不定式做主语
不定式的六种用法
不定式的六种用法1、不定式作主语例如：To remember this is very important.注意：为了避免头重脚轻，在许多情况下，通常都将作主语的不定式置于句子后部，而在句首主语位置使用形式主语it。
例如：It is very important to remember this.2、不定式作表语例如：He seems to be ill.注意：不定式作表语主要有三种情况，一是用于seem, appear, prove 等系动词之后的不定式（尤其是to be），二是像My job is to sweep the floor. 这样的主语与表语“等价”的情形，三是表示想法、约定、义务、命令、可能性、命运等，如：You are to come when I call.3、不定式作宾语例如：I can not afford to buy a car.注意：①不定式不仅用作动词的宾语，还可用作个别介词（but, except）的宾语。
例如：I had no choice but to wait.②当作宾语的不定式后跟有宾语补足语时，通常要用形式宾语it代替不定式，并将真正的宾语不定式置于宾语补足语之后例如：I find it difficult to learn Japanese well.4、不定式作宾语补足语例如：Who taught you to drive?5、不定式作定语例如：I have a question to ask you.注意：有的名词（如way, chance, right等）后用作不定式可换成of doing sth.如：It is the best way to do (of doing) it.但是以下名词后接不定式作定语时通常不能换成of doing sth. attempt courage decision effort fortune failure invitation wish6、不定式作状语例如：I went to France to learn French.。
动词不定式作主语
动词不定式作主语用法一：表示一般的行为、状态或观点动词不定式作主语时，常常用来表示一般的行为、状态或观点。
例如：- To learn a new language requires patience and dedication.（研究一门新语言需要耐心和投入。
）- To travel is to broaden our horizons.（旅行即是拓展我们的视野。
）用法二：表示喜好、兴趣或计划动词不定式也可以用来表示喜好、兴趣或计划。
例如：- His plan is to study abroad next year.（他的计划是明年出国留学。
）- Her goal is to write a bestselling novel.（她的目标是写一本畅销小说。
）用法三：表示义务、建议或目的动词不定式还可以表示义务、建议或目的。
例如：- It is our duty to protect the environment.（保护环境是我们的责任。
）- I would like to suggest to have a meeting tomorrow.（我建议明天开个会。
）- The purpose of this project is to improve efficiency.（这个项目的目的是提高效率。
）需要注意的是，动词不定式作主语时，一般放在句子开头或主语之后，常与“主语+be动词”构成完整的句子结构。
总结起来，动词不定式作主语可以用来表示一般的行为、状态或观点，表达喜好、兴趣或计划，以及表示义务、建议或目的。
通过灵活运用动词不定式作主语，可以使句子更加丰富和引人注目。
本文以上为简要介绍动词不定式作主语的用法和例句。
不定式作主语
1.不定式作主语，如To answer that question is difficult.此时常可将其转换为以it作形式主语的句子，即It is difficult to answer that question.故有固定结构It is + adj若形容词为描述某人的品质的(如good, wise, clever, silly, wrong等)，一般采用of，其他则使用for。
2.不定式作宾语:①有些动词能直接带不定式，而不能直接带动名词，这类动词有agree, aim, apply,arrange, choose, claim, decide, demand, desire, determine,, expect, hope, learn, manage, offer, prepare, pretend, promise, refuse, seek, swear, threaten, undertake, venture, volunteer,等②动词不定式也可作介词宾语，动词不定式也可与wh-疑问词连用，如He gave me some advice on how to learn English.介词except, but后，如果之前有动词do及其变形(do的某种形式)，则其后跟不带to不定式，否则不定式带to，如They did nothing except work. ⇔ There’s no choice but to wait.形象描述为“有毒(do及其变形)无兔(to)，有兔(to)无毒(do及其变形)”(有毒则无兔子)3.不定式作宾语补足语:①有一些动词必须先带宾语再带不定式(且必须为带to不定式)，而不能直接带不定式，这类动词包括[1]arrange for, ask for, rely on, call on, wait for等词组动词；[2]consider, declare, find, prove, think, believe, discover, feel, judge, suppose, understand, want, wish, expect等表示心理状态的动词；[3]advise, allow, forbid, permit, recommend, require, urge, ask, tell, order, beg, help, persuade, prepare, cause, force, invite, oblige, enable, get, encourage, remind, request, command, warn, drive等表示劝告、允许、禁止等动词；使役动词、感官动词一般后跟不带to不定式，注意改为被动语态时需恢复to②第[2]类动词中，其后的不定式总带to，通常为to be，往往可以省略，如We considered him (to be) foolish.③第[3]类动词中advise, allow, forbid, permit, recommend等动词也可直接跟动名词作宾语，如She advised giving up smoking. ⇒ She advised us to give up smoking.④let, make, have等使役动词+宾语，之后用不带to不定式，当使役动词为被动态时，则需将不带to不定式转为带to不定式see, hear, observe, notice, feel, watch, look at, listen to等感官动词+宾语，之后用不带to不定式，当上述动词为被动态时，则需将不带to不定式转为带to不定式help或help +宾语后既可用带to不定式，也可以不带to不定式。
