不带to的动词不定式通常有下面十八种情况

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省略to的动词不定式情况举例

省略to的动词不定式情况举例

省略to的动词不定式情况举例以下是小编为大家列举的省略to 的动词不定式情况,希望能帮助大家更好地认识不定式,提高英语水平。

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 do nothing but go out.He wants to move to France and marry the girl.比较: He wants to do nothing but go out.He wants to believe anything but to take the medicine.典型例题1) ---- I usually go there by train.---- Why not ___ by boat for a change?A. to try goingB. trying to goC. to try and goD. try going答案:D. why not 后面接不带to 的不定式,因此选D。

不带to的动词不定式

不带to的动词不定式

不带to的动词不定式[省to 的动词不定式]介绍1)情态动词( 除ought 外,ought to意思是"应该",是情态动词,只有一种形式,后边接动词不定式,to不能省略。

ought to没有人称和数的变化,后接动词原形可以表示现在、将来或过去将来,由时间状语或上下文决定。

例如:They ought to come tomorrow.他们明天应当来):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。

在使役动词中get除外(get sb. to do sth.)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)表示个人意愿或倾向的would rather,had better,might(just) as well:rather than置于句首时。

Rather than ride on a crowded bus,he always prefers to ride a bike.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。

不定式什么时候不带to

不定式什么时候不带to

动词不定式何时不带to?在英语中,常见的不定式是带to的不定式,但在某些情况下,要使用不带to的不定式。

关于这类不带to的不定式,在使用时极易出错,因此,只有经常注意分析此类语言现象,才能达到正确理解的目的。

现将不带to的不定式的几种情况列举如下:一、在“动词+宾语+不定式”结构中,如果动词是表示感官意义的,如see,feel,hear,observe,notice,watch,listen to,look at等等,其后作宾语补足语的动词不定式结构不带to。

例如:Did you see him go into the house?你看到他进入那座房子了吗?She looked at(watched)other people play basketball.她在观看别人打篮球。

I didn't notice anyone enter the room.我没注意到有人进入那房间。

He listened to us talk.他听我们谈话。

二、在使役动词make,let,have等之后,作宾语补足语的不定式结构不带to。

例如:John made her tell him everything.约翰叫她把一切事情都告诉他。

The soldier had him stand with his back to hisfather.士兵要他背对他父亲站着。

Let me do it.让我来做。

注意:当这类动词转换为被动语态时,后面不带to的动词不定式要转换为带to的动词不定式(但have一般不用于被动句)。

但当句子的动词为let时,to仍可省略。

例如:The boy was seen to go into the house.有人看到那男孩走进那座房子。

They were made to work day and night.他们被迫日夜干活。

The prisoners were let go.罪犯被释放了。

不带to的不定式

不带to的不定式

不带to的不定式不带to的不定式1)在表示生理感觉的动词后的不定式不带to。

这类词有:feel 觉得 observe 注意到,看到 overhear听到watch注视 listen to听perceive察觉,感知notice注意 see看见 look at看 hear听On seeing the young child fell into the lake,Eric sprang to his feet,and went on the rescue.2)另一类是某些使役动词,如make, let,have等。

如:Let him do it.让他做吧。

I would have you know that I am ill.我想要你知道我病了。

(注):①上述感觉动词与使役动词转换为被动结构时.其后的不定式一般需带to,如: He was seen to come.The boy was made to go to bed early.②在动词find与help之后,不定式可带to亦可不带to,如:He was surprised to find the sheep (to) break fence at this season.他发现羊在此季节越出栅栏,感到惊讶。

