英语动词不定式用法梳理及练习题
小学英语动词不定式用法小结及练习
小学英语动词不定式用法小结及练习一、动词不定式的形式动词不定式是动词的一种形式，由“to+动词原形”构成。
例如：to study, to play, to eat等。
二、动词不定式的用法1. 用作动词的宾语：- I want to go to the park.（我想去公园。
）- She likes to play soccer.（她喜欢踢足球。
）2. 用作动词的主语：- To learn English is important.（研究英语很重要。
）- To eat fruits is good for your health.（吃水果对健康有益。
）3. 用作形容词的补语：- I am happy to help you.（我很高兴帮助你。
）- She is eager to learn new things.（她渴望研究新东西。
）4. 用作副词的补语：- He went to the zoo to see the animals.（他去动物园看动物。
）- She ran fast to catch the bus.（她跑得很快以赶上公交车。
）5. 用作名词的补语：6. 用作介词的宾语：- Are you ready to start the game?（你准备好开始比赛了吗？）- She is excited to go on a trip.（她很兴奋去旅行。
）练：1. 请将下列句子中的划线部分改为动词不定式形式：- I like swimming in the pool. → I like to swim in the pool.- They want playing soccer. → They want to play soccer.2. 请填入适当的动词不定式形式：- My dream __________ (be) a teacher.- He needs __________ (study) harder for the exam.3. 请根据句意选择动词不定式的正确形式填空：- She decided ______ (go) to the movie with her friends. 以上是动词不定式的用法小结及相关练。
动词不定式的用法与练习
动词不定式的用法与练习动词不定式是英语中的一种非限定性动词形式，通常由"to"加上动词的原形构成。
不定式可以具有名词、形容词或副词的功能，在句子中起到不同的作用。
本文将介绍动词不定式的基本用法，并提供一些练习帮助读者巩固所学知识。
一、动词不定式作主语动词不定式可以在句子中作主语，常见句型为：To study is important for success.解析：动词不定式"To study"作主语，表示“学习”在成功中的重要性。
二、动词不定式作宾语动词不定式可以在句子中作宾语，常见句型为：I want to learn French.解析：动词不定式"to learn"作宾语，表示“学习法语”的愿望。
三、动词不定式用于形容词后动词不定式可以用于形容词的后面，修饰名词或代词，常见句型为：I am happy to help you.解析：动词不定式"to help"用于形容词"happy"后，表示“乐意帮助你”。
四、动词不定式用于副词后动词不定式也可以用于副词的后面，修饰动词或整个句子，常见句型为：She went to the park to enjoy the sunshine.解析：动词不定式"to enjoy"用于副词"to the park"后，表示“去公园享受阳光”。
五、动词不定式用于介词后动词不定式还可以用于介词的后面，常见句型为：He is good at playing basketball.解析：动词不定式"playing"用于介词"at"后，表示“擅长打篮球”。
六、动词不定式作状语动词不定式可以作为状语，用于修饰动词、形容词或整个句子，常见句型为：She works hard to achieve her goals.解析：动词不定式"to achieve"作状语，修饰动词"works hard"，表示“努力工作以达成她的目标”。
动词不定式归纳(含练习及答案)
动词不定式归纳定义：不定式的to和介词to需要被区分开，不定式的to后接动词原形，介词to后接名词、代词或动名词。
不定式作动词宾语He decided to invite all of his classmates to attend the holiday at the beach. 不定式作宾语He promised not to tell anyone about it.如果宾语有自己的补语，则常用it作形式宾语，而把真正作宾语的不定式放在后面放在后面，常带有形式宾语的动词有：believe. Consider. Feel. Find. Know. Make . regard例：we think it important to obey the laws. √we think to obey the laws is important. ×I know it impossible to finish so much homework in a day.不定式作介词宾语当介词but、except、besides前面有行为动词do及其各种形式时，介词后面的不定式可以省略to，否则不省略。
What do you like to do besides play football？We have no choice but to wait.个别介词可以用“疑问词+不定式”作宾语The boy has him own idea of how to finish it.不定式起形容词作用作定语不定式作定语用来修饰名词或代词，置于它所修饰的词后，而且放在其他后置定语的后面。
同时与它所修饰的名词或代词形成逻辑上的动宾关系或主谓关系。
He always has a lot of meetings to attend. 不定式to attend 和名词meetings 形成动宾关系The next train to arrive was from Seattle. To arrive 和train形成主谓关系Do you have anything interesting to read?如果作定语用的不定式是不及物动词，就要加上介词，使被修饰的这个词成为这个介词的逻辑宾语。
动词不定式用法全解(含测试题及答案)
动词不定式用法全解英语动词的非谓语形式为三种：动词不定式、动名词和分词。
非谓语动词没有人称和数的变化。
动词不定式是一种非谓语动词形式，其结构为“to＋动词原形”，其中to不是介词，而是动词不定式的符号，称为小品词，动词不定式没有人称和数的变化。
