含有带to的动词不定式句型

含有带to的动词不定式句型：

1. It’s time to do sth.

2. It takes sb. some time to do sth.

3. tell/ask/want/encourage/invite/ sb. to do sth.

4. Would you like to do sth.?

5. It’s good/bad to do sth.

6. It’s good/bad for sb.to do sth.

7. be+adj.+enough to do sth.

8. sb. is ready to do sth.

9. It’s+adj.+ for sb. to do sth.

10. It’s+adj.+ of sb. to do sth.

11. would like/love /decide/want/wish/to do sth.

12. would like/love sb. to do sth.

13. Prefer to do sth. rather than do sth.

I prefer to stay at home rather than go out.

14. what/how/ when/where/whether to do sth

15. can’t wait to do

16. too … to do …

17. be afraid /ready/able/sure to do

18. seem to do

非谓语动词的用法

非谓语动词：在句子不作谓语使用的动词，其形式有不定式、现在分词、动名词和过去分词四种（通常我们把现在分词和动名词统称为-ing分词）。

非谓语动词短语：非谓语动词仍保留动词的性质，可以有自己的宾语、表语或状语，我们将非谓语动词和其宾语、表语或状语一起称作非谓语动词短语。

非谓语动词的判定方法：考虑句中谓语动词以及其它词语同非谓语动词的关系和对非谓语动词形式的限制，以便选用正确的非谓语动词形式。

非谓语动词判定的基本步骤：①是否应用-ing分词②是否应用不带to的不定式③-ing分词还是不定式④-ing分词还是过去分词⑤不定式的用法

一、是否应用-ing分词：下列情况必须用-ing分词

1、在下列动词（短语）之后作宾语或宾补时；

Consider , dislike , enjoy , feel like , finish , imagine , mention , give up , mind , put off , can’t help , can’t stand , suggest , understand , be busy , ha ve fun , have difficulty , have trouble, keep , spend , waste , have a hard time , find , look forward to , be use to(习惯于) ，prefer ( doing ) to ( doing ) ，take turns等。

e.g When she heard the news, she couldn’t help crying.

I found a boy playing in the corner.

2、在介词之后作宾语时；

e.g Lucy is good at swimming.

3、作句子主语位于句首时；

e.g Exercising every day is good for your health.

4. 位于限定词后作名词使用时；

e.g This is the beginning of the garden tour.

5、在“go + -ing形式（运动名称）”和“ do some + -ing形式”这类固定短语中。

e.g We will go fishing if it doesn’t rain tomorrow.

She did some shopping last Sunday.

6. –ing分词前逻辑主语的使用：有时我们需要在-ing分词前加上其动作的发出者（逻辑主语），其动作的发出者用名词所有格或形容词性物主代词表示。

e.g Would you mind my smoking here?

二、是否应用不带to的不定式：下列情况必须使用不带to的不定式

1、位于情态动词后同情态动词一起作谓语时；

e.g You should see a dentist if you have got a toothache.

2、位于would rather , had better , why (not)之后的不定式；

e.g You had better stay here until the police come.

Why not go to the movie with us?

3、位于感官动词和使役动词后作宾补的不定式（注：help之后作宾补的不定式可以带to也可不带to）；

e.g I often hear her sing English songs in the next room.

The boss made them work over 12 hours a day.

She often helps her mother (to) do the housework.

4、两个不定式由and , or , except , but 或than连接在一起时，第二个不定式常常不带to。

e.g I’d like to lie down and have a good rest.

三、-ing分词还是不定式：

1、动词like之后，使用不定式主要说明一次性的动作；使用-ing分词主要说明存在的状况。

e.g I like playing soccer, but I don’t like to play it this afternoon.

2、begin和start之后，-ing分词和不定式都可使用，但如果begin/start自身为-ing分词时，之后通常用不定式。

e.g He began to do/doing his homework after dinner.