3)在do nothing/anything/everything but(except)结构中。

例如:Last night I did nothing but watch TV.昨天晚上,我除了看电视别的什么也没有干。

但是,如果谓语动词不是“do nothing,anything,everything”,那么but(except)所跟的不定式则仍须带。

The doctor told him nothing but to stop smoking.医生除了让他戒烟,其它什么都没有说。

There was nothing for them to do but to remain silent.除了保持沉默以外,他们没有别有别的办法。

英语中不带 to 的不定式

英语中不带 to 的不定式

不定式有带to 和不带to 两种,以下例举不带to 的不定式。

一、助动词shall, should, will, would, may, might, do, did, can, could, must, need, dare 后接不带to 的不定式,例如:shall:I shall invite them.我将邀请他们。

should:You shouldn't drink and drive.你不该酒后驾车。

will:How long will you be staying in Paris?你将在巴黎待多久?would:We said we would keep them.我们说过要保存它们的。

may:That may or may not be true.这可能是真的,也可能不是。

might:He said he might come tomorrow.他说他明天可能来。

do:I don't like fish.我不喜欢鱼。

Don’t be late!别迟到!did:They didn't go to Paris.他们没去巴黎。

He didn’t eat meat.他不吃肉。

can:He can speak English.他会说英语。

could:She said that she couldn't come.她说她来不了啦。

must:We must go now.我们现在必须走了。

need:You need not go.你不必去。

dare:He dare not refuse.他不敢拒绝。

二、当need 和dare 用作实义动词时,后面接带to 的不定式,例如:need:I need to get some sleep.我需要睡会儿觉。

dare:Did he dare to do that?他敢那样做吗?三、感官动词 see, hear 等的直接宾语后面可以接不带to 的不定式作宾语补语,表示动作已经做过或是完成了,例如:see:I saw her go.我看见她走了。

动词不定式专题:不带to不定式的十八种情况

动词不定式专题:不带to不定式的十八种情况

不带to不定式的十八种情况动词不定式通常带有符号to,叫做带to的动词不定式(infinitive with "to"),动词不定式有时不带符号to,叫做不带to的动词不定式(infinitive without "to")不带to的动词不定式通常有下面十八种情况:一、与助动词do连用构成谓语动词的否定、疑问和强调形式。

(1)He does not work in the factory.他不在这家工厂上班。

(2)Does she work here?她在这儿上班吗?(3)I did not see her yesterday.我昨天没有看见她。

(4)Did they take you home?他们把你送回家了吗?(5)He does look tired.他看上去的确累了。

(6)They did come yesterday.他们昨天确实来了。

二、与情态动词连用构成复合谓语(1)I can speak English.我会说英语。

(2)May I come in?我能进来吗?(3)Dare he swim across the river? 他敢游过这条河吗?(4)We must work, and above all we must believe in ourselves.我们必须工作,首先我们要信得过自己。