动词不定式和其后面的名词等构成不定式短语，在句子中可以用作主语、表语、宾语、补足语、定语、状语等。
动词不定式的形式：第一部分动词不定式的时态一、动词不定式的时态：动词不定式不能在句中作谓语，尽管它本身有时态的变化，但是却不能靠自身的变化形式表示动作发生的具体时间。
动词不定式发生的时间，一般只能根据谓语动词的时间，产生相对的先后时间关系。
1．不定式的一般式，表示不定式的动作与谓语动词动作几乎同时发生，或在谓语动作之后发生，或者不强调不定式动作的时间性。
但不定式表原因时，往往先于谓语动作之前发生。
如：The news will not fail to surprise him.这个消息将不会不使他大吃一惊的。
（不定式动作在将来和谓语动作同时发生）I helped to repair the car.我帮助修理汽车。
（不定式动作在过去与谓语动作同时发生）He didn't know where to go.他不知道该去哪儿。
（不定式稍晚于谓语动作）Tell your brother not to come tomorrow.告诉你哥哥明天不要来。
（不定式晚于谓语动作）判断：He decided to sell his car.I tried to go to school in time.I hope to see you soon不定式表示谓语动作的原因时，往往发生在谓语动作之前。
如：I am very happy to see you here.She seemed surprised to meet us.（先是遇见我们，她然后很吃惊）2．不定式的完成式，通常表示动作发生在谓语动词之前。
初中英语动词不定式用法梳理及练习题
初中英语动词不定式用法动词不定式是由“不定式符号动词原形”构成的一种非谓语动词结构。
有些动词不定式不带，动词不定式可以作句子的主语、表语、宾语、定语、补语、状语或单独使用。
不定式保留动词的某些特性，可以有自己的宾语、状语等。
动词不定式和它后面的宾语、状语等一起构成短语，叫作不定式短语。
一、用作主语直接把动词不定式置于句首的情况不多，多数情况用作形式主语，把真正的主语——动词不定式置于句末，特别是不定式短语较长时。
动词不定式作主语，谓语动词用第三人称单数形式。
带疑问词的不定式短语作主语常置于句首，复合不定式结构作主语常置于句末。
如：1. I t .2 .3 .4 .(眼见为实；百闻不如一见)二、用作表语动词不定式作表语，常说明主语的内容、性质、特征。
如：1 .2 .三、用作宾语1.可以接带的动词不定式作宾语的动词主要有：要求选择同意(, , )，期望决定学习(, , , )，宁可假装知道(, , )，希望想要愿意(, , / )。
如：1) .2) .3) Mexico.2.动词, , , , , ...，介词结构...可用疑问词带的不定式短语作宾语，但后面的不定式不带。
如：1)2) .3.动词, , , 等后面，可以用作形式宾语代替真正的宾语——动词不定式，句子结构是 / / / ... . / ...。
如：I .4.既可接动词不定式又可接形式作宾语，意思差别不太大的动词有, , , 等。
一般说来，动词不定式表一次、数次的具体动作、将来动作或动作的全过程，形式表习惯性的连续动作。
但是这种区别并不很严格，特别是美国英语，即使是习惯性的动作也可以用动词不定式。
如：1) I .2) I .用了进行时态，后面只接不定式作宾语，表示事情刚开始，还要继续下去。
3) I .感知动词, , 等一般不用进行时态。
5.后接动词不定式或形式作宾语，意思差别较大的动词有, 等。
后接不定式作宾语，表动作尚未发生；后接形式作宾语，表动作已经发生。
动词不定式讲解,专项练习及答案
初中英语语法（动词不定式）1．不定式的基本形式与结构动词不定式指通常由to加上动词原形(如to write) 所构成的一种非限定性动词形式，但在有些情况下to能够省略。
动词不定式有实行体和完成体(如上to be writing，to have written)，也有被动态(如to be written)，所有的主动词，不管是及物动词还是不及物动词，也不管是动作动词还是状态动词，都有不定式形式。
助动词除be和have外，没有不定式形式。
动词不定式在语法功能上可作主语、宾语、表语、定语和状语。
2．不定式的用法1)不定式结构作主语1.Te get contact with his family in Taiwan made him extremely happy since they separated more than 40 years ago．2.To finish that task in such a short time is really a challenge．在上述情况下，假如不定式较长，显得头重脚轻，则可由代词让作形式主语(形式主语it不可由that或this等其他代词代替)，而将不定式放到后面。
如：1.It made him extremely happy to get contact with his family in Taiwan since they separated more than 40 years ago．2.John admitted that it is always difficult for him to be on time．不定式结构所表示的动作是谁做的，即不定式的逻辑主语，通常能够通过for sb. to do sth. 结构表达：1.It is quite important for us to read good books during a general review．2.It is not difficult fot those talented students to pass the exam.在某些形容词(如careless，clever，considerate，foolish，good，impolite，kind，naughty，nice，silly，stupid等)作表语时，不定式后能够加of来引导出其逻辑主语：1.It is very kind of you to tell me the truth．2.It is stupid of him to do such a silly thing．2)不定式作宾语不定式作宾语有两种：一种是及物动词后直接跟带to的不定式，另一种是“及物动词+疑问词+带to的不定式。
初二英语动词不定式用法小结及练习
初二英语动词不定式用法小结动词不定式是动词的一种特殊形式，它没有人称和数的变化，在句子中不能做谓语；它由“to+动词原形”构成，其否定形式是“notto+动词原形”.在句子中可作主语、表语、宾语、宾语补足语、定语和状语等句子成分。