I’m starting to cook dinner very soon.

3、stop、remember、forget和go on之后的非谓语动词形式的判定，主要应考虑非谓语动词的动作在谓语动词动作前是否已发生：如动作发生在谓语动词的动作前，用-ing形式；如动作发生在谓语动词的动作后，用不定式。

e.g The teacher is coming, please stop talking.

On her way home, she stopped to buy some food for supper.

Don’t forget to turn off the light when you leave.

He did his homework again. He forgot doing it yesterday.

4、need之后的非谓语动词形式的判定，主要考虑句子的主语同非谓语动词的关系：如句子的主语为非谓语动词的逻辑主语，用不定式；如句子的主语为非谓语动词的逻辑宾语，用-ing形式。

e.g We need to water the flowers this afternoon.

The flowers need watering this afternoon.

5. 感官动词后的非谓语动词形式的判定，主要应考虑是说明整个动作（不带to 的不定式），还是说明动作的一部分（-ing形式）。主要有下面几种情况：

（1）句子中有表频率的词时，用不带to的不定式；

e.g I often hear Lucy sing songs in the classroom.

（2）look at以及see和hear的过去式后，一般用-ing形式；

e.g I saw the children playing soccer on the playground.

（3）watch之后，一般用不带to的不定式。

e.g He sat there and watched them play basketball.

四、-ing分词还是过去分词：

1. 表伴随的插入语中的非谓语动词形式的判定，主要应考虑句子的主语同非谓语动词的关系：如句子的主语为非谓语动词的逻辑主语，用-ing形式；如句子的主语为非谓语动词的逻辑宾语，用过去分词。

e.g When asked where she was from, she couldn’t help crying.

Taking some papers in his hand, Mr. Smith hurried into the classroom.

2. call和name位于名词后，其后带上人名、书名等词语时，用过去分词。

e.g Do you know the boy named Jack Black?

Yesterday we saw an action movie called Heroes.

3. there be句中位于名词后的非谓语动词，如名词相当于动作发出者（主动式），非谓语动词用-ing分词，如名词为动作承受者（被动式），非谓语动词用过去分词。

e.g Listen! There is someone crying for help.

There is little time left. Let’s hurry up.

五、不定式的用法（非上述四种情况时，非谓语动词一般都使用带to的不定式）：

1．不定式的否定形式：在不定式的小品词to前加否定词not。

e.g The policeman told the boys not to play soccer in the street.

2. 先行词it的使用：当不定式做句子的主语时或做句子的宾语其后带有宾补时，为保持句子结构的平衡，通常将不定式放在句子末尾，而在原主语或宾语的位置上加上先行词it。

e.g It is necessary for us to read English every morning.

I found it necessary for us students to read English every morning.

3. “wh-词+不定式”的用法：wh-词（特殊疑问词）同不定式连用相当于一个wh-词所引导的一个宾语从句，使用时应注意以下原则：

①如wh-词为疑问代词（what、which、who、whom或whose）时，不定式动词应为及物动词，但不带宾语（wh-词相当于不定式动词的宾语），如不定式动词为不及物动词，应带上适当的介词。

e.g There were too many things on sale. I didn’t know what to buy.

I really don’t know what to talk about at the meeting.

②如wh-词为疑问副词（how、when、where等）时，不定式短语中不能再出现表示相同关系的词语；另：如不定式动词为及物动词时，其后必须带上宾语。

e.g I don’t know how to do it.

③如wh-词为连词whether时，不定式短语中应有表示选择的部分，否则不定式短语应用or not结尾。

e.g He wants to know whether to go to a movie or stay at home.

I wondered whether to buy a computer or not.

一般情况下，我们应记住三个短语：what to do、how to do it和which to choose。

4. 不定式的逻辑主语：不定式动词仍保留动词的特性，也有自己的主语（不定式动作的发出者），我们将不定式动作的发出者称为不定式的逻辑主语。

不定式的逻辑主语通常是句子的主语或间接宾语：

e.g He went to the town to buy some book yesterday.