动词不定式作为主语宾语和表语的句型
动词不定式作为主语宾语和表语的句型动词不定式作为主语、宾语和表语的句型动词不定式在句子中可以充当主语、宾语和表语，起到了连接句子成分的作用。
本文将分别从这三个方面来讨论动词不定式的用法。
一、动词不定式作为主语1. 动词不定式作为主语常放在句首，它的主要功能是表达动作、状态或目的。
例句1：To love and to be loved is the greatest happiness in life.翻译：爱与被爱是人生最大的幸福。
例句2：To learn a foreign language requires patience and perseverance.翻译：学习一门外语需要耐心和毅力。
二、动词不定式作为宾语1. 有些动词后面需要接动词不定式作为宾语，表示动作的意愿、决心、许可、能力等。
例句1：He wants to visit his grandparents this weekend.翻译：他想要在这个周末拜访他的祖父母。
例句2：They can't afford to buy a new car.翻译：他们买不起一辆新车。
2. 有些动词后面只能接动词不定式作为宾语，不能接动名词。
例句1：She decided to study abroad after graduation.翻译：她决定毕业后去国外留学。
例句2：I promised to help him with his homework.翻译：我答应帮他做作业。
三、动词不定式作为表语1. 动词不定式作为表语和系动词连用，表达主语的状态、特点或能力等。
例句1：Her dream is to become a famous singer.翻译：她的梦想是成为一名著名的歌手。
例句2：My goal is to learn Spanish fluently.翻译：我的目标是流利地学习西班牙语。
2. 有些系动词后面只能接动词不定式作为表语，不能接形容词。
不定式做主语用法
不定式做主语用法不定式作为主语是一种常见的语法结构，它在句子中可以充当主语的角色。
不定式主语通常由“to + 动词原形”构成。
在使用不定式作为主语时，需要注意以下几点：1. **基本结构：** 不定式主语通常由““to + 动词原形”构成，例如：To learn is important.（学习很重要。
）2. **形式主语：** 有时，为了避免重复或强调，不定式主语也可以放在句子末尾，而将“it”作为形式主语放在句首，例如：It is important to learn.（学习很重要。
）3. **动词后置：** 在某些情况下，不定式主语也可以紧跟在动词后面，例如：We want to dance.（我们想跳舞。
）下面是一些例句，演示了不定式作为主语的用法：1. **To study** English is essential for your future career.（学习英语对你未来的职业生涯至关重要。
）2. **To travel** around the world is my dream.（环游世界是我的梦想。
）3. **It is important** **to be** honest in all situations.“（在所有情况下诚实是很重要的。
）4. **To help others** is a noble act.（帮助他人是一种高尚的行为。
）5. **To quit smoking** requires determination and willpower.“（戒烟需要决心和毅力。
）6. **It's fun** **to play** board games with friends.（和朋友们一起玩桌游很有趣。
）7. **To find** a solution to the problem is our top priority.（找到问题的解决方案是我们的首要任务。
不定式作主语的句型初中语法技巧
不定式作主语的句型初中语法技巧不定式是一种常见的语法结构，它可以作为主语出现在句子中。
掌握不定式作主语的句型是初中语法学习的关键之一。
本文将介绍不定式作主语的句型以及相关的语法技巧。
一、不定式作主语的句型结构1. It + be + 形容词 + 不定式作主语：- It is important to learn a foreign language.- It is easy to solve this math problem.2. 动词不定式短语作主语：- To visit the Great Wall is my dream.- To study abroad is her goal.3. 不定式短语作主语：- To win the competition requires hard work.- To make a cake needs flour, eggs, and butter.二、语法技巧1. 不定式作主语时，谓语动词通常使用单数形式：- To learn English is important.（不用learns）2. 强调句型：- It is John who wants to go shopping.（不用John wants）- It is important to finish the homework on time.（不用To finish）3. 利用不定式作主语可以避免句子主谓倒装的情况：- To err is human.（不用Is human to err.）4. 动词不定式的时态需根据语境和需要来决定：- To have breakfast at a cafe is my daily routine.（一般现在时）- To have finished the task by tomorrow is my goal.（完成时）5. 可以使用动词不定式的被动形式作主语：- To be loved by others is a wonderful feeling.（被动形式）6. 不定式作主语常常需要加宾语补足语来完善句意：- To learn a foreign language well takes time and effort.- To become a doctor requires years of study.三、实例分析1. It + be + 形容词 + 不定式作主语：- It is necessary to wear a helmet when riding a bike.（骑车时必须戴头盔）- It is fun to play video games with friends.（与朋友一起玩游戏很有趣）2. 动词不定式短语作主语：- To eat a healthy diet is important for everyone.（对每个人来说，吃健康饮食很重要）- To learn from mistakes is the key to success.（从错误中吸取教训是成功的关键）3. 不定式短语作主语：- To win the game requires teamwork and strategy.（赢得比赛需要团队合作和策略）- To be polite to others is a sign of good manners.（对他人礼貌是良好举止的象征）四、总结本文介绍了不定式作主语的句型结构和相关的语法技巧。