(5)Could you do something for me? 你能为我做点事吗?(6)You shall go at once.你得马上走。

(7)He might be working in the office now. 他这会儿可能正在上班。

(8)I don't think you need have come yesterday. 我觉得你昨天没必要来。

(9)They should be here by now. 他们这会儿应该到了。

不带to的不定式用法

不带to的不定式用法

不带to的不定式用法之老阳三干创作动词不定式的基本形式是“to+动词原形”,它具有名词、形容词、副词的特征,因此在句子里用作主语、宾语、宾语补足语、主语补足语、定语、状语和表语.但在某些结构中,不定式又往往不带to,现将有关不定式不带to的用法年夜致综述如下:1.用在感觉动词see,watch,notice,look at,hear,listento,feel等后,作为宾语补足语,动词不定式不带to.如:We often heard them sing.我们经常听到他们唱歌.I saw her walk into the headmaster's office.我看见她走进了校长办公室.2.用在使役动词make,let,have等后,作为宾语补足语,动词不定式不带to.如:What makes you think I'm a farmer?你怎么认为我是一个农民?Now let me hear you play.现在让我听你演奏.I'll have my brother repair the radio for you.我要让我哥哥给你修理收音机.注意:感觉动词see,hear,watch,notice,feel,look at,listen to和使役动词let,make,have等用于主动语态时,动词不定式作为主语补足语则要带to.如:She was heard to sing in the next room.有人听到她在隔壁房间里唱歌.3.用在had better,had best(最好), would rather(宁愿), may/might as well (最好), cannot but (不能不, 肯定, 不能不), can not help but (不能不) , can not choose but (不能不,只好), 等结构后,词不定式不带to.如:I'd better go and look for him.我最好现在就去找他.You'd best get there before lunch.你最好午饭前达到那儿. We would rather wait till tomorrow.我们宁愿比及明天. 4.两个或两个以上句法功能相同的动词不定式并列使用时,通常只是第一个动词不定式带to,后面的动词不定式则不带to.如:So he decided to go and get some medicine for his cough.因此他决定去买点咳嗽药.They began to read and write.他们开始读和写.5.用在“Will you please+动词不定式”一类暗示邀请或命令的句型中,动词不定式不带to.如:Will you please bring me some chicken?请你给我带点鸡肉来好吗?Will you please ask her to call me tomorrow?请你让她明天给我打个德律风好吗?6.用在由“Why…”或“Why not…”一类暗示建议的句型中,动词不定式不带to.如:Why not join us?(=Why won't you join us?)为什么不加入到我们傍边来呢?Why spend so much money?为什么花这么多钱呢?7.用在助动词will,shall,would,do和情态动词can,may,must,need,dare等后,动词不定式不带to.如:I can sing in English.我会用英语唱.I think it'll fit me quite well before long.我想这(件年夜衣)很快就会合身的.Unfair!How dare you say that?不公平!你怎么敢这么说?注意:ought to,have to中的to不能少.dare和need用作实义动词时,它后面的动词不定式要带to.如:The girl doesn't dare to swim in the river.这女孩不敢在河里游泳.8.用在动词help后作为宾语补足语,动词不定式既可以带to,也可以不带to.如:Will you help me repair my bike?请你帮我修理一下自行车好吗?Li Ping often helps me(to)do my lessons.李平经常帮手我做功课.9.用在do anything(nothing,everything)but或except一类结构后,动词不定式不带to.如:Can't you do anything but ask silly questions?难道你只会提些愚蠢的问题吗?There is nothing to do except wait until the rain stops.除静候雨停之外别无法子.9)在make do(make do with v.设法应付; make do without在没有...的情况下, 设法应付过去), make believe (假装, 假扮), let drop(使跌下, 丢下), let fall (放下(吊桥等) ,使(帷幕)落下) , let fly (v.发射, 猛烈, 攻击), let slip(v.放走, 松开, 错过, 无意中说出), let drive at (,v.瞄准打),let go of (释放, 放开), leave go of(v.松手)等固定搭配中,用不带to的动词不定式.例如:They let go of the rope.他们松开了绳子.John let fly a torrent of abuse at me.约翰朝我痛骂了一顿.10)当What one does/did ;The first thing one shoulddo 等含有实意动词do的结构在句中做主语,且表语是动词不定式时,to常省略.Eg. John was short of money then, so what he did was sell his house to pay off the debts.。

不带to的动词不定式

不带to的动词不定式

不带to的动词不定式有哪些不定式是英语动词的非限定形式之一,是英语中一种非常活跃的语言现象,不带to的不定式(bare infinitive)是我们学习、掌握和运用这一语法现象的难点。

本文的目的就是要对不带to的不定式作一粗浅的探讨。

首先要指出的是,不带to的不定式的使用实际上非常普遍,主要用在情态动词和助动词will,shall,would,should,can,could,may,might,must…以及在作为情态动词的need和dare之后。

但因为这一点在学习英语的过程中极易掌握,故不在此赘述。

除此以外,在下列情况下也要使用不带to的动词不定式。

1.在see,feel,hear,watch,observe,listen to,look at, notice等感官动词或短语以及let,have,make等表示祈使意义的动词后面;不定式作宾语补足语不能带to;help后面的不定式可以不带to,也可以保留to;know在一定的条件下,后面的不定式作宾语补足语时可以不带to。

