易错点8 非谓语动词之动词不定式
在中考语法项目中，主要考查动词不定式作宾语、宾语补足语、目的状语。动词不定式由“to+动词原形” 构成，有时to省略，直接由动词原形构成。否定式由“not to+动词原形” 构成。
如：We decided to go on hiking though we were tired. 虽然我们很累，但是我们决定继续远足。
The girl tried not to wake up her mother. 这女孩尽量不吵醒她妈妈。
动词不定式作宾语
（1）接不定式作宾语的动词（“动词+to do” 结构）常见的有：
learn 学会 plan 计划 decide 决定 try 尽力 choose 选择 agree 同意
refuse 拒绝 pretend 假装 offer 主动 would like / want 想要 expect 期望
hope / wish 希望 promise 承诺 afford 负担得起 prefer 喜欢
help 帮助(help to do / help do) like 喜欢(like to do / doing)
continue 继续(continue to do / doing) begin / start 开始(begin / start to do / doing)
如：I would like to have a sandwich. 我想要吃一个三明治。
（2）动词不定式作宾语，置句末，前面用it指代不定式，it是形式宾语。
如：We found it difficult to understand what you said. 我们发现很难理解你所说的话。
（3）有的动词在不定式前可加上疑问词（who，what，which等）作宾语（即“动词+疑问词+to do” 结构），常见的有：show 表明、指示；know 知道；tell 告诉；teach 教；learn 学习；decide 决定。
如：Larry didn’t know how to tell her the bad news. 拉里不知道如何告诉她这个坏消息。
1．（24-25九年级下·湖南衡阳·开学考试）—Would you like ________ camping with me
—I’d like to. But I’m busy ________ my homework.
A．to go; to do B．to go; doing C．going; to do
2．（2024·湖北黄石·模拟预测）Students should learn how ________ problems.
A．to solve B．solve C．solving D．solved
3．（24-25九年级下·江苏宿迁·开学考试）I think _________ important _________ English every morning.
A．that; keep reading B．it’s; keeping reading
C．that; to keep read D．it; to keep reading
4．（2024·山东青岛·模拟预测）I don’t know what ________ for my little sister.
A．reading B．buying C．to read D．to buy
5．（24-25七年级上·上海浦东新·期末）Remember ________ the lights when you leave.
A．turn on B．to turn on C．turn off D．to turn off
6．（2025·上海黄浦·一模）Although her schedule is busy, Lucy manages ________ her homework on time.
A．to finish B．finishing C．finish D．to finishing
7．（2025·上海闵行·一模）They happened ________ the famous Chinese tennis player at the airport yesterday.
A．saw B．seeing C．see D．to see
8．（24-25九年级上·云南曲靖·期末）—To go green, what do you plan ________
—I’ll ride to work instead of driving. I’ll also recycle things like bottles and papers.
A．do B．to do C．doing D．done
9．（24-25九年级上·天津河北·期末）My neighbour has promised ________ after my pet cat when I go away on business.
A．looked B．looking C．to look D．looks
10．（24-25九年级上·福建福州·阶段练习）—If you see the cartoon film, you will be made to laugh.
—Really I can’t wait ________ it.
A．see B．to see C．seeing
动词不定式作宾语补足语
（1）接不定式作宾语补足语的动词（动词+sb.+to do结构，否定式“动词+sb.+not to do” ）常见的有：
tell 告诉 ask 请 order 命令 warn 警告 teach 教 want 想要
wish 希望 expect 期望 encourage 鼓励 allow 允许 invite 邀请 advise 建议
require 要求 force 强迫
如：Do you want me to find out the phone number 你想要我找出那个电话号码吗？
（2）有些及物动词，接不定式作宾语补足语时（动词+sb.+do ），要省略to。这类及物动词常见的有：
let 让 make 使 have 使 see 看见 watch 注视 hear 听到
notice 注意到 feel 感觉起来
被动语态中要还原to，如 make sb. do被动语态变为 sb. be made to do。
如：I saw him read in the library yesterday. 我昨天看到他在图书馆阅读
He was seen to read in the library yesterday. 他被看见昨天在图书馆阅读。
11．（2025·吉林·模拟预测）My mother often asks me ________ my homework before I watch TV.
A．finish B．to finish C．finishing D．finished
12．（2024·上海·模拟预测）Will the special period encourage students________ more independent
A．be B．being C．to be D．been
13．（24-25九年级·四川雅安·自主招生）They lived a hard life and were often made ________ for over ten hours a day.
A．work B．to work C．to working D．worked
14．（24-25九年级·山东济南·自主招生）Kids like reading stories which can make them ________.
A．laugh B．to laugh C．laughing D．laughs
15．（24-25七年级下·全国·课后作业）Li Xin’s father wants her ________ the soccer club, but she likes volleyball.
A．join B．joins C．to join D．joining
16．（2025·安徽·模拟预测）The new law requires people ________ household garbage into four categories.
A．sort B．to sort C．sorting D．sorted
17．（2024·福建泉州·模拟预测）Nowadays, many tourist attractions allow visitors ________ free tickets by reciting poems.
A．getting B．get C．to get
18．（24-25九年级上·吉林长春·期末）Teenagers are often warned ________ away from the Internet. It’s bad for their eyes.
A．keep B．keeps C．kept D．to keep
19．（2025·上海金山·一模）Mr. Jones expected the insurance company ________ him 300,000 dollars for the vase.
A．pay B．pays C．to pay D．not to pay
20．（24-25九年级上·云南昭通·期末）Our teacher tells us ________ the habit of keeping a diary.
A．develop B．develops C．developing D．to develop
3. 动词不定式作目的状语
不定式作目的状语，可放在句首或句末。to表示目的、为了。
如：To learn math well, you must do more exercises. 为了学好数学，你必须多做练习。
We came here to ask you for help. 我们来这是为了向你寻求帮助。
21．（2024·安徽亳州·模拟预测）—Ms Brown, what should we do ________ stupid mistakes in the coming English exam
—Be more careful.
A．avoid make B．avoiding making C．to avoid making D．avoid making
22．（2023·江苏南京·中考真题）During the holiday of the Dragon Boat Festival, many people gather in Mochou Lake Park ________ the dragon boat race.
A．watch B．to watch C．watches D．watched
23．（24-25九年级下·黑龙江哈尔滨·开学考试）—How can I improve my writing skills
—________ your writing skills, you can keep a diary.
A．Improve B．To improve C．Improving
24．（2024·吉林长春·模拟预测）________ energy, the city will spend more money developing its recycling industry.
A．Save B．To save C．Saving D．Saved
25．（23-24九年级下·吉林长春·开学考试）_______ electricity, please turn off the lights when you leave the room.