He asked me to have dinner with him this afternoon.

有时不定式的逻辑主语不是句子的主语或宾语（不定式作主语时），我们应在不定式前使用介词短语for s.b/of s.b为其加上逻辑主语：

e.g It’s necessary for us students to study English well.

It’s very kind of you to help me so much.

注：逻辑主语前介词for和of的选用，应考虑其前形容词的作用。如其前形容词用来说明不定式，逻辑主语前的介词用for，如说明逻辑主语，介词用of。

5. 不定式的逻辑宾语：有时句子中不定式前的某个词语相当于不定式的宾语，我们将其称为不定式的逻辑宾语，此时不定式的动词应为及物动词或及物动词词组（动词为不及物动词时，应加上适当的介词），但不能再带宾语。

e.g 错：The question is too difficult for me to answer it.

对：The question is too difficult for me to answer.

错：The computer is too expensive for me to pay.

对：The computer is too expensive for me to pay for.

6. 不定式位于名词后作定语：不定式位于名词后作定语使用时应注意考虑名词同不定式的关系。

①名词相当于不定式的逻辑主语：

e.g He is the first Chinese pianist to win this prize.

②名词相当于不定式的逻辑宾语：此时不定式的动词应为及物动词或及物动词词组（动词为不及物动词时，应加上适当的介词），但不能再带宾语。

e.g Today we have much homework to do.

③名词相当于不定式的状语：此时不定式应以介词结尾（因为名词不能直接作状语，而应在其前加上适当的介词构成介词短语用来作状语，说明地点、方式等，所加的介词这时放在不定式后）。

e.g First we have to find a restaurant to eat dinner in.

He wants to find a partner to practice English with.

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

中考英语 不定式省略to的10种情况

不定式省略to的10种情况 2009-12-30 11:32:34 来源：编辑：点击：次 年终奖：你的年终奖到手了吗？冷暴力口语，你伤父母心了吗？ 一、使役动词与to的省略 当不定式用于let, make, have等使役动词后作宾语补足语，不定式必须省略to。如： Let me have another cup of tea. 给我再来一杯茶。 She had him dig away the snow. 她让他把雪挖走。 They made him tell them everything. 他们强迫他把一切全告诉他们。 但是，当使役动词用于被动语态时，其后的不定式则必须要带to。如： 他被迫一天工作20小时。 误：He was made work twenty hours a day. 正：He was made to work twenty hours a day. 注意，表示使役意义的let和have很少用于被动语态。 另外注意，force, oblige等虽然也表示“使”，但它们后用作宾语补足语的不定式必须带to。如： They forced her to sign the paper. 他们强迫她在文件上签字。 The law obliged parents to send their children to school. 法律要求父母送子女上学。 二、感觉动词与to的省略 当不定式用于表示感觉的动词feel, hear, notice, observe, see, watch, look at, listen to等作宾语补足语时，不定式必须省略to。如： We all felt the house shake. 我们都感觉这房子在震动。

含有be动词的句型转换

一．含有be动词的句型转换。 1．I am a student . 一般疑问句_________________ 肯定回答______否定回答_______ 变否定句____________________ 2. She is a doctor. 一般疑问句_________________ 肯定回答______否定回答_______ 变否定句____________________ 3.We’re late today. 一般疑问句_________________ 肯定回答______否定回答_______ 变否定句____________________ 4. They are students here. 一般疑问句_________________ 肯定回答______否定回答_______ 变否定句____________________ 二．含有情态动词的句型转换。 1 . I can sing very well. 一般疑问句_________________ 肯定回答______否定回答_______ 变否定句____________________ 2.She can dance . 一般疑问句_________________ 肯定回答______否定回答_______ 变否定句____________________ 3. We can speak English. 一般疑问句_________________ 肯定回答______否定回答_______ 变否定句____________________ 三含有实义动词的句型转换。1．I ride a bike . 一般疑问句_________________ 肯定回答______否定回答_______ 变否定句____________________ 2.She plays the violin after school. 一般疑问句_________________ 肯定回答______否定回答_______ 变否定句____________________ 3. They like play computer games. 一般疑问句_________________ 肯定回答______否定回答_______