例如:I saw the man come out of the house.I heard her say that she was from Japan.We felt the house shake.They watched the sun sink into the sea.Did you notice him stop?They did not observe Jim come in and go upstairs.She was listening to him climb the stairs.Look at the boy run!I'll let you know as soon as I hear from her.I had him mend my watch.Electricity makes motors run.He helped me(to)plant trees.I have never known him sing so beautifully.不带to的动词不定式跟在上述动词后面时,情况比较复杂,有以下几个问题须特别注意:(1)当上述句子变成被动语态时,原来作宾语补足语的不定式则相应地成为主语补足语。

8B 牛津 unit7 不带to 的动词不定式有那些

8B 牛津 unit7 不带to 的动词不定式有那些

【问】老师,您好!我有个问题想请教您一下:不带to的动词不定式有哪些?【答】动词不定式属于非谓语形式,即在句中不能作谓语,可以作主语、宾语、宾语补足语、定语、状语和表语,通常动词不定式是由“不定式符号to + 动词原形”构成的。

但是,在有些情况下动词不定式却不带to。

1. had betterhad better的意思是“最好……”,后接不带to的不定式,即接动词原形作宾语。

had在此不能看成是过去式,而应是一般现在时态。

had better可用于一切人称,且没有数的变化。

缩略式为:I'd, you'd, we'd, they'd, he'd等。

如:You'd better come to school early tomorrow morning. 你最好明天早上早点来上学。

We'd better catch a bus. 我们最好乘公共汽车。

He had better go to see the doctor. 他最好去看医生。

2. Why not + 动词原形+ 其它?在“Why not + 动词原形+ 其它?”的句型中,Why not后接不带to的不定式,意为“为什么(怎么)不做……呢?”这种结构表示向对方征求意见或提出请求。

如:Why not come with me? 为什么不和我一起来呢?Why not ask the policeman? 怎么不问问警察呢?3. let, make, have使役动词let,make,have后接不带to的不定式作宾语补足语。

如:Let me see. 让我想想。

Let's go to the school by bus. 让我们乘公共汽车上学吧。

He made me have a try. 他让我试一试。

Who had you be so careless? 谁让你那么粗心呢?4. 表示感官的动词或短语如hear, see, watch, notice, look at, listen to等hear, see, notice等感观动词或短语等常接不带to的不定式作宾语补足语,表示动作已经做过或完成了。

不带to的动词不定式通常有下面十八种情况

不带to的动词不定式通常有下面十八种情况

不带to的动词不定式通常有下面十八种情况动词不定式通常带有符号to,叫做带to的动词不定式(infinitive with"to"),动词不定式有时不带符号to,叫做不带to的动词不定式(infinitive without"to")不带to的动词不定式通常有下面十八种情况一、与助动词do连用构成谓语动词的否定、疑问和强调形式。

(1)he does not work in the factory.(2)Does she work here?(3)I did not see her yesterday.(4)Did they take you home?(5)He does look tired.二、与情态动词连用构成复合谓语(1)I can speak English.(3)Dare he swim across the river?(4)We must work,and above all we must believe in ourselves.(5)Could you do something for me?(6)You shall go at once.(7)He might be working in the office now.(9)They should be here by now.(10)If you will go into the fields and turn over a few big stones,you are sure to uncover a city ofant"people".但与情态动词ought(to)连用时通常带to,和used(to)连用时必须带to三、在表示感觉的动词如:see,look.at,watch,hear,listento,feel,notice,observe,perceive(觉察,看见),behold(书面用语“见到”)等后用作宾语补足语的动词不定。