A．Save B．Saving C．To save D．Saved
26．（25-26九年级上·福建泉州·期末）China has carried out some policies ________ the environmental problems.
A．to solve B．solve C．solving
27．（2025·上海虹口·一模）The Italian organizations have made a plan ________ more tourists to the landmarks.
A．attract B．to attract
C．attracting D．attracted
28．（24-25九年级上·吉林长春·阶段练习）Students work very hard every day ________ for the senior high school entrance exam.
A．to preparing B．prepare C．to prepare D．prepared
29．（24-25九年级上·江苏南京·阶段练习）What do you think ________ protect our environment
A．should we do B．we should do C．should we do to D．we should do to
30．（24-25九年级上·吉林长春·期末）If each of us makes an effort ________ something meaningful, our society will be increasingly better.
A．do B．to do C．doing D．to be done
4. 不定式的常见句型
31．（23-24九年级上·山东滨州·期中）It took me half an hour ______ to the supermarket yesterday morning.
A．walks B．walking C．to walk D．walked
32．（24-25九年级上·全国·课后作业）Jim was the first ________ at the finishing line and Dave was the next.
A．arrive B．arriving C．to arrive D．to arriving
33．（20-21九年级上·江苏泰州·阶段练习）He made it _______ for people _______ a happy life by improving the environment.
A．easy; live B．easier; to live C．easier; living D．easily; to live
34．（24-25九年级上·湖南·期末）—The story of Chang’e is touching!
—Yes, and it’s necessary for us students ________ traditional Chinese stories.
A．learning B．learn C．to learn
35．（23-24九年级下·全国·课前预习）It is important ________ paper to save the trees.
A．recycle B．to recycle C．recycled D．recycling
36．（22-23九年级下·全国·单元测试）It’s necessary ________ everyone ________ the environment.
A．for; protect B．of; to protect
C．for; protecting D．for; to protect
37．（22-23九年级上·全国·课后作业）It’s our duty ________ our hometown clean and beautiful. We must do something for it．
A．keeping B．keeps C．to keep
38．（24-25九年级上·吉林长春·期末）They found it easy ________ with each other.
A．communicate B．to communicate C．communicating D．in communicating
39．（2025·甘肃定西·一模）It is very kind ________ you ________ me.
A．of; to help B．of; helping C．for; to help D．for; helping
40．（24-25九年级下·吉林长春·开学考试）I’m too tired ________ farther, so let’s take a break.
A．walking B．to walk C．walk D．to walking
41．（2024·江苏南通·中考真题）________ more about rare wild animals, I spent some time searching online last night.
A．To learn B．Learning C．Learned D．Learn
42．（2024·黑龙江牡丹江·中考真题）________ our students responsible and independent, military training (军训) has become tradition in China.
A．Making B．To make C．Make
43．（2024·天津·中考真题）People may use different body language _________ the same feelings.
A．show B．to show C．showed D．shows
44．（2024·江苏扬州·中考真题）China has made great efforts ________ other countries build high-speed railways.
A．help B．to help C．helping D．helped
45．（2025·海南省直辖县级单位·一模）People may use different body language ________ the same feelings.
A．show B．shows C．to show
46．（2024·甘肃武威·二模）I prefer to have ______ one of the two skirts ______ some money for a dictionary.
A．the cheapest, to save B．a cheaper, to saving
C．a cheaper, to save D．the cheaper, to save
47．（24-25九年级下·江苏泰州·阶段练习）It used to be quite pleasant ______ children to swim in this river, but now even fish are impossible ______ in it as it’s been heavily polluted.
A．of, to see B．for, to see C．of, to be seen D．for, to be seen
48．（24-25九年级下·上海·阶段练习）The rich income enables our family ________ a happy life.
A．to live B．living C．live D．lived
49．（24-25九年级下·福建福州·开学考试）A two-day global summit is underway (在进行中) in Paris ________ the future of artificial intelligence.
A．discuss B．to discuss C．discussing
50．（24-25九年级下·黑龙江哈尔滨·开学考试）My younger brother failed ________ the exam even though he studied very hard.
A．passed B．pass C．to pass
51．（24-25九年级下·黑龙江哈尔滨·开学考试）—Mr. Wang, I have trouble ________ the new text.
—Remember ________ it three times before you begin to understand it.
A．to understand; to read B．understanding; reading C．understanding; to read
52．（24-25九年级·山东菏泽·自主招生）—Do you like ________ a teacher
—Sure. But my parents ________ me to be a doctor when I was a young girl.
A．to be; hoped B．being; hoped C．being; wished D．to be; wish
53．（24-25九年级下·四川泸州·开学考试）I can’t send an e-mail. Would you please show me ________
A．what to do B．where to go
C．when to do D．how to do it
54．（24-25九年级上·福建泉州·期末）Julia promised ______ me an e-mail after she went to England, but she didn’t do that.
A．send B．to send C．sending
55．（24-25九年级上·陕西西安·期末）The movie makes me ______ sad because workers are made ______ for 20 hours a day.
A．feel; to work B．feel; work C．to feel; to work D．to feel; work
56．（2025·上海杨浦·一模）The police reminded the public ________ out for pickpockets in crowded areas.
A．look B．looked C．to look D．looking
57．（24-25八年级上·吉林长春·期末）Kate, I’m ________ tired ________ walk anymore. Let’s have a rest.
A．so; that B．such; that C．enough; to D．too; to
58．（24-25九年级上·吉林长春·期末）Tom is too heavy. He plays sports every day ________ weight.
A．Loses B．lose C．to lose D．lost
59．（24-25七年级上·四川乐山·开学考试）Let’s ________ there, please.
A．to go to B．go C．going D．went
60．（23-24九年级上·江西南昌·期末）When people want to relax themselves, they prefer ________ TV or listen to music rather than ________ out.
A．watching; hanging B．watching; to hang C．to watch; hang D．to watch; hanging
61．（23-24九年级上·四川泸州·期末）He failed ________ up to the top of the mountain because he was too tired.
A．Climbed B．climb C．to climb D．climbing
62．（24-25七年级上·全国·课后作业）There are many eggs in the fridge. We _________ buy any more.
A．don’t need B．needn’t to C．don’t need to D．need to
63．（24-25八年级上·江苏扬州·期中）Amy had a birthday party last Saturday and she invited us ________ it.
A．to join B．join C．to join in D．to take part
64．（24-25九年级上·江苏南通·期中）They tried their best ________ the ship ________ down. But failed.
A．to prevent, going B．prevented, from going
C．prevent, going D．to prevent, from going
65．（2024·江苏南京·三模）The ORBIS doctors did everything ________ the girl with eye problems.