为使同学们更好地掌握其用法，现总结如下：一、动词不定式作主语动词不定式作主语，例如To think of the animals in danger is sad .为避免句子的头重脚轻，常用it作为形式主语，而真正的主语动词不定式后置，如It is sad to think of the animals in danger .常用句型:It +be+adj./n to do sth./It takes sb. some time to do sth.二、动词不定式作宾语一些动词，如want, decide, hope, ask, agree, choose, learn, plan, need, teach, prepare,等，常接动词不定式作宾语。
应注意有些动词后面可接不定式作宾语，也可接动名词作宾语，但所表达的意义不同。
常见的有：（1）stop to do sth.停下来去做另一件事；stop doing sth. .停止正在做的事（2）try to do sth.尽力做某事；try doing sth.尝试做某事（3）remember/forget to do sth.记住／忘记去做某事；remember/forget doing sth.记得／忘记做过某事。
下列动词（enjoy finish keep mind practice spend advise suggest allow）后面不能用不定式，用动名词作宾语三、动词不定式作宾语补足语有些动词，如tell, ask, want, invite, teach, like, call等可接带to的动词不定式作宾语补足语，构成tell/ask/want /call/invite sb. to do sth.结构。
中考英语动词不定式及其用法讲解+练习
中考英语动词不定式及其用法讲解+练习1.动词不定式的基本概念：动词不定式的基本形式是“to+动词原形”，有时可以不带to。
动词不定式没有人称和数的变化，在句中不能做谓语，但可以有自己的宾语和状语。
动词不定式跟它的宾语和状语构成了不定式短语，例如：to read the book, to speak at the meeting等。
2.动词不定式的用法：动词不定式具有名词，形容词和副词的特性，因此可在句中作主语，表语，宾语，宾语补足语，状语和定语。
句子用法：作主语：eg:1)To take part in sports is important.2)To see is to believe.动词不定式做主语时常常由it来代替它，做形式主语，而动词不定式放在句末。
eg: It’s great to see you again.It is important to learn English well.It was rewarding to take part in this exchange programmeIt will take us a month to go on study trip to New York.It is necessary for governments to control the population growth.做表语：eg：The best way is to pratice.My dream is either to be a diplomat or to be a teacher of English .A popular use of the computer is to send a e-mail.Her wish is to become a famous star.The best way is to read the play before you see it.做宾语：eg: We are talking about how to solve the problem.I think it not difficult to keep reading English every morning.做宾补：eg: We all expect him to win the contest.Our teacher told us to listen carefully in class.注意：感官动词，或使役动词+宾语+无to的不定式Is Jack in the library ?Maybe I saw him go out with some books just now.Let those in need understand that we will go all out to help them.做定语：Liu Yang is the Chinese woman astronaut to enter the space.You are the last one to win the price.In the future , human will have less work to do.Why don’t you go out to play Rose?I’m afraid I can’t . I have a lot of homework to do.做状语：动词不定式做状语可以修饰动词，一般在句中做原因，目的和结果状语，动词不定式做状语可单独放在句首，句中或句末。
最全的动词不定式的用法汇总及不定式专项训练题
不定式用法汇总动词不定式有带to的不定式和省略to的不定式两种。
动词不定式不能做句子的谓语，但它具有动词的特征，可以有自己的宾语、状语及逻辑主语。
一、动词不定式的特征1、及物动词的不定式形式，其后可以跟宾语。
No one knows why he agreed to do the film.It is very important to finish your homeword in time.2、不定式可以被状语修饰He aksed me to read the letter aloud.She told me to drive the car carefully.3、不定式没有人称和数的变化，不受主语的人称和单复数的限定或影响。
She likes to play the piano.I hope to finish reading the book tonight.4、不定式的复合结构的构成1）It is+adj+ for sb to do sth.在这个结构中，形容词说明不定式的特征，例如：It's really difficult for me to learn English.2) It is+adj+ of sb to do sth.在这个结构中，形容词说明逻辑主语的的特征，例如：It's impolite of you to visit someone without telling him in advance.二、不定式的时态与语态1、不定式的一般式一般式表示的动作通常与谓语动词表示的动作同时发生或者在谓语动词表示的动作之后发生。
