants to move to France and marry the girl. He wants to do nothing but go out. 比较:He wants to do nothing but go out. He wants to believe anything but to take the medicine.

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。

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) so kind as to ---劳驾

Would you be so kind as to tell me the time? 劳驾,现在几点了。

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?

不定式的时态和语态

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
1) 现在时:一般现在时表示的动词,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。

He seems to know this.

I hope to see you again. = I hope that I'll see you again.我希望再见到你。

2) 完成时:表示的动作发生在谓语动词表示的动作之前。

I'm sorry to have given you so much trouble.

He seems to have caught a cold.

3) 进行时: 表示动作正在进行,与谓语动词表示的动作同时发生。

He seems to be eating something.

4) 完成进行时:

She is known to have been wreaking on the problem for many years.

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) 接不定式或动名词,意义相同。

3) 动名词与不定式语义不同的有11 组:

stop to do stop doing

forget to do forget doing

remember to do remember doing

cease to do cease doing

try to do try doing

go on to do go on doing

afraid to do afraid doing

interested to do interested doing

mean to do mean doing

regret to do regret doing

begin/start to do begin/start doing

特殊词精讲

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。

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。

forget doing/to do

forget to do忘记要去做某事。(未做)

forget doing忘记做过某事。(已做)

The light in the office is stil on. He forgot to turn it off. 办公室的灯还在亮着,它忘记关了。(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)

Don't forget to come tomorrow. 别忘了明天来。(to come动作未做)

try doing/to do

try to do努力,企图做某事。

try doing 试验,试着做某事。

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。

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。

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

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"。

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,而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。

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。

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)

mean to doing/to do

mean to do 打算、想

mean doing意味着

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. 赠加工资意味着增加购买力。

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.

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

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。

I begin to understand the truth.我开始明白真相。

4) 物作主语时

It began to melt.

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,真实性;+doing 表示动作的连续性,进行性

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。

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