A．save B．saved C．to save D．saving
66．（23-24九年级上·江苏无锡·期中）—What’s wrong with you You looked worried.
—I have many problems to solve. But I don’t know ________ first.
A．where to deal with B．when to deal with
C．how to deal with D．which to deal with
67．（24-25九年级上·浙江宁波·开学考试）It is important for everyone ________ water and electricity in his life.
A．save B．saving C．to save D．saved
68．（2024·海南·中考真题）In China, family members get together ________ the Mid-Autumn Festival.
A．to celebrate B．celebrate C．celebrated
69．（23-24九年级上·江苏无锡·期中）—Have you decided how to go to Nanjing
—Not yet. I suggest ________ there while my parents advise me ________ a train there.
A．driving; taking B．to drive; to take C．driving; to take D．to drive; taking
70．（23-24九年级下·黑龙江佳木斯·开学考试）He decided ________ school late again.
A．to come B．don’t come C．not to come to
用所给词的正确形式填空
71．（24-25九年级下·湖北武汉·阶段练习）The Internet makes it easier for us (find) information.
72．（24-25九年级下·重庆·阶段练习）We are supposed to know what (wear) in different situations.
73．（2025·吉林·模拟预测）My mother told me (not play) computer games too much.
74．（24-25九年级下·山东济南·阶段练习）After years of hard work and saving, they can finally afford (buy) a house in the city.
75．（24-25九年级下·甘肃武威·开学考试）Jim is learning how (behave) at the dinner table in China.
76．（24-25九年级下·重庆·开学考试）My parents prefer (encourage) me whenever I am down.
77．（2024·江苏无锡·中考真题）The children did a lot of research in the lab (finish) the science project.
78．（23-24九年级下·全国·课后作业）People should do more things (protect) these monkeys. They are in danger.
79．（24-25九年级上·江苏无锡·期末）Our teacher reminds us (make) a study plan to manage our time better.
80．（2025九年级·湖南·专题练习）Jerry really hopes (improve) his English, so he keeps practising it every day.
21世纪教育网(www.21cnjy.com)易错点8 非谓语动词之动词不定式
在中考语法项目中，主要考查动词不定式作宾语、宾语补足语、目的状语。动词不定式由“to+动词原形” 构成，有时to省略，直接由动词原形构成。否定式由“not to+动词原形” 构成。
如：We decided to go on hiking though we were tired. 虽然我们很累，但是我们决定继续远足。
The girl tried not to wake up her mother. 这女孩尽量不吵醒她妈妈。
动词不定式作宾语
（1）接不定式作宾语的动词（“动词+to do” 结构）常见的有：
learn 学会 plan 计划 decide 决定 try 尽力 choose 选择 agree 同意
refuse 拒绝 pretend 假装 offer 主动 would like / want 想要 expect 期望
hope / wish 希望 promise 承诺 afford 负担得起 prefer 喜欢
help 帮助(help to do / help do) like 喜欢(like to do / doing)
continue 继续(continue to do / doing) begin / start 开始(begin / start to do / doing)
如：I would like to have a sandwich. 我想要吃一个三明治。
（2）动词不定式作宾语，置句末，前面用it指代不定式，it是形式宾语。
如：We found it difficult to understand what you said. 我们发现很难理解你所说的话。
（3）有的动词在不定式前可加上疑问词（who，what，which等）作宾语（即“动词+疑问词+to do” 结构），常见的有：show 表明、指示；know 知道；tell 告诉；teach 教；learn 学习；decide 决定。
如：Larry didn’t know how to tell her the bad news. 拉里不知道如何告诉她这个坏消息。
1．（24-25九年级下·湖南衡阳·开学考试）—Would you like ________ camping with me
—I’d like to. But I’m busy ________ my homework.
A．to go; to do B．to go; doing C．going; to do
【答案】B
【详解】句意：——你愿意和我一起去露营吗？——我想去，但是我忙着做作业。
考查非谓语动词。would like to do sth.“想要做某事，愿意做某事”；be busy doing sth.“忙于做某事”。故选B。
2．（2024·湖北黄石·模拟预测）Students should learn how ________ problems.
A．to solve B．solve C．solving D．solved
【答案】A
【详解】句意：学生应该学会如何解决问题。
考查动词不定式。特殊疑问词+动词不定式，具有名词的性质，在句子中做主语或宾语。how to solve problems“如何解决问题”，在句中作动词learn的宾语。故选A。
3．（24-25九年级下·江苏宿迁·开学考试）I think _________ important _________ English every morning.
A．that; keep reading B．it’s; keeping reading
C．that; to keep read D．it; to keep reading
【答案】D
【详解】句意：我认为每天早晨坚持读英语很重要。
考查非谓语动词和it作形式宾语。分析句子结构可知，该句考查句型“主语+think it+形容词+to do sth”，其中it是形式宾语，to do sth是真正的宾语，表达“认为做某事是……的”。keep doing“坚持做某事”，故选D。
4．（2024·山东青岛·模拟预测）I don’t know what ________ for my little sister.
A．reading B．buying C．to read D．to buy
【答案】D
【详解】句意：我不知道给我的妹妹买什么。
考查非谓语动词及动词辨析。reading阅读，现在分词或动名词形式；buying买，现在分词或动名词形式；to read阅读，动词不定式；to buy买，动词不定式。根据“I don’t know what … for my little sister.”可知，此处为“我不知道给妹妹买什么”，应用动词buy；在句中，“疑问词what + to do”作know的宾语，即what to buy。故选D。
5．（24-25七年级上·上海浦东新·期末）Remember ________ the lights when you leave.
A．turn on B．to turn on C．turn off D．to turn off
【答案】D
【详解】句意：你离开时记得关灯。
考查动词短语。turn on打开；turn off关上。remember to do sth.意为“记得去做某事”，remember doing sth.意为“记得做过某事”；根据“when you leave”可知此处指“记得关灯”，应用remember to do sth.这一结构，故选D。
6．（2025·上海黄浦·一模）Although her schedule is busy, Lucy manages ________ her homework on time.
A．to finish B．finishing C．finish D．to finishing
【答案】A
【详解】句意：虽然露西的日程排得很满，但她还是设法按时完成了作业。
考查非谓语动词。manage to do sth.“设法做某事”。故选A。
7．（2025·上海闵行·一模）They happened ________ the famous Chinese tennis player at the airport yesterday.