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 his father．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。 三、在help后面可以接带to或不带to的不定式。例如： Can I help（to）carry it for you？我可以帮你拿这个吗？ They helped（to）carry the boxes upstairs．他们帮忙把箱子搬上楼去。 四、当介词except，but后接不定式时，如果except，but前面含行为动词do或do的各种词形时，不定式一般不带 to。例如： There was nothing to do but wait till he came back．没有办法只好等他回来。 He will do anything except lend you money．他决不会借钱给你。 如果except，but前面没有do这一动词或do的各种词形时，不定式一般都带to。例如： There's no choice but to wait for the rain to stop．没有别的选择，只好等雨停下来。 五、在“Why．．．？”或“Why not．．．？”结构中，紧接其后的动词不定式总是不带to。例如：

有关to do不定式的,to do不定式什么时候可以省略to do;还有什么时候用被动形式,什么时候不用。

2014年8月4日 17:10 有关to do不定式的，to do不定式什么时候可以省略to do；还有什么时候用被动形式，什么时候不用。 一、使役动词与to的省略 当不定式用于let, make, have等使役动词后作宾语补足语，不定式必须省略to。如：Let me have another cup of tea. 给我再来一杯茶。 She had him dig away the snow. 她让他把雪挖走。 They made him tell them everything. 他们强迫他把一切全告诉他们。 但是，当使役动词用于被动语态时，其后的不定式则必须要带to。如： 他被迫一天工作20小时。 误：He was made work twenty hours a day. 正：He was made to work twenty hours a day. 注意，表示使役意义的let和have很少用于被动语态。 另外注意，force, oblige等虽然也表示“使”，但它们后用作宾语补足语的不定式必 须带to。如： They forced her to sign the paper.他们强迫她在文件上签字。 The law obliged parents to send their children to school. 法律要求父母送子女上学。 二、感觉动词与to的省略 当不定式用于表示感觉的动词feel, hear, notice, observe, see, watch, look at, listen to等作宾语补足语时，不定式必须省略to。如： We all felt the house shake. 我们都感觉这房子在震动。 I heard him go down the stairs. 我听见他下楼了。 Did you notice her leave the house? 她离开屋子你注意到了吗? I watched her get into the car. 我看着她上了车。 但是，当feel后用作宾语补足语的不定式为to be时，则不能省略to。如： They all felt the plan to be unwise. 他们都认为这个计划不明智。 注意，当这些动词变为被动语态时，不定式前的to不能省略。如： They were heard to break a glass in the next door. 听见他们在隔壁打破了一个玻璃杯子。 另外，若用作宾语补足语的不定式为完成式，则通常应带 to。如： I noticed her to have come early. 我注意到她来得很早。 三、why (not) 与to的省略 在why (not)…?之后的不定式不能带to。如： Why argue with him? He’ll never change his mind. 为什么要跟他争论? 他永远不会改变 自己的看法。 Why not try going by boat for a change? 为什么不试着坐船去，这样也可以换换花样? Why not wait till the winter sales to buy a new coat? 为什么不等到冬季大贱卖时再买一件新外衣呢? 四、介词except / but与to的省略 当不定式用作介词except或except的宾语时，该不定式有时带 to，有时不带 to，情形比较复杂，大致原则是：其前有do，不定式不带 to；其前没有 do，不定式通常带to。如： He likes nothing except to watch TV. 除了看电视外，他什么都不喜欢。 It had no effect except to make him angry. 除惹他生气外，没产生任何效果。