不定式作主语句子
不定式作主语句子
1. To travel the world is my lifelong dream. (环游世界是我一生的梦想。
)
2. To learn a new language can be challenging, but also rewarding. (学习一门新语言可能具有挑战性，但也同样具有回报。
)
3. To be kind to others is a simple way to spread happiness. (对他人友善是传播幸福的一种简单方式。
)
4. To succeed, you must be willing to work hard and never give up. (要想成功，你必须愿意努力工作，永不放弃。
)
5. To understand another culture is to open yourself to new perspectives and experiences. (理解另一种文化就是打开自己接受新视角和体验的大门。
)
在这些句子中，不定式短语作为主语，表达了某种行为、愿望、需求或建议，引领了整个句子的主要陈述或观点。
不定式通常用来表示具体的、一次性的动作，或者是为了强调动作的目的或意图。
不定式作主语和宾语的常见用法
不定式作主语和宾语的常见用法不定式是英语中一种非谓语动词形式，由to加动词原形构成。
在句子中，不定式可以作为主语或者宾语，起到了重要的语法和语义作用。
本文将介绍不定式作主语和宾语的常见用法。
一、不定式作主语的用法1. 表示一般性的动作或事实：To learn a foreign language is important for personal development.学习一门外语对个人发展很重要。
2. 表示一种愿望、意图或目标：To travel around the world is my dream.环游世界是我的梦想。
3. 表示一种能力、技能或习惯：To swim is a basic skill that everyone should learn.游泳是每个人都应该学会的基本技能。
4. 表示时间、地点或方式的具体事项：To arrive on time is essential for the success of the meeting.准时到达对于会议的成功至关重要。
二、不定式作宾语的用法1. 动词后接不定式作宾语：I hope to see you soon.我希望很快见到你。
2. 常见的动词和短语后接不定式作宾语：- decide 决定I have decided to buy a new car.我已经决定买一辆新车。
- want 想要She wants to become a doctor in the future.她想要将来成为一名医生。
- plan 计划We are planning to go hiking this weekend.我们打算这个周末去徒步旅行。
- learn 学习He needs to learn how to play the guitar.他需要学习如何弹吉他。
- hope 希望I hope to visit Paris one day.我希望有一天能够参观巴黎。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
I．不定式做目的状语不定式属于非谓语动词的一种，它除了不能作谓语外，在句中可以充当其它任何句子成分。
不定式作状语时，用来修饰动词、形容词、副词或整个句子，通常表示目的、结果、原因、程度等。
本模块主要学习不定式作目的状语的用法。
1.不定式和不定式短语作目的状语时，主要用来表示某一动作或状态的目的。
表示强调意义时，为了使目的意义更加清楚，还可以用短语in order to 或so as to表达，so as to还可以拆开写成so…as to, 但in order to不能拆开。
He ran fast so as to catch the first bus. = He ran so fast as to catch the first bus. 其否定形式分别为in order not to; so as not to如：I’ve written it down ________________________________________________(怕忘记). 2. 不定式或不定式短语表示的是主语的目的，因此，其逻辑主语通常是句子的主语。
判断正误：要正确画出地图，你需要一枝特殊的笔。
1) To draw maps properly, you need a special pen. （）2) To draw maps properly, a special pen is needed. （）3.由in order to 引导的目的状语，既可以置于句中，也可以置于句首，而由so as to 引导目的状语，能置于句中，而不能置于句首。
判断正误：他们出发得很早目的是及时赶到那里。
1) They started early in order to get there in time. （）2) In order to get there in time, they started early. （）3) They started early so as to get there in time. （）4) So as to get there in time, they started early. （）4. 不定式的复合结构作目的状语当句子的主语不是不定式或不定式短语的动作的执行者时，要用不定式的复合结构（即在不定式或不定式短语之前加for + 名词或宾格代词）作状语。
如：为了让这些孩子们进来，他打开了门。
He opened the door ________________________________________________________.5. 不定式作目的状语与目的状语从句的转换1) 当目的状语从句中的主语与主句中的主语相同时，可以直接简化为不定式或不定式短语作状语。
我们出发得早一点为了能准时到达那里。
We’ll start early in order that we may arr ive in time.→We’ll start early ___________________________________________________ in time.2) 当目的状语从句中的主语与主句中的主语不相同时，可简化成不定式复合结构作状语。
We are now using studying plans so that the students can learn English easily.→We are now using studying plans __________ the students __________ learn English easily.II. 结果状语从句1.结果状语从句通常由so …that或such …that 引导。