A．saw B．seeing C．see D．to see
【答案】D
【详解】句意：昨天他们在机场碰巧遇到了那位著名的中国网球运动员。
考查动词不定式。saw看见，过去式；seeing看见，现在分词或动名词；see看见，动词原形；to see看见，动词不定式。happen to do sth.表示 “碰巧做某事”，happen to see 表示“碰巧看见”，符合题意，故选D。
8．（24-25九年级上·云南曲靖·期末）—To go green, what do you plan ________
—I’ll ride to work instead of driving. I’ll also recycle things like bottles and papers.
A．do B．to do C．doing D．done
【答案】B
【详解】句意：——为了绿色环保，你打算做什么？——我会骑车去上班，而不是开车。我也会回收瓶子和纸张等物品。
考查非谓语动词。根据“what do you plan … ”可知，此处为固定短语plan to do sth“计划做某事”，应用动词不定式。故选B。
9．（24-25九年级上·天津河北·期末）My neighbour has promised ________ after my pet cat when I go away on business.
A．looked B．looking C．to look D．looks
【答案】C
【详解】句意：我的邻居承诺在我出差的时候照顾我的宠物猫。
考查动词不定式。根据“My neighbour has promised...after my pet cat when I go away on business.”可知，该短语为promise to do sth.“承诺做某事”，所以该空应填to look。故选C。
10．（24-25九年级上·福建福州·阶段练习）—If you see the cartoon film, you will be made to laugh.
—Really I can’t wait ________ it.
A．see B．to see C．seeing
【答案】B
【详解】句意：——如果你看这部卡通电影，你会被逗笑的。 ——真的？我等不及要看了。
考查非谓语动词。see“观看”，动词原形；to see动词不定式；seeing动名词或现在分词。根据“can’t wait”可知，此处考查can’t wait to do sth.“迫不及待做某事”，固定搭配，因此这里应用动词不定式。故选B。
动词不定式作宾语补足语
（1）接不定式作宾语补足语的动词（动词+sb.+to do结构，否定式“动词+sb.+not to do” ）常见的有：
tell 告诉 ask 请 order 命令 warn 警告 teach 教 want 想要
wish 希望 expect 期望 encourage 鼓励 allow 允许 invite 邀请 advise 建议
require 要求 force 强迫
如：Do you want me to find out the phone number 你想要我找出那个电话号码吗？
（2）有些及物动词，接不定式作宾语补足语时（动词+sb.+do ），要省略to。这类及物动词常见的有：
let 让 make 使 have 使 see 看见 watch 注视 hear 听到
notice 注意到 feel 感觉起来
被动语态中要还原to，如 make sb. do被动语态变为 sb. be made to do。
如：I saw him read in the library yesterday. 我昨天看到他在图书馆阅读
He was seen to read in the library yesterday. 他被看见昨天在图书馆阅读。
11．（2025·吉林·模拟预测）My mother often asks me ________ my homework before I watch TV.
A．finish B．to finish C．finishing D．finished
【答案】B
【详解】句意：在完成作业以前我的妈妈让我不要看电视。
考查动词搭配。finish完成，动词原形；to finish动词不定式；finishing动名词；finished过去式和过去分词形式。ask sb. to do sth.是固定搭配，意为要求某人做某事，所以此处用动词不定式to finish。故选B。
12．（2024·上海·模拟预测）Will the special period encourage students________ more independent
A．be B．being C．to be D．been
【答案】C
【详解】句意：特殊时期会鼓励学生更加独立吗？
考查非谓语动词。encourage sb. to do sth.“鼓励某人做某事”，不定式作宾语补足语。故选C。
13．（24-25九年级·四川雅安·自主招生）They lived a hard life and were often made ________ for over ten hours a day.
A．work B．to work C．to working D．worked
【答案】B
【详解】句意：他们过去过着艰苦的生活，并且经常不得不每天工作超过十个小时．
考查被动语态。分析句子结构可知，were made为被动语态，make作使役动词时，后接省略to的不定式作宾补，构成句型make sb do sth．如果变成被动语态，to必须保留，不可以省略，即构成sb. be made to do sth.。故选B。
14．（24-25九年级·山东济南·自主招生）Kids like reading stories which can make them ________.
A．laugh B．to laugh C．laughing D．laughs
【答案】A
【详解】句意：孩子们喜欢阅读能让他们笑的故事。
考查非谓语动词。make sb. do sth.：使某人做某事，laugh此处作宾语补足语。故选A。
15．（24-25七年级下·全国·课后作业）Li Xin’s father wants her ________ the soccer club, but she likes volleyball.
A．join B．joins C．to join D．joining
【答案】C
【详解】句意：李欣的爸爸想要她加入足球俱乐部，但是她喜欢排球。
考查非谓语动词。want sb to do sth“想要某人做某事”，为固定短语。故选C。
16．（2025·安徽·模拟预测）The new law requires people ________ household garbage into four categories.
A．sort B．to sort C．sorting D．sorted
【答案】B
【详解】句意：新法律要求人们将生活垃圾分为四类。
考查动词形式。sort分类。require sb. to do sth.意为“要求某人做某事”，符合句意，应用动词不定式to sort作宾补。故选B。
17．（2024·福建泉州·模拟预测）Nowadays, many tourist attractions allow visitors ________ free tickets by reciting poems.
A．getting B．get C．to get
【答案】C
【详解】句意：如今，许多旅游景点允许游客通过朗诵诗歌获得免费门票。
考查非谓语动词。allow sb. to do sth.“允许某人做某事”，动词不定式作宾语补足语。故选C。
18．（24-25九年级上·吉林长春·期末）Teenagers are often warned ________ away from the Internet. It’s bad for their eyes.
A．keep B．keeps C．kept D．to keep
【答案】D
【详解】句意：青少年经常被警告要远离互联网，这对他们的眼睛有害。
考查非谓语动词用法。warn sb. to do sth.意为“警告某人做某事”，故空处需动词不定式。故选D。
19．（2025·上海金山·一模）Mr. Jones expected the insurance company ________ him 300,000 dollars for the vase.
A．pay B．pays C．to pay D．not to pay
【答案】C
【详解】句意：琼斯先生期望保险公司为这个花瓶赔付他30万美元。
考查非谓语动词。expect to do sth.意为“期望做某事”，固定词组。故选C。
20．（24-25九年级上·云南昭通·期末）Our teacher tells us ________ the habit of keeping a diary.
A．develop B．develops C．developing D．to develop
【答案】D
【详解】句意：我们的老师告诉我们要养成记日记的习惯。
考查非谓语动词。tell sb. to do sth.“告诉某人做某事”，是固定词组。故选D。
3. 动词不定式作目的状语
不定式作目的状语，可放在句首或句末。to表示目的、为了。
如：To learn math well, you must do more exercises. 为了学好数学，你必须多做练习。
We came here to ask you for help. 我们来这是为了向你寻求帮助。
21．（2024·安徽亳州·模拟预测）—Ms Brown, what should we do ________ stupid mistakes in the coming English exam
—Be more careful.