I often hear my neighbour play the piano in the next room. 同时发生I hope to see you next week.之后发生2、不定式的进行式不定式的进行式表示的动作一般与谓语动词表示的动作同时发生。
动词不定式练习题及讲解
动词不定式用法要点讲解一、作主语动词不定式作主语时，句子的谓语动词常用单数，其位置有以下两种：(1)把不定式置于句首。
如：To get there by bike will take us half an hour.(2)用it作形式主语，把真正的主语不定式置于句后，常用于下列句式中。
如：①It＋be＋名词＋to doIt's our duty to take good care of the old.②It takes sb+some time+to doHow long did it take you to finish the work?③It＋be＋形容词＋for sb＋to doIt is difficult for us to finish writing the composition a quarter of an hour.④It＋be＋形容词＋of sb＋to doIt is stupid of you to write down everything the teacher says.⑤It seems(appears)＋形容词＋to doIt seemed impossible to save money.二、作宾语⒈不定式作宾语①以下动词后，只能跟不定式作宾语。
如：agree,ask,aim,arrange,choose,decide,demand,expect,fail ,help,hope,lean,longmanage,offer,plan,prepare,pretend,promise,refuse,wish等，这些词大部分可接th at引导的从句。
如：When our visit to the farm was over, we expected to start back on foot.When our visit to the farm was over, we expected that we would start back on foot.②当复合宾语中的宾语是不定式时，先用形式宾语it代替不定式，把不定式置于补语之后，即：主语＋动词＋it＋补语＋to do句式。
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英语动词不定式用法动词不定式是由“不定式符号to+动词原形”构成的一种非谓语动词结构。
有些动词不定式不带to，动词不定式可以作句子的主语、表语、宾语、定语、补语、状语或单独使用。
不定式保留动词的某些特性，可以有自己的宾语、状语等。
动词不定式和它后面的宾语、状语等一起构成短语，叫作不定式短语。
一、用作主语直接把动词不定式置于句首的情况不多，多数情况用it作形式主语，把真正的主语——动词不定式置于句末，特别是不定式短语较长时。
动词不定式作主语，谓语动词用第三人称单数形式。
带疑问词的不定式短语作主语常置于句首，复合不定式结构作主语常置于句末。
如：1. I t is our duty to try our best to deal with these problems.2.The head teacher said it was necessary to talk with his mother.3.How to learn English well is important.4.To see is to believe.(眼见为实；百闻不如一见)二、用作表语动词不定式作表语，常说明主语的内容、性质、特征。
如：1.The best way is to join an English club.2.The first thing is to listen to the teacher carefully.三、用作宾语1.可以接带to的动词不定式作宾语的动词主要有：要求选择同意(ask, choose, agree)，期望决定学习(expect, hope, decide, learn)，宁可假装知道(prefer, pretend, know)，希望想要愿意(wish, want, would like / love)。
如：1)We decided to talk to some students about why they go there.2)He prefers to eat white bread and rice.3)Id love to visit Mexico.2.动词decide, know, learn, show, teach, tell...，介词结构on...可用疑问词带to的不定式短语作宾语，但why后面的不定式不带to。
如：1)Could you please tell me where to park my car?2)It gives advice on what to do in lots of different situations.3.动词feel, find, make, think等后面，可以用it作形式宾语代替真正的宾语——动词不定式，句子结构是...feel / find / make / ... it+adj. / n.+to do...。
如：I find it difficult to remember everything.4.既可接动词不定式又可接ving形式作宾语，意思差别不太大的动词有begin, start, like, love 等。
一般说来，动词不定式表一次、数次的具体动作、将来动作或动作的全过程，ving形式表习惯性的连续动作。
但是这种区别并不很严格，特别是美国英语，即使是习惯性的动作也可以用动词不定式。
如：1) Then I started to watch Tv.2) I am beginning to understand my parents.begin用了进行时态，后面只接不定式作宾语，表示事情刚开始，还要继续下去。
3) I like to eat vegetables.感知动词like, love, know等一般不用进行时态。
5.后接动词不定式或ving形式作宾语，意思差别较大的动词有forget, remember等。
