八年级英语动词不定式复习
动词不定式复习语法复习：动词不定式动词不定式(to do)是初中英语课的一个重点，也是中考要考查的一个项目。
动词不定式属于非谓语动词的一种形式，很多同学经常把它和谓语动词混在一起，掌握起来有困难。
下面我们对动词不定式的用法做简单归纳，帮助同学们记忆：一、动词不定式在句子中不能充当谓语，没有人称和数的变化。
二、动词不定式是由“to+动词原形”构成(有时可以不带to)。
动词不定式的否定形式是“not+动词不定式”(not不与助动词连用)。
三、动词不定式短语具有名词、形容词和副词等的功能，可在句中用做多种句子成分。
1、主语：常置于句末，而用it代替其做形式主语。
To go in for sports helps you stay fit.It is dangerous to swim in the deep sea on your own.注：此句式中不定式逻辑上的主语可由for或of引出，逻辑主语由of引出时，表语的形容词为kind, nice, good, polite, clever, foolish, right, wrong等表示评价的形容词。
例：It’s right of him to refuse the invitation. (him为逻辑主语)2、表语：Our duty is to protect the environment.3、动词宾语：此种情况可按固定搭配或句式去记。
例：Would you like to see my photos?Kevin planned to visit his uncle.和plan用法一样的词还有：start, want, agree, hope, begin, decide等。
I found it very difficult to get a job. (it为形式宾语)4、宾语补足语：(1) 在多数复合宾语及物动词后要带to。
例：I asked a friend to read it to me. (book4，L2)(2) 在表示感觉、致使等意义的动词(see, watch, hear, feel, notice, observe, make, let, have, help等) 后不带to。
例：They heard him sing a pop song in the meeting room.5、定语：动词不定式做定语放在所修饰的名词的后面。
例：I have something important to say.6、形容词补足语:在表示心理、感情、评价等的形容词后，对其进行补充说明。
例：We are very glad to meet you again.7、状语：表示目的、原因、程度等。
例：They brought in photos of their families for me to look at.8、“疑问词+不定式”用法：不定式前可带what, who, which, where, when, how等疑问词，这种不定式短语在句中多用做宾语。
例：He didn’t tell me where to go.不定式综合练习：一．用动词的适当形式填空（包括时态和动词的非谓语形式）1、Joe Hill wrote songs_______(keep) up the workers' struggle.2、His brother told me he enjoyed_______(play) football very much.3、Stop ______(talk), you will hear something strange.4、Don't make him_______(climb) the tree.5、This year they are going __________(put) up a new theatre (戏院).6、These books can't___ __(return) to you, because I __ _(not finish)_______(read) them.7、Father asked his son_______(not play) with fire.8、The students were asked __________(take) out a piece of paper and write down thesentences on the blackboard.9、After having a rest , he went on ______(do) his homework.10、It's time for you __________(empty) the dustbin.11、A lot of information __________(put) into the computer yesterday .12、It's important ___________(do) morning exercises every day.13、To a doctor the most important thing is_________(save) lives.14、The boss made us_________(work) more than ten hours a day.15、The professor had a strange way of________(make) his lessons lively and interesting.16、(put)_______on your coat and be careful ___________(not catch) a cold.17、I am sorry _______(keep) you________(wait) so long.18、How ________(get) to the science museum is a question.19、It takes me half an hour__________(go) to school on foot.20、She was never heard ___________(sing) so well before.21、She often does__________(shop) in the evening.22、They stopped________(listen) to her songs because they were fond of _______(sing).23、It's rather cold ,you'd better_________(not take) off your coat.24、It's kind of you_________(give) seat to the old man.25、May I use your dictionary for a minute? I want________(look) up a new word.26、They were able___________(built) the house themselves.27、He was told ________(pay) attention to (注意) his pronunciation(发音).28、He had a lot of work___________(do).29、Would you please__________(give) the boy something ______(eat).30、Would you like him ___________(get) some water for you?31、I saw Mary ________(play) with her sister under the tree.32、You must________(tell) your brother ______(bring) his English book to school.33、----Mr Hu __________(be) in hospital since 2 days ago.----I'm sorry________(hear) that.34、The English teacher________(ask) us________(write) these new words again.35、There was no time_______(read) the newspaper at the time.36、Tom is too young_________(carry) the box.37、Stop ________(write) and________(listen) to the teacher.38、It's better_______(give) than_________(receive).39、Most of the students are busy______(do) their homework..40、Our teacher asked me_________(not play) basketball.二．把下列的定语从句和同位语从句改为不定式短语。
1. There are still a lot of difficulties we have to overcome.2. Before the machines leave the factory, there is a series of tests that must be passed.3. At the end of the speech he expressed the desire that he should come and work in Chinasomeday.4. They signed an agreement that they should expand the trade between the two countries.5. The commander gave orders that we should cross the river.三. 把下列的状语从句改为不定式短语。
1. She was excited when she heard the news.2. I’m glad I have seen your mother.3. The mother was pleased when she saw her son doing so well at school.4. He was very happy when he saw us so happy.5. They will be disappointed when they hear it.四. 把下列的结果状语从句改为 enough to 或too…to… 短语。
英语八年级下册unit1知识点
英语八年级下册unit1知识点英语学习是需要掌握一定的知识点才能更好地理解和运用语言。
本文将介绍英语八年级下册Unit1的重点内容，帮助学生更好地复习学习。
一、动词不定式动词不定式是动词的一种形式，通常由“to”和动词原形共同构成，用途广泛，并且常与其他词语搭配使用。
例如：We like to play basketball.（我们喜欢打篮球。
）He wants to go to the movie theater.（他想要去电影院。
）动词不定式具有动词的特点，可以表示动作或状态，也可以作为名词、形容词或副词的补充，需要灵活运用。
二、情态动词情态动词是一类特殊的助动词，表示说话者的态度、想法、推测、建议等。
英语八年级下册Unit1中常见的情态动词有“can、could、may、might、must、shall、should、will”等。
例如：I can speak English very well.（我能非常好地说英语。
）She should study more.（她应该再多学习一些。
）情态动词的用法比较复杂，需要结合具体语境进行理解，语法规则也有一定的复杂性，需要多加练习。
三、被动语态被动语态是表达主语受到动作影响的动词形式，通常由“be+过去分词”构成，用于强调动作的承受者，常与“by”连用。
例如：The book was written by him.（这本书是他写的。