A．avoid make B．avoiding making C．to avoid making D．avoid making
【答案】C
【详解】句意：—— Brown女士，我们应该怎么做才能避免在即将到来的英语考试中犯愚蠢的错误？——更加认真。
考查动词短语和to do不定式作目的状语。动词短语“avoid doing”意为“避免做某事”；根据“what should we do...stupid mistakes”可知，此处是询问做什么才能避免犯错，表达目的，用to do不定式做目的状语，符合句意。故选C。
22．（2023·江苏南京·中考真题）During the holiday of the Dragon Boat Festival, many people gather in Mochou Lake Park ________ the dragon boat race.
A．watch B．to watch C．watches D．watched
【答案】B
【详解】句意：端午节假期期间，许多人聚集在莫愁湖公园观看龙舟比赛。
考查非谓语动词。根据“many people gather in Mochou Lake Park ... the dragon boat race”可知聚集在莫愁湖公园是为了观看龙舟比赛，表示目的“为了观看”，用“to watch”，故选B。
23．（24-25九年级下·黑龙江哈尔滨·开学考试）—How can I improve my writing skills
—________ your writing skills, you can keep a diary.
A．Improve B．To improve C．Improving
【答案】B
【详解】句意：——我怎样才能提高我的写作技巧？——为了提高你的写作技巧，你可以记日记。
考查非谓语动词。“...your writing skills”为“keep a diary”的目的，所以此处填写不定式形式作目的状语。故选B。
24．（2024·吉林长春·模拟预测）________ energy, the city will spend more money developing its recycling industry.
A．Save B．To save C．Saving D．Saved
【答案】B
【详解】句意：为了节约能源，该市将要花费更多钱发展回收工业。
考查动词不定式。根据“...energy, the city will spend more money developing its recycling industry.”可知，本句表达了“该市发展回收工业的目的是节约能源”；save意为“节约”，to save energy表示“为了节约能源”，不定式在句中作目的状语。故选B。
25．（23-24九年级下·吉林长春·开学考试）_______ electricity, please turn off the lights when you leave the room.
A．Save B．Saving C．To save D．Saved
【答案】C
【详解】句意：为了省电，离开房间时请关灯。
考查非谓语动词。分析题干可知，离开房间时关灯是为了省电，所以空处应用动词不定式作目的状语。故选C。
26．（25-26九年级上·福建泉州·期末）China has carried out some policies ________ the environmental problems.
A．to solve B．solve C．solving
【答案】A
【详解】句意：为了解决环境问题，中国实施了一些政策。
考查非谓语动词。to solve解决（不定式）；solve解决（动词原形）；solving 解决（动名词）。根据“China has carried out some policies…the environmental problems.”可知，实施政策的目的是为了解决环境问题，此处是用动词不定式表目的。故选A。
27．（2025·上海虹口·一模）The Italian organizations have made a plan ________ more tourists to the landmarks.
A．attract B．to attract
C．attracting D．attracted
【答案】B
【详解】句意：这些意大利组织制定了一项计划，以吸引更多的游客前往这些地标。
考查非谓语动词。attract“吸引”，made a plan“做计划”的目的是为了“吸引更多的游客”，所以用不定式作目的状语。故选B。
28．（24-25九年级上·吉林长春·阶段练习）Students work very hard every day ________ for the senior high school entrance exam.
A．to preparing B．prepare C．to prepare D．prepared
【答案】C
【详解】句意：学生们每天都很努力地为中考做准备。
考查非谓语动词。根据“Students work very hard every day ... for the senior high school entrance exam.”可知，此处表示目的，用动词不定式，故选C。
29．（24-25九年级上·江苏南京·阶段练习）What do you think ________ protect our environment
A．should we do B．we should do C．should we do to D．we should do to
【答案】D
【详解】句意：你认为我们应该做什么来保护环境？
考查宾语从句的语序及非谓语动词。think后接宾语从句，用陈述语序，排除AC；“保护环境”是目的，用动词不定式to protect，排除B。故选D。
30．（24-25九年级上·吉林长春·期末）If each of us makes an effort ________ something meaningful, our society will be increasingly better.
A．do B．to do C．doing D．to be done
【答案】B
【详解】句意：如果我们每个人都努力做一些有意义的事情，我们的社会将会越来越好。
考查动词不定式结构。make an effort to do sth“努力做某事”，固定搭配，空处用不定式结构。故选B。
4. 不定式的常见句型
31．（23-24九年级上·山东滨州·期中）It took me half an hour ______ to the supermarket yesterday morning.
A．walks B．walking C．to walk D．walked
【答案】C
【详解】句意：昨天早上我花了半个小时步行去超市。
考查动词不定式。根据“It took me half an hour…to the supermarket yesterday morning.”可知，句型结构为It took sb. some time to do sth.意为“花了某人时间去做某事”，因此此处应用动词不定式to walk作主语。故选C。
32．（24-25九年级上·全国·课后作业）Jim was the first ________ at the finishing line and Dave was the next.
A．arrive B．arriving C．to arrive D．to arriving
【答案】C
【详解】句意：吉姆第一个到达终点，戴夫是下一个。
考查动词不定式。the first one to do sth“第一个做某事的人”，固定用法，此处填动词不定式作后置定语。故选C。
33．（20-21九年级上·江苏泰州·阶段练习）He made it _______ for people _______ a happy life by improving the environment.
A．easy; live B．easier; to live C．easier; living D．easily; to live
【答案】B
【详解】句意：他通过改善环境使人们过上幸福的生活变得更容易。
考查形容词和非谓语动词。分析“He made it...for people...a happy life by improving the environment.”可知，it作形式宾语，形容词作宾语补足语，to do不定式作真正的宾语。live是动词，意为“居住”。这里语境中由比较之意，表示对于人们来说“更容易”，easy是形容词，意为“容易的”，easier是其比较级。故选B。
34．（24-25九年级上·湖南·期末）—The story of Chang’e is touching!
—Yes, and it’s necessary for us students ________ traditional Chinese stories.
A．learning B．learn C．to learn
【答案】C
【详解】句意：——嫦娥的故事很感人！——是的，对我们学生来说，学习中国传统故事是很有必要的。
考查非谓语动词。it’s necessary for sb to do sth表示“对某人来说做某事是有必要的”，不定式作主语。故选C。
35．（23-24九年级下·全国·课前预习）It is important ________ paper to save the trees.