巧记不带to的动词不定式

巧记不带to的动词不定式

巧记不带to的动词不定式动词不定式的基本形式是“to+动词原形”,但在下列情况下,不定式不带to。

一、与前面不定式并列的不定式省略to两个或两个以上句法功能相同的动词不定式并列时,通常只是第一个动词不定式带to,后面的不定式则不带to。

如:They began to read and write.他们开始读和写。

二、在一些特殊动词后作宾补的不定式不带to我们可以把这类动词归纳为:一感(feel)、二听(hear,listen to)、三让(let,make,have)、四看(see,watch,notice,observe)。

如:I suddenly felt something brush against my arm. 我突然感觉到有什么东西拂着我手臂。

We often heard them sing.我们常常听到他们唱歌。

Now let me listen to you play.现在让我听你演奏。

I’ll have my brother repair the radio for you.我要让我哥哥给你修理收音机。

I saw her walk into the headmaster’s office.我看见她走进了校长办公室。

特别注意:当以上这些动词用于被动语态时,动词不定式作主语补足语时则要带to。

如:She was heard to sing in the next room.有人听到她在隔壁房间里唱歌。

三、一些特殊语言结构中的不定式不带to我们可以把这些特殊语言结构归纳为:一个“宁愿(would rather)”,二个“最好(had better,might as well)”,三个“不得不(can not but,can not help but,can not choose but)”。

如:We would rather wait till tomorrow.我们宁愿等到明天。

英语常考不带to的动词不定式汇总

英语常考不带to的动词不定式汇总

常考的英语不带to的动词不定式:一:情态动词(Modal Verbs)情态动词后面一般接不带to的动词不定式。

如:Can:能够,会I can play the piano. 我会弹钢琴。

Could:可以,能够She could speak French fluently. 她可以流利地说法语。

May:可能,可以You may come in now. 你现在可以进来了。

Might:或许,可能会It might rain later. 或许等会儿会下雨。

Will:将要,会They will arrive at noon. 他们将于中午到达。

Would:愿意,会He would love to go with you. 他很想和你一起去。

Should:应该You should listen to your parents. 你应该听你父母的话。

Must:必须We must finish this project by tomorrow. 我们必须在明天之前完成这个项目。

二:特殊动词(Special Verbs)这些动词表示某种特殊含义,后面也一般接不带to的动词不定式。

如:Let:让,允许Let me help you. 让我来帮你。

Make:使...She made him angry. 她让他生气了。

Help:帮助Can you help me carry this? 你能帮我拿这个吗?Watch:看,观看We are watching TV. 我们正在看电视。

三:感官动词(Sensation Verbs)这些动词表示感官体验,也一般接不带to的动词不定式。

如:Feel:感觉She feels tired after work. 她工作后感到疲倦。

See:看,看见I see a bird on the tree. 我看到树上有只鸟。

Hear:听,听见Can you hear the music? 你听到音乐了吗?四:动词短语(Verb Phrases)这些动词由一个动词和一个名词或形容词构成,也一般接不带to的动词不定式。

省略to的不定式 Microsoft Office Word 97 - 2003 文档

省略to的不定式 Microsoft Office Word 97 - 2003 文档

省略to的不定式。

一、不带to的不定式常见于以下几种情况:1.如果主语是all或是what引导的从句,主语受first, only, one, least或形容词最高级修饰,且后面的从句或短语中有实意动词do时,作表语的不定式前不用to。

如:The only thing I can do was keep silent.What he wants to do is complete the whole task as soon as possible.All he does is study hard.all作主语时,如果从句含有say,其后作表语的动词不定式有时可以省略to。

如:All they say is hurry up.但在其他情况下,to不能省略。

如:All I wanted was to help him.2.在一些固定搭配中,如:let go,make believe,go hang等,不用to。

如:We'll have to make do with dry bread. He made believe he was innocent. They can't let things go hang.3.在would rather,would sooner(宁愿……也不),might (just) as well,cannot help but,cannot but (不得不),do nothing besides,do nothing but,do nothing than,had better,had best等结构后,用不带to的不定式。