后接不定式作宾语，表动作尚未发生；后接ving形式作宾语，表动作已经发生。
stop to do停下来做另外一件事，to do是目的状语；stop doing停止做、不做当前这件事，doing是宾语。
try todo尽力做，try doing试试看；go on to do接着做另外的事，go on doing继续做原来的事。
如：1)When I left home, I forgot to bring it with me. 2)I stopped using them last year.四、用作定语1.句子的主语或宾语是动词不定式的逻辑主语，不定式与其所修饰的名词、代词等存在逻辑的动宾关系.1)I have so many clothes to wash today.2)I can’t think of any good advice to give her. 3)We have no houses to live in.2.动词不定式所修饰的名词是place, time, way等时，不定式与这些名词呈现出动状关系或同位关系。
如：1)He needs time to do homework.2) He wants to know the best way to travel around the city.3.在“there be...”句型里，句子的主语是动词不定式动作的对象：1)There’s just so much to see and do here.2)... but there are still many things to do there.五、用作宾语补足语1.带to的动词不定式作宾语补足语的动词主要有：要求允许提议(ask, allow, , advise)，期望邀请鼓励(expect, , invite, encourage)，教导告诉想要(teach, tell, want)，等待希望愿意(wait for, wish, would like / love)。
如：1)Id invite her to have dinner at my house.2 We should allow the children to choose their own clothes.2.动词不定式作补语，在主动语态句里不带to，被动语态句里带to时多数动词是感官动词和使役动词，包括四“看”：look at, observe, see, watch，三“让”：have, let, make，二“听”：hear, listen to，一“感觉”：feel，一“注意”：notice。
如：1)This picture makes me feel excited！2)We saw Liu Yu play baseball last week.3.help后接动词不定式作补语，to可带可不带。
1) they can help you to learn English. 2)Using email English helps you write quickly.六、用作状语1.目的状语，置于句首或句末，置于句首时常表示强调。
如：1)In order to catch the early bus, she got up very early.2)A group of young people got together to discuss this question.3)She came to this city to visit her daughter.2.原因状语，多见于“sb.+be+adj.+to do...”结构句中。
如：1) I feel very lucky to have him.2) he ran out of money to buy old bikes.3.结果状语，多见于“too...to”，“enough to...”结构句中。
如：1) I’m too tired to do it well.2)The room is big enough for three people to live in.七、动词不定式的复合结构动词不定式的复合结构是“for / of sb. to do sth.”，for / of引出不定式动作的逻辑主语。
这种结构在句子中可以作主语、宾语、表语、定语、状语等。
不定式复合结构的介词用for还是of，主要决定于前面形容词的性质。
一般说来，of前面的形容词是careful, clever, foolish, good, kind, nice, wise等，既说明人的特性，又说明不定式动作的特性。
for前面的形容词是dangerous, difficult, easy, hard, heavy, important, interesting, necessary等，一般说明不定式动作的特性，前面如果是名词用for。
如：1.It’s a good idea for parents to allow children to study in groups during the evening.2.It’s wiseof him to do it well.3)Is it interesting for the baby to play with a pet dog?八、带疑问词的不定式短语动词不定式前面可以带疑问代词what, which, who或疑问副词how, when, where, why等。
这种结构起名词的作用，在句子里用作宾语、主语、表语等，或者单独使用。
要注意的是，why后面的不定式不带to。
如：1.用作句子的成分。
1)I don’t know what to try next. (作宾语)2)Where to go is not decided yet.(作主语)2.单独使用时相当于一个特殊疑问句。