A．recycle B．to recycle C．recycled D．recycling
【答案】B
【详解】句意：回收纸张以保护树木很重要。
考查非谓语动词。此处是结构it is adj. to do sth.“做某事是……的”，it作形式主语，真正的主语是动词不定式。故选B。
36．（22-23九年级下·全国·单元测试）It’s necessary ________ everyone ________ the environment.
A．for; protect B．of; to protect
C．for; protecting D．for; to protect
【答案】D
【详解】句意：保护环境对每个人来说很有必要。
考查固定句型。It’s necessary for sb. to do sth.表示“做某事对某人来说很有必要”，所以第一个空填for；第二个空填protect的不定式to protect。故选D。
37．（22-23九年级上·全国·课后作业）It’s our duty ________ our hometown clean and beautiful. We must do something for it．
A．keeping B．keeps C．to keep
【答案】C
【详解】句意：保持我们的家乡干净美丽是我们的责任。我们必须为它做点什么。
考查It固定句型。“It’s one’s duty to do sth.”意为“做某事是某人的职责”，其中it是形式主语，后面的动词不定式短语是真正的主语。故选C。
38．（24-25九年级上·吉林长春·期末）They found it easy ________ with each other.
A．communicate B．to communicate C．communicating D．in communicating
【答案】B
【详解】句意：他们发现互相交流很容易。
考查非谓语动词。communicate动词原形，交流；to communicate动词不定式；communicating现在分词或动名词形式；in communicating介词短语。根据“They found it easy … with each other.”可知，it是形式宾语，真正的宾语是后面的动词不定式短语，find it+形容词+to do sth.表示“发现做某事很……”。故选B。
39．（2025·甘肃定西·一模）It is very kind ________ you ________ me.
A．of; to help B．of; helping C．for; to help D．for; helping
【答案】A
【详解】句意：你帮助我真是太好了。
考查介词和非谓语动词。固定句式：it is+形容词+of sb to do sth“某人做某事是……”，这里的形容词是修饰人的品格，it is+形容词+for sb to do sth“对于某人来说做某事是……”。句中kind是修饰人的品格的形容词，所以第一个空用of，第二个空用动词不定式，故选A。
40．（24-25九年级下·吉林长春·开学考试）I’m too tired ________ farther, so let’s take a break.
A．walking B．to walk C．walk D．to walking
【答案】B
【详解】句意：我太累了，走不动了，所以我们休息一下吧。
考查固定搭配。too...to...表示“太……而不能……”，此处用to walk，故选B。
41．（2024·江苏南通·中考真题）________ more about rare wild animals, I spent some time searching online last night.
A．To learn B．Learning C．Learned D．Learn
【答案】A
【详解】句意：为了了解更多关于珍稀野生动物的信息，我昨晚花了一些时间在网上搜索。
考查非谓语动词。分析句子可知，“昨晚花了一些时间在网上搜索信息”的目的是“了解更多关于珍稀野生动物的信息”，作目的状语用动词不定式。故选A。
42．（2024·黑龙江牡丹江·中考真题）________ our students responsible and independent, military training (军训) has become tradition in China.
A．Making B．To make C．Make
【答案】B
【详解】句意：为了培养学生的责任感和独立性，军训已成为中国的传统。
考查非谓语动词。根据题干可知，军训是为了培养学生的责任感和独立性，应用动词不定式表目的，故选B。
43．（2024·天津·中考真题）People may use different body language _________ the same feelings.
A．show B．to show C．showed D．shows
【答案】B
【详解】句意：人们可能会用不同的肢体语言来表达同样的感受。
考查非谓语动词。use sth to do sth“用某物做某事”，使用动词不定式，故选B。
44．（2024·江苏扬州·中考真题）China has made great efforts ________ other countries build high-speed railways.
A．help B．to help C．helping D．helped
【答案】B
【详解】句意：中国为帮助其他国家建设高速铁路做出了巨大努力。
考查非谓语动词。make great efforts to do sth.“努力做某事”，应用动词不定式。故选B。
45．（2025·海南省直辖县级单位·一模）People may use different body language ________ the same feelings.
A．show B．shows C．to show
【答案】C
【详解】句意：人们可能会用不同的肢体语言来表达相同的情感。
考查非谓语。根据题干分析可知，人们用不同的肢体语言是为了表达相同的情感，应用动词不定式表示目的。故选C。
46．（2024·甘肃武威·二模）I prefer to have ______ one of the two skirts ______ some money for a dictionary.
A．the cheapest, to save B．a cheaper, to saving
C．a cheaper, to save D．the cheaper, to save
【答案】D
【详解】句意：我宁愿买两条裙子中较便宜的那条，省下钱买字典。
考查比较级和to do不定式。the cheapest最便宜的；a cheaper更便宜的，表泛指；the cheaper更便宜的，表特指；to saving是介词to+动名词；to save动词不定式。第一个空，比较两件裙子中的“更便宜的一条”，需用定冠词the+比较级，即the cheaper（两者中较便宜的）。第二个空，考查动词不定式表目的，即“为了省下钱买字典”，用to save。故选D。
47．（24-25九年级下·江苏泰州·阶段练习）It used to be quite pleasant ______ children to swim in this river, but now even fish are impossible ______ in it as it’s been heavily polluted.
A．of, to see B．for, to see C．of, to be seen D．for, to be seen
【答案】B
【详解】句意：过去，孩子们在这条河里游泳是相当愉快的，但现在由于河水被严重污染，甚至连鱼都看不到了。
考查特殊句型。of……的；for对于。根据句子结构，第一个空格所在句子，it是作形式主语，动词不定式是作真正的主语，所以是对于孩子们来说，在河里游泳是相当的快乐，第一个空格填for。to see主动形式；to be seen被动形式，句式sth. be impossible to do sth.做某事是不可能的，动词不定式主动表被动，所以第二个空格填to see。故选B。
48．（24-25九年级下·上海·阶段练习）The rich income enables our family ________ a happy life.
A．to live B．living C．live D．lived
【答案】A
【详解】句意：丰厚的收入使我们一家过上了幸福的生活。
考查非谓语动词。enable sb to do sth“使某人能够做某事”，故选A。
49．（24-25九年级下·福建福州·开学考试）A two-day global summit is underway (在进行中) in Paris ________ the future of artificial intelligence.
A．discuss B．to discuss C．discussing
【答案】B
【详解】句意：一场为期两天的全球峰会正在巴黎举行，目的是讨论人工智能的未来。
考查非谓语动词。根据“the future of artificial intelligence”可知，此处表示峰会举行的目的是讨论人工智能的未来，用动词不定式表目的。故选B。
50．（24-25九年级下·黑龙江哈尔滨·开学考试）My younger brother failed ________ the exam even though he studied very hard.