）The flowers were watered by the girl.（这些花是那个女孩浇的水。
）被动语态在英语表达中应用广泛，需要掌握其构成、用法及注意事项，以便在交际中恰当地运用。
四、形容词与副词比较级和最高级形容词和副词的比较级和最高级形式用于比较不同事物之间的差异和程度等级。
其中，一般情况下，单音节形容词和副词的比较级和最高级结尾加“-er”和“-est”，双音节或多音节形容词和副词则在前面加“more”或“most”。
八年级英语动词不定式单选题40题
八年级英语动词不定式单选题40题1. It's important ______ English well.A. to learnB. learningC. learnD. learned答案：A。
本题考查动词不定式作主语的用法。
It 是形式主语，真正的主语是动词不定式“to learn English well”。
B 选项“learning”是动名词形式，通常不用于“It's + adj. +...”的句型中作主语；C 选项“learn”是动词原形，不能直接作主语；D 选项“learned”是过去式或过去分词，也不能作主语。
2. The best way ______ healthy is to exercise every day.A. keepB. to keepC. keepingD. keeps答案：B。
此题考查动词不定式作定语的用法。
“to keep healthy”作后置定语，修饰“way”，表示“保持健康的方式”。
A 选项“keep”是动词原形，不能作定语；C 选项“keeping”是动名词形式，一般不作定语；D 选项“keeps”是第三人称单数形式，也不能作定语。
3. I have a lot of homework ______.A. to doB. doC. doingD. done答案：A。
这里考查动词不定式作宾语的用法。
“to do”作“have”的宾语，表示“有很多作业要做”。
B 选项“do”是动词原形，不能直接作宾语；C 选项“doing”是动名词或现在分词形式，在此处不符合；D 选项“done”是过去分词形式，不符合题意。
4. They decided ______ a party this weekend.A. haveB. to haveC. havingD. had答案：B。
本题考查动词不定式作宾语的用法。
“decide to do sth.”是固定搭配，意思是“决定做某事”。
八年级英语动词不定式用法梳理
八年级英语动词不定式用法梳理八年级英语动词不定式用法梳理动词不定式就是由“不定式符号to+ 动词原形”组成得一种非谓语动词构造。
有些动词不定式不带 to，动词不定式能够作句子得主语、表语、宾语、定语、补语、状语或独自使用。
不定式保存动词得某些特征，能够有自己得宾语、状语等。
动词不定式与它后边得宾语、状语等一同组成短语，叫作不定式短语。
一、用作主语多半状况用 it 作形式主语，把真实得主语——动词不定式置于句末，特别就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。
疑问词 +不定式短语作主语可置于句首，复合不定式构造作主语常置于句末。
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 、 (目睹为实；百闻不如一见)二、用作表语动词不定式作表语，常说明主语得内容、性质、特点。
如：1、The best way is to join an English club 、2、 The first thing is to listen to the teacher carefully 、三、用作宾语八年级英语动词不定式用法梳理1、能够接带to 得动词不定式作宾语得动词主要有：要求选择赞同(ask,choose, agree) ，希望决定学习(expect,hope, decide, learn) ，宁愿假装知道(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 、、、，介词构造on、、、可用疑问词带 to 得不定式短语作宾语，但 why 后边得不定式不带 to 。
人教版英语八年级上册08动词不定式(基础讲解)
动词不定式【概念引入】1. 动词不定式名言：（1）动词不定式作表语To lose is to learn. 失败就是学习。
（2）动词不定式作主语It is better to give than to take. 给予比接受更好。
（3）不定式作宾语Expect to be treated as you have treated others.你怎样待别人，就指望别人怎样待你。
（4）不定式作宾补Adversity causes some men to break，others to break records.逆境使一些人崩溃，也使一些人破记录。
（5）不定式作定语There is a time to talk and a time to act.该说的时候说，该做的时候做。
（6）不定式作目的状语To find the exact answer，one must first ask the exact question.要找到确切的答案，首先必须提出确切的问题。
2. 动词不定式定义：动词不定式是一种非谓语形式（不能作谓语），基本形式是to do形式(to是不定式符号的标志，无意义，可以不翻译)肯定式：to + 动词原形否定式：not to + 动词原形【用法讲解】1.动词不定式的特征动词不定动式是一种非谓语动词形式，它没有人称和数的变化，在句子中不能作谓语，但可以作除谓语之外的其它任何句子成分（主语、表语、宾语、宾语补足语、定语和状语）；动词不定式具有名词、形容词和副词的特征，同时还保持动词的某些特点，既可以有自己的宾语和状语，动词不定式和它的宾语和状语构成不定式短语。
2. 动词不定式在句子中的作用动词不定式是由to+动词原形构成，在句中起名词，形容词和副词的作用，可以担任除谓语以外的其它任何成分。
（1）动词不定式作主语。