不带to的动词不定式讲课教案

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(完整版)省略to的动词不定式用法归纳

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九种不定式省略to的情况

句子成分 句子主要有以下几种成分： 1）主语（subject）是一句话的中心，整句话都在谈它的情况：my sister is a nurse. Her room is on the 5th floor. 2）谓语（predict）是主语的主要情况，可以表示动作，也可以表示状态：she works in a hotel.(动作) she knows a little English.（状态） 3）宾语（object）表示动作的承受者，也可以表示动作的结果：Everybody likes her. She is writing a letter now. 4）表语（predicative）和系动词一道构成谓语：she is conscientious girl.她是一个工作认真的女孩。 5）定语（attributive）修饰名词，代词等： Her hospital is not very big. But everyone in the hospital works hard.. 6）状语（adverbial）修饰动词，形容词或者副词：She goes to work very early. She feels very happy 此外还有同位语（appositive）插入语（parenthesis）以及呼语（vocative）This is my sister Mary. Mary is good girl, they say Sit down, Mary 句子的类型 1）按照说话的目的分为四类： A．陈述句（statement）: 陈述一个事实，表示一个看法等：Beijing is the capital of China She may be right. B．问句（question）: 提出问题： Where are you from? C．祈使句（imperative）提出命令请求等。 Don’t be late again. Take a seat, please. D．感叹句（exclamation）表示赞美惊异等情绪： W hat a nice view from the window! 2）从结构上来区分又可以分为三类： a简单句 如果一个句子只包含一个主谓结构，而句子各个成分都只用单词或短语表示,它就是简单句。 I live in the country. The teachers and students cheered at the news. 简单句主要由五种基本句型构成，千千万万的句子变化可以看作是这五种基本句型的扩展、省略、组合和倒装。 基本句型一：主语+谓语（不及物） The baby smiled. The teacher came in, followed by some students. 基本句型二：主语+谓语（系）+表语。

be动词和实义动词的句型转换练习测试

1. Jack and Tom isbrothers. ( ) 2. Thisareadesk. ( ) 3.I are your son. ( ) 4. I isa girl. ( ) 5. You am a student. ( ) 6. He areJack. ( ) 7. Mymother are a doctor. ( ) 8. Isyoua teacher ( ) 9. Those is my books. ( ) 10. We is good friends. ( ) 二 am,is,are专项练习 1.I______astudent. ______youastudent No,I_____not. 2.Thegirl______Jack'ssister. 3.Thedog_______tallandfat. 4. Theman_______ateacher. yourbrotherintheclassroom 6.Where_____yourmother She______at home. 7._______yourfather a diver 8.MikeandLiuTao______atschool. 9.Ann______is my mum 10.Whosesocks______they 11.That______myredskirt. 12.Who______I 13. Thebooks______onthedesk. 14. Here______atoy busforyou. 15.Here______sometoy bearsforyou. 16.Theblackbook______forSuYang. 17.This___a cardforYang Ling. 18.Thetwocupsofmilk_____forme. 19.Sometea______intheglass. 20.GaoShan'sshirt_______overthere. 21.Mysister'sname______Nancy. 22.This______notWangFang'spencil. 23.____DavidandHelenfromEngland 24.There______agirlintheroom. 25.You,heandI______fromChina. 26. Lily______ is eating an egg. 27. This______ my family photo. 28. Tom and I______ good friends. ______herkeys. This______my key. 30.What color ______yourbook 31. Where ______his pencil