A．passed B．pass C．to pass
【答案】C
【详解】句意：尽管我的弟弟非常努力地学习，但还是没能通过考试。
考查非谓语动词。动词“fail”后通常接动词不定式“to do”，表示“未能做某事”。故选C。
51．（24-25九年级下·黑龙江哈尔滨·开学考试）—Mr. Wang, I have trouble ________ the new text.
—Remember ________ it three times before you begin to understand it.
A．to understand; to read B．understanding; reading C．understanding; to read
【答案】C
【详解】句意：——王老师，我在理解这篇新课文上有困难。——在你开始理解它之前，记得读三遍。
考查非谓语动词。have trouble (in) doing sth“做某事有困难”，第一个空填understand的ing形式understanding；remember to do sth“记得去做某事”，第二个空填read的不定式to read。故选C。
52．（24-25九年级·山东菏泽·自主招生）—Do you like ________ a teacher
—Sure. But my parents ________ me to be a doctor when I was a young girl.
A．to be; hoped B．being; hoped C．being; wished D．to be; wish
【答案】D
【详解】句意：——你喜欢成为一名教师吗？——当然。但当我还是个小女孩时，我的父母希望我成为一名医生。
考查非谓语动词和动词辨析。根据题意可知，第一空是表示“想要成为一名老师”的意思，所以，应用like to be a teacher，用不定式形式；第二空是表示“希望”的意思，又因为hope后面不接sb，所以，用wish sb. to do sth。故选D。
53．（24-25九年级下·四川泸州·开学考试）I can’t send an e-mail. Would you please show me ________
A．what to do B．where to go
C．when to do D．how to do it
【答案】D
【详解】句意：我不会发电子邮件。你能教我怎么发吗？
考查疑问词+不定式。what to do做什么；where to go去哪里；when to do什么时候做；how to do it如何做。根据“I can’t send an e-mail.”可知，此处是请求对方教自己如何发邮件。故选D。
54．（24-25九年级上·福建泉州·期末）Julia promised ______ me an e-mail after she went to England, but she didn’t do that.
A．send B．to send C．sending
【答案】B
【详解】句意：朱莉娅答应去英国后给我发电子邮件，但她没有这样做。
考查非谓语动词。promise to do sth.“承诺做某事”，为固定短语。故选B。
55．（24-25九年级上·陕西西安·期末）The movie makes me ______ sad because workers are made ______ for 20 hours a day.
A．feel; to work B．feel; work C．to feel; to work D．to feel; work
【答案】A
【详解】句意：这部电影让我感到难过，因为工人们被迫每天工作20小时。
考查非谓语动词。feel感到；work工作。make sb do sth表示“使某人做某事”，其中省略不定式“to”；be made to do sth表示“被迫做某事”，其中需用带“to”的不定式。故选A。
56．（2025·上海杨浦·一模）The police reminded the public ________ out for pickpockets in crowded areas.
A．look B．looked C．to look D．looking
【答案】C
【详解】句意：警察提醒公众在拥挤地区要留意扒手。
考查非谓语动词。根据“The police reminded the public...”可知，remind sb. to do sth.“提醒某人做某事”，这里to look out for...作宾语the public的补足语。故选C。
57．（24-25八年级上·吉林长春·期末）Kate, I’m ________ tired ________ walk anymore. Let’s have a rest.
A．so; that B．such; that C．enough; to D．too; to
【答案】D
【详解】句意：凯特，我太累了，不能再走了。咱们休息一下吧。
考查too...to do结构。so...that...如此……以至于……，so修饰形容词或副词，用于引导结果状语从句；such...that...如此……以至于……，such修饰名词，用于引导结果状语从句；enough...to...足够……以至于能够……，enough修饰形容词放在形容词后面；too...to...太……而不能……。根据“Let’s have a rest.”可知，是太累了要休息一下，tired 为形容词，因此用结构“too+adj./adv.+to do sth.”，表达太累不能走了。故选D。
58．（24-25九年级上·吉林长春·期末）Tom is too heavy. He plays sports every day ________ weight.
A．Loses B．lose C．to lose D．lost
【答案】C
【详解】句意：汤姆超重了。他每天做运动来减肥。
考查非谓语动词。根据“He plays sports every day…weight.”可知，空处不缺谓语动词，因此此处用动词不定式作目的状语。故选C。
59．（24-25七年级上·四川乐山·开学考试）Let’s ________ there, please.
A．to go to B．go C．going D．went
【答案】B
【详解】句意：咱们去那边吧。
考查非谓语动词。let sb. do sth.“让某人做某事”，固定搭配。故选B。
60．（23-24九年级上·江西南昌·期末）When people want to relax themselves, they prefer ________ TV or listen to music rather than ________ out.
A．watching; hanging B．watching; to hang C．to watch; hang D．to watch; hanging
【答案】C
【详解】句意：当人们想放松自己时，他们更喜欢看电视或听音乐，而不是出去闲逛。
考查非谓语动词。watching看，为watch的现在分词；to watch看，不定式；hang闲逛；hanging闲逛，现在分词。根据“…they prefer…TV or listen to music rather than…out.”可知，prefer to do sth. rather than do sth.“宁愿做某事而不愿做某事”，动词短语。故选C。
61．（23-24九年级上·四川泸州·期末）He failed ________ up to the top of the mountain because he was too tired.
A．Climbed B．climb C．to climb D．climbing
【答案】C
【详解】句意：他没有爬上山顶，因为他太累了。
考查动词不定式。根据空后“up to the top of the mountain”可知，他没有爬上去，应用“未能做某事”即“fail to do sth.”句式，结合选项，该空应填“to climb”。故选C。
62．（24-25七年级上·全国·课后作业）There are many eggs in the fridge. We _________ buy any more.
A．don’t need B．needn’t to C．don’t need to D．need to
【答案】C
【详解】句意：冰箱里有很多鸡蛋。我们不需要再买了。
考查need的用法。根据“There are many eggs in the fridge”可知有很多鸡蛋，所以不需要再买了，此处need作实义动词，使用结构need to do sth.“需要做某事”，变否定句时借助助动词don’t，后加动词原形。故选C。
63．（24-25八年级上·江苏扬州·期中）Amy had a birthday party last Saturday and she invited us ________ it.
A．to join B．join C．to join in D．to take part
【答案】C
【详解】句意：艾米上周六举办了一个生日派对，并邀请我们参加。
考查非谓语动词及动词短语。join指加入某个团体或组织；join in指参加某个小型活动；take part in指参加活动并在其中发挥一定的作用。根据“Amy had a birthday party”可知，此处是指邀请我们参加生日派对，用join in；根据“invited”可知，invite sb to do sth“邀请某人做某事”，空处用不定式作宾语补足语。故选C。
64．（24-25九年级上·江苏南通·期中）They tried their best ________ the ship ________ down. But failed.