The soldiers would rather die than surrender.I cannot but decline his offer.He did nothing else than cry.4. rather than,sooner than (宁愿……也不)位于句首时,其后的动词不用to。

英语语法:不带to的不定式

英语语法:不带to的不定式

英语语法:不带to的不定式关于不带to的不定式(包括某些动词原形在内)的用法,有以下几种情况。

1、动词原形go与come等在口语中可后接不带to的不定式;Go tell him.去告诉他吧。

Come have a glass.来喝一杯吧。

2、不定式的并列:第二个不定式可省略to;He wished to study medicine and become a doctor.他想学医当一名医生。

3、在rether than与other than等之后用不带to的不定式;I would rather go than stay.我宁愿走不愿留。

No one could do other than admire it.人人都不得不赞赏它。

4、cannot but,cannot choose but与cannot help but之后的不定式一般不带to;He could not choose but love her.他不禁爱上了她。

He could not help laughing.他禁不住笑了起来。

5、在连词but之前如有动词do,气候的不定式亦不用to;We have nothing to do now but wait.现在我们只能等待。

Our boss never does anything but talk.我们的老板光说不做。

但连词but之前如无do,其后的不定式一般皆带to;They desired nothing but to succeed.他们只想成功。

I have no choice but to accept the fact.我只有承认事实。

6、为了避免重复而省去to;I'm really puzzled what to think or say.我真不知道该怎么想怎么说才好。

It's just impossible to see that and not weep.看见那个景象而不哭是不可能的。

解析高考中不带to的动词不定式

解析高考中不带to的动词不定式

解析高考中不带to的动词不定式动词不定式通常是指由to加上动词原形(如to write)所构成的一种非限定动词形式,但在有些情况下to则可以省略。

不定式符号to的省略是高中英语语法教学的一个重要内容,也一直是高考考查热点。

下面笔者结合近年高考及相关试题对此作一归纳总结。

除了我们所熟知的使役动词make、let、have和感官动词see、watch、notice、hear、feel、listen to、look at、observe等后通常用省略to的不定式作宾语补足语外,还有如下结论:一、在had better、would rather、may/might as well、rather than等搭配之后,动词不定式也不带to。

例如:If you'd rather be aloue, we'll all leave here.如果你宁愿独自呆着,那我们都离开这儿。

You might as well go without her.你们还是不带她去为好。

【考例】If you are planning to spend your money having fun this week,better____it-you've got some big bills coming.(2004广东)A. forgetB. forgotC. forgettingD. to forget二、在介词but,except之后,如果其前有动词do的某种形式,其后不定式一般不带to,反之则必须带to,表示“不得不,只能”。

例如:He does nothing but watch TV all day long.他整天除了看电视无所事事。

I have no choice but to accept the fact.我别无选择只有接受这个事实。

【考例】Sandy could do nothing but____to his teacher that be was wrong.(2001上海)A. admitB.admittedC. admittingD. to admit三、以why或why not开头引起的无主语中,动词不定式要省略to。