such是形容词，修饰名词或名词词组so是副词, 修饰形容词或副词。
该句型有以下几种结构：①so + 形容词或副词+ that从句②so + many / few + 可数名词复数+ that从句③so + much / little + 不可数名词+ that从句④so + 形容词+ a +可数名词+ that从句例如：so beautiful a flower such a beautiful flowerso many/ few workers such intelligent workersso much/ little water such rapid progressHe is so good a teacher that we respect him. （句型转化）→_______________________________________________________.Tom had _______ _______ _______ (如此少的钱)that he had to get a job.They are _______ _______ _______ (如此有趣的书) that we want to read them.2．so that 既可以引导结果状语从句也可以引导目的状语从句，（引导目的状语从句，从句中常有情态动词can, could, may, might, should等）I got up early so that I could catch the first bus.【当堂达标】I. 单项选择1. ____, you need to give all you have and try your best.A. Being a winnerB. To be a winnerC. Be a winnerD. Having been a winner2. He gave me the phone number in order ____ contact him when we are in need of help.A. toB. of me toC. for me toD. that I3. —Did the book give the information you needed?—Yes. But ______ it, I had to read the entire book.A. to findB. findC. to findingD. finding4. She made a candle ______ us light.A. giveB. gaveC. to giveD. given5. Tom kept quiet about the accident ______ lose his job.A. so not as toB. so as not toC. so as to notD. not so as to6. They are ______ children that they can’t dress themselves.A. so littleB. such littleC. so smallD. too smallII. 用so或such填空：1. He is __________ a careless boy that he often mislays(乱放) his books and pens.2. This was __________ fine music that it was worth listening to twice.3. She was __________ careless that she made a lot of mistakes.4. They are __________ good children that we all love them.5. He has made ______great progress that all of us want to learn from him.III. 句型转换，每空一词：1. He ran very fast so as to catch up with Jack.①_________ _________ __________ catch up with Jack, he ran very fast.②He ran fast _________ _________ __________ he could catch up with Jack.2. She spoke loudly so that her students could hear her clearly.She spoke loudly __________ her students __________ hear her clearly.学案三答案1.in order not to forget it./so as not to forget it.2.1)√2)×3.1)√2)√3) √4) ×4.for children to come in.5.1)to arrive 2) for; toII. 1. He is such a good teacher that we respect him.so little money such interesting books【当堂达标】I.BCACBBII.such such so such suchIII. 1. in order to; in order that 2. for; to名词用作动词，即名词动用，是英语中一种活跃的构词方式。
1．比较并翻译划线词的意思：①A. Her face turned red when she was caught cheating in the exam. ________________________B. He knew the situation was difficult, but he was determined to face it.____________________②A. We hope to put an end to the Iraq War as soon as possible.__________________B. We started with soup, and ended up with fruit.______________________③A. What do you think of my performance in the job interview?_________________B. Housewives interviewed about the new product spoke highly of it.______________________④A. He who plays with fire gets burned.__________________B. The boss fired him for his carelessness.________________________。