A．to prevent, going B．prevented, from going
C．prevent, going D．to prevent, from going
【答案】D
【详解】句意：他们尽最大的努力阻止船下沉，但失败了。
考查固定结构。try one’s best to do sth意为“尽某人最大的努力做某事”，所以第一空用to prevent；prevent sb/sth from doing sth意为“阻止某人/某物做某事”，所以第二空用from going。故选D。
65．（2024·江苏南京·三模）The ORBIS doctors did everything ________ the girl with eye problems.
A．save B．saved C．to save D．saving
【答案】C
【详解】句意：为了拯救这名眼部有疾病的女孩子，ORBIS的医生们做了一切。
考查非谓语动词。根据“did everything”可知，医生们做了一切的目的是救这名女孩子，不定式表示目的。故选C。
66．（23-24九年级上·江苏无锡·期中）—What’s wrong with you You looked worried.
—I have many problems to solve. But I don’t know ________ first.
A．where to deal with B．when to deal with
C．how to deal with D．which to deal with
【答案】D
【详解】句意：——你怎么了？你看起来很担心。——我有许多问题要解决。但我不知道该先处理哪个。
考查宾语从句用法。根据“But I don’t know...”可知，空处缺宾语，结合选项可知，需用特殊疑问词+to do结构，how怎样，多用来做方式状语；when什么时候。多用来做时间状语；where哪里，选项A、B、C均缺少宾语，需排除。which哪一个，可做从句的主语。故选D。
67．（24-25九年级上·浙江宁波·开学考试）It is important for everyone ________ water and electricity in his life.
A．save B．saving C．to save D．saved
【答案】C
【详解】句意：对每个人来说，在生活中节约用水用电都很重要。
考查非谓语动词。根据固定句型：It is+adj.+for sb.+to do sth.“做某事对于某人来说是……的”，因此需使用动词的不定式，作真正的主语。故选C。
68．（2024·海南·中考真题）In China, family members get together ________ the Mid-Autumn Festival.
A．to celebrate B．celebrate C．celebrated
【答案】A
【详解】句意：在中国，家人聚在一起庆祝中秋节。
考查非谓语动词。根据语境可知，此处表示聚在一起的目的是庆祝中秋节，用不定式形式。故选A。
69．（23-24九年级上·江苏无锡·期中）—Have you decided how to go to Nanjing
—Not yet. I suggest ________ there while my parents advise me ________ a train there.
A．driving; taking B．to drive; to take C．driving; to take D．to drive; taking
【答案】C
【详解】句意：——你决定怎么去南京了吗？——还没有。我建议开车去那里而我父母则建议我坐火车去那里。
考查动名词和动词不定式。suggest doing sth“建议做某事”，第一空后面用动名词形式；advise sb to do sth“建议某人做某事”，第二空使用不定式。故选C。
70．（23-24九年级下·黑龙江佳木斯·开学考试）He decided ________ school late again.
A．to come B．don’t come C．not to come to
【答案】C
【详解】句意：他决定不再上学迟到。
考查不定式的否定式。根据“He decided ... school late again.”可知，句中已有谓语动词decided，因此空处用非谓语形式，排除B选项；此处是指决定不上学迟到，用decide not to do sth“决定不做某事”；come to school“上学”，固定搭配。故选C。
用所给词的正确形式填空
71．（24-25九年级下·湖北武汉·阶段练习）The Internet makes it easier for us (find) information.
【答案】to find
【详解】句意：互联网使我们更容易找到信息。make it+adj.+for sb. to do sth.“让某人做某事变得……”，此处用不定式，作真正的宾语，应填to find。故填to find。
72．（24-25九年级下·重庆·阶段练习）We are supposed to know what (wear) in different situations.
【答案】to wear
【详解】句意：我们应该知道在不同的情况下穿什么。“what”是疑问词，“疑问词+动词不定式”结构可以在句中作宾语成分，故填to wear。
73．（2025·吉林·模拟预测）My mother told me (not play) computer games too much.
【答案】not to play
【详解】句意：我妈妈告诉我不要玩太多电脑游戏。tell sb. not to do sth.是固定搭配，意为“告诉某人不要做某事”。故填not to play。
74．（24-25九年级下·山东济南·阶段练习）After years of hard work and saving, they can finally afford (buy) a house in the city.
【答案】to buy
【详解】句意：经过多年的努力和储蓄，他们终于可以在城里买得起房子了。afford to do sth“承担得起做某事”，故填to buy。
75．（24-25九年级下·甘肃武威·开学考试）Jim is learning how (behave) at the dinner table in China.
【答案】to behave
【详解】句意：Jim正在学习如何在中国在餐桌上举止得体。behave“举止得体”，是动词，此处为特殊疑问词+动词不定式，how to do sth.“如何去做某事”，故填to behave。
76．（24-25九年级下·重庆·开学考试）My parents prefer (encourage) me whenever I am down.
【答案】to encourage
【详解】句意：无论何时我情绪低落的时候，我的父母都更倾向于鼓励我。prefer to do sth.“更喜欢做某事；宁愿做某事”，固定搭配，所以这里应用动词不定式to encourage。故填to encourage。
77．（2024·江苏无锡·中考真题）The children did a lot of research in the lab (finish) the science project.
【答案】to finish
【详解】句意：为了完成这个科学项目，孩子们在实验室里做了很多研究。finish“完成”，动词。此处指孩子们做很多研究的目的是为了完成科学项目，应用动词不定式表目的。故填to finish。
78．（23-24八年级下·全国·课后作业）People should do more things (protect) these monkeys. They are in danger.
【答案】to protect
【详解】句意：人们应该做更多的事情来保护这些猴子。它们处于危险之中。protect“保护”。根据“People should do more things...these monkeys”可知，人们应该做更多的事情来保护这些猴子，此处应用动词不定式作目的状语。故填to protect。
79．（24-25九年级上·江苏无锡·期末）Our teacher reminds us (make) a study plan to manage our time better.
【答案】to make
【详解】句意：我们的老师提醒我们制定一个学习计划，以便更好地管理我们的时间。remind sb to do sth“提醒某人做某事”，因此空格中应填不定式“to make”。故填to make。
80．（2025九年级·湖南·专题练习）Jerry really hopes (improve) his English, so he keeps practising it every day.
【答案】to improve
【详解】句意：杰瑞真的希望提高他的英语，所以他每天都在坚持练习。hope to do sth“希望做某事”，故填to improve。
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