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六、在find后作宾语补定语的动词不定式有时可以省to,但如动词为be,那么一般不省to,要省一起省略"to be"
(1)We found the farm crops(to) do well.
(2)I find the Chinese people to be happy and cheerful.
(8)I had sooner live on a farm than in the city.
(9)He would sooner resign than take part in such dishonest business deeds.
(8)He observed someone open the door.
(9)I did not perceive anyone come in.
(10)He beheld her go out.
(5)Could you do something for me?
(6)You shall go at once.
(7)He might be working in the office now.
(4)I heard her play the piano.
(5)He listend to us talk.
(6)I felt the floor move.
(7)I didn’t notice you enter.
不带to的动词不定式通常有下面十八种情况.txt今天心情不好。我只有四句话想说。包括这句和前面的两句。我的话说完了对付凶恶的人,就要比他更凶恶;对付卑鄙的人,就要比他更卑鄙没有情人味,哪来人情味 拿什么整死你,我的爱人。收银员说:没零钱了,找你两个塑料袋吧! 不带to的动词不定式通常有下面十八种情况
(10)I'd rather not tell you.
(11)He said he'd sooner die than betray his friend.
八、在but(=except),besides,than后的动词不定式一般要带to,但如果其前有作谓语的实义动词do,则不定式不带to
(1)John was made to wash the truck for a week as a punishment.
(2)He was made(to) laugh.
(3)The child was let(to) do it.
(6)He did nothing else than laugh.
(7)I could hardly do less than wait.
九、不定式作表语时,如主语部分含有实义动词do,且句子的时态为一般现在时或一般过去时(多为is或was),不定式可以带to也可不带to
(6)I would rather go mountain—climbing than just take a walk.
(7)My aunt invited me to the movies,but I said I had rather go on a picnic with the girls.
四、使役动词make,let,have,bid, leave(=let)后作宾语补足语的动词不定式不带to
(1)You may take a horse to the water,but you can't make him drink.
(2)I'll let him do it.
五、never与know连用其后作宾语补足语的动词不定式可省to,其时态多为完成时态。
(1)I never knew him act without thinking.
(2)I've never known it snow in July before.
(8)I don't think you need have come yesterday.
(9)They should be here by now.
(10)If you will go into the fields and turn over a few big stones,you are sure to uncover a city of ant"people".
soon…as…后的动词不定一般不带to
(1)When the country calls you for help,you cannot but go.
(2)He can't help but feel sorry for her.
(1)I can speak English.
(2)May I come in?
(3)Dare he swim across the river?
(4)We must work,and above all we must believe in ourselves.
(4)The children found there was nothing they could do with their money,except spend it on sweets.
(5)There seemed nothing else to do but(to)send for a doctor.(but前的实义动词do不作谓语,but后的不定式可带to,也可不带to)
(3)I had never known her ask for pity before.
有时ever与known连用也有上述用法。
(1)Have you ever known me tell a lie?
但与情态动词ought(to)连用时通常带to,和to)连用时必须带to
三、在表示感觉的动词如:see,look.at,watch,hear,listen
to,feel,notice,observe,perceive(觉察,看见),behold(书面用语“见到”)等后用作宾语补足语的动词不定。
(1)I saw her cross the street.
(2)He looked at the children walk up the hill.
(3)I watched the boy cross the road.
(1)What we must do now is(to) find anther person to help us.
(3)he cannot choose but obey.
(4)I had better leave now,or I'll be late.
(5)He had best buy it now while it is still available.
(1)The soldier has no choice but to obey.
(2)He did not have any choice but to obey.
(3)She did nothing but clean the dishes.
但除notice,watch不用被动语态外,上述动词变成被动语态时,其后的动词不定式就不省to
(1)She was seen to cross street.
(2)She was heard to play the piano.
动词不定式通常带有符号to,叫做带to的动词不定式(infinitive with"to"),动词不定式有时不带符号to,叫做不带to的动词不定式(infinitive without"to")
不带to的动词不定式通常有下面十八种情况
一、与助动词do连用构成谓语动词的否定、疑问和强调形式。
(4)Did they take you home?
(5)He does look tired.
(6)They did come yesterday.
二、与情态动词连用构成复合谓语
(3)I found this to be true in all the cities.
(4)We found him (to be) honest/dishonest.
七、在cannot but,cannot help but,can not choose but, had better(best),would(had) rather(sooner)…than…, would as
(3)Don't forget to have them come.
(4)Bid him go home.
(5)Leave him go.
动词have通常不用于被动语态,make和bid可用于被动语态,let偶尔也可用于被动态,用作主语补足语的动词不定式通常带to,但在make和let后有时可以不带to
(1)he does not work in the factory.
(2)Does she work here?
(3)I did not see her yesterday.
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