1)What to do next?(=What will we / you do next?2)Why go there?(=Why do we / you go there?九、动词不定式的否定式不定式的否定式是not / never to do...，不带to的不定式的否定式是not / never do...如：1.They decide not to talk to each other.2.His parents tell him never to play soccer in the street.单项选择：（）1. The teacher told them ________ make so much noise.A. don’tB. notC. will notD. not to（）2. My mother often tells me _______so many mistakes.A. not to makeB. to not makeC. do n’t makeD. not make（）3. Tell him _______ the window.A. to shut (关)notB. not to shutC. to not shutD. not shut（）4. 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（）5. Mrs Smith warned(警告) her daughter ________ after drinking.A. never to driveB. to never driveC. never drivingD. never drive（）6. The doctor asked the patient ____rich food after the operation(手术).A. to eat notB. eating notC. not to eatD. not eating（）7. The workers want us ________ together with them.A. workB. workingC. to workD. worked（）8. I saw him _______ out of the room.A. goB. wentC.is goingD. goes（）9. He often makes his little sister _____,A. cryB. cryingC. criedD. to cry（）10 There’re so many kinds of new bikes on sale that I can’t make up my mind _____ to buy.A. whatB. whichC. howD. where（）11. He can’t decide ______ to stay or not.A. whetherB. ifC. eitherD. if he will（）12. --- The light in the office is still on. --- Oh, I forgot _______.A. turning it offB. turn it offC. to turn it offD. turned it off（）13. We agreed _________ here.A. metB. meetingC. to meetD. meet（）14. Frank is the kind of person who people like to ________.A. make friend withB. make friends ofC. make friendsD. make friends with（）15. Go on ________ the other exercise after you finishthis one.A. to doB. doingC.doesD. did（）16. She reached the top of the hill and stopped _______ on a big rockA. restedB. restingC. to restD. rest（）17. Tom kept quiet about the accident because he was afraid of____ his job. A. lose B. to lose C. losing D. lost（）18. I need a day or two ________.A. to think it overB. to think overC. of thinking（）19. He was too excited _________.A. speakB. to speakC. not to speakD. speaking（）20. I’m hungry. Get me something _________.A. eatB. to eatC. eatingD. for eating（）21. --- 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（）22. I asked him to _______ me a few minutes so that we could go over all the problems.A. spendB. spareC. saveD. share（）23. They won’t let his mother _______him in that way.A. to treatB. treatedC. treatD. treats（）24. I’m sorry I forgot ______your dictionary. Let’s borrow one from Li Ming. A. to take B. taking C. to bring D. bringing（）25. She couldn’t decide which restaurant _______.A. to have lunchB. to eatC. to eat atD. eating at（）26. Don’t forget _________ the letter .A. to sendB. sendC. sendingD. sent（）27. The chair looks very old, I want a new one _________ .A. sitB.to sit onC. satD.sit on（）28. Is ______ necessary to return the book tomorrow ?A. thisB. thatC. itD. which（）29. I’m afraid they wou ld not allow（允许）him ________ here .A. to smokeB. smokingC. smokesD. smoke（）30. Mother told me ________ the water before I drank it .A. boilingB. boiledC. boilD. to boil（）31. On my way home , I stopped _______ some food .A. buyB. to buyC. buyingD. bought动词不定式练习：一. 根据上句意思完成下句，使两句意思相近或相同，每空一词。