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不定式省略to的九种情况 一、使役动词后省略to的情况 在let, make, have等使役动词后用作宾语补足语的不定式必须省略to。如： Mymotherwouldn’tletmegothefilm.我妈妈不会让我去看电影的。 Idon’tlikemilk,butmothermademedrinkit.我不喜欢牛奶，可是母亲强迫我喝。Iwouldhavehimwaitfor me at the gate of the park.我要他在公园门口等我。注意： 1.当使役动词用于被动语态时，要补上在主动语态中省略的to(主要是指make，let和have很少用于被动语态)。 2. force, oblige等虽然也表示“使”，但它们后用作宾语补足语的不定式必须带to。如： He forced me to go with them.他迫使我同他们一起去。The police obliged him to leave.警方强迫他离开。 二、感觉动词后省略to的情况 在感觉动词后用作宾语补足语的不定式必须省略to在感觉E: 10.5pt;mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'TimesNewRoman'">。如： Iwatchedhergetintothecar.我看着她上了车。Isawthewomanenterabank.我看见这个女人进了一家银行。Weoftenhearhersingthis song.我们经常听到她唱这首歌。Did you notice her leave the house?她离开屋子你注意到了吗?注意： 1.这里所说的感觉动词主要包括see, hear,observe, notice, feel, watch等。但是它们用于被动语态时，其后的不定式必须带to。如：

be动词和实义动词的句型转换练习

v1.0 可编辑可修改 一．改错：（找出错误，并在括号中改正）1. Jack and Tom is brothers. ( ) 2. This are a desk. ( ) 3. I are your son. ( ) 4. I is a girl. ( ) 5. You am a student. ( ) 6. He are Jack. ( ) 7. My mother are a doctor. ( ) 8. Is you a teacher ( ) 9. Those is my books. ( ) 10. We is good friends. ( ) 二 am, is, are 专项练习 1. I ______ a student. ______ you a student No, I _____ not. 2. The girl______ Jack's siste r. 3. The dog _______ tall and f at. 4. The man _______ a teache r. your brother in the classroo m 6. Where _____ your mother She ______ at home. 7. _______ your father a dive r 8. Mike and Liu Tao ______ a t school. 9. Ann ______ is my mum 10. Whose socks ______ they 11. That ______ my red skir t. 12. Who ______ I 13. The books ______ on the de sk.

不定式省略to的规则

不定式省略to的规则 山东省民族中等专业学校赵敏焦燕 不定式一般带有符号to，它不能单独作谓语，在省去to以后，可以与助动词、情态动词一起构成合成谓语。这是常见的用法。此外，在下列情况下，不定式也需将to省掉。 1、不定式与一些固定词组构成合成谓语时，必须省去to。 常见的固定词组有： had better 最好 would/had rather+v(than+v) 宁可（前者），也不（后者） would/had sooner+v(than +v) can/could not but 不得不，禁不住，非……不可 can/could not choose but do nothing but+v 只是 do no/not more than+v 仅仅 could do nothing else than+v 不得不 2、在一些表示感观、使役意义的动词后面跟不定式作宾语补足语时，不定式须省去to。 常见的有：make, let, have；see，watch，notice，look at ，observe；hear，listen to ，help，feel等。 3、在介词but，except，besides，than等前面若有实意动词do时，常用不带to的不定式作介词宾语。如果没有do，不可省to。例如： Tom did nothing except clean the dishes. He did nothing else than laugh. What do you like to do besides swim? He seldom goes there except to look at Mary. 4、在动词help后面跟不定式作宾语时，常常省去to（也可以带to）。例如： Can I help carry it for you? They often help ( to ) sweep the floors. 5、在主–系–表句型中，如果句中主语部分有实意动词do，作表语的不定式可以省去to。例如： All she did was turn off the light. 6、在go，come，run，hurry up，stay，wait，try等词之后常用“and＋不带to的不定式”。 在这一结构中，and后的不定式起目的状语作用。它主要用于祈使句，也可用在陈述句中。 Go and tell them to stop talking. Come and have a rest. Stay and have dinner. Try and get some water. 7、and，or可以连接并列的不定式，第二个不定式前通常省去to ；另外在第一个不定式后跟多个结构上并列的不定式时，通常第一个不定式带to，后

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．

be动词练习与句型转换

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