例如：To master a language is not an easy thing.掌握一门语言不是一件容易的事情。
冀教版初中英语八年级动词不定式(讲解+练习)(1)
动词不定式1. 动词不定式位置：（1）动词不定式作表语To lose is to learn. 失败就是学习。
Ψ表语表语是谓语的一部分，它位于系动词如be之后，说明主语身份，特征，属性或状态。
一般由名词，代词，形容词，副词，不定式，介词短语等充当。
I am a teacher.（2）动词不定式作主语It is better to give than to take. 给予比接受更好。
Ψ主语主语表示句子主要说明的人或事物，一般由名词，代词，数词，不定式等充当。
He likes watch TV.（3）不定式作宾语Expect to be treated as you have treated others.你怎样待别人，就指望别人怎样待你。
Ψ宾语宾语表示动作行为的对象，跟在及物动词之后。
能作宾语的有名词，代词，数词，动词不定式等。
We all like play basketball.√.I’ve worked with children before, so I know what ________ in my new job.A. expectedB. to expectC. to be expectingD. expects（4）不定式作宾补Adversity causes some men to break，others to break records.逆境使一些人崩溃，也使一些人破记录。
Ψ宾补就是宾语补足语，就是补充说明宾语的。
I know you are a student good at maths.(在这个句子中，good at maths 就是补语) I know you are a student who is good at maths.(宾语补语也可以是句子)I see you crossing the street.(还可以是-ing 形式)√. I saw him _______ out of the room.A. goB. had goneC. has goneD. goes（5）不定式作定语There is a time to talk and a time to act.该说的时候说，该做的时候做。
八年级英语动词不定式单选题30题
八年级英语动词不定式单选题30题1. To learn English well is very important for us.A. To learnB. LearnC. LearningD. Learns答案：A。
本题考查动词不定式作主语。
动词不定式“To learn English well”作主语，表示具体的动作或行为。
选项B“Learn”是动词原形，不能直接作主语。
选项C“Learning”是动名词形式，通常表示一般性、习惯性的动作，在此语境中不如动词不定式准确。
选项D“Learns”是第三人称单数形式，也不能作主语。
2. To play football in the street is dangerous.A. To playB. PlayC. PlayingD. Plays答案：A。
此题考查动词不定式作主语。
“To play football in the street”是动词不定式结构，作主语表示具体的动作。
选项B“Play”是动词原形，不能作主语。
选项C“Playing”是动名词形式，在本句中不如动词不定式贴切地表达“在街道上踢足球”这个具体的行为。
选项D“Plays”是第三人称单数形式，不能作主语。
3. To finish the work on time is difficult for him.A. To finishB. FinishC. FinishingD. Finishes答案：A。
本题考查动词不定式作主语。
“To finish the work on time”作主语，强调按时完成工作这个具体的动作。
选项B“Finish”是动词原形，不能作主语。
选项C“Finishing”是动名词形式，在此处不如动词不定式更能突出“按时完成工作”的特定动作。
选项D“Finishes”是第三人称单数形式，不可作主语。
4. To help others makes me happy.A. To helpB. HelpC. HelpingD. Helps答案：A。
初中英语动词不定式及动名词总结
初中英语动词不定式及动名词总结初中英语动词不定式及动名词总结（八年级）一、后跟动词不定式结构1.agree to do XXX同意做…2.decide to do XXX决定做…3.hope to do sth希望…4.need to do sth需要…5.offer to do sth主动…6.plan to do sth计划…7.can’t wait to do迫不及待…8.continue to do sth继续…9.try (one’s best) to do尽力…ed to do sth过去常常…11.feel lucky to do XXX做某事很幸运12.ask sb to do sth叫某人做13.want（sb）to do sth想要（某人）…XXX鼓励某人做…15.allow sb to do sth允许某人做…16.XXX提醒某人做…17.send sb to do sth派某人做…18.It’s +形+for sb +to do XXX做某事对或人来讲怎么样19.It XXX sb some time to do sth做某事破费或人多长工夫20.too+形+to do太…而不克不及…21.XXX do充足…能够做…22.不定式能够作表语My job\dream is to do23.不定式能够作定语a good way\place to do sth做某事的好方法24.不定式能够表目的To get good grades。
I must study hard2、后跟动名词方式1．consider doing sth考虑2.XXX喜爱3.XXX XXX做完某事4.mind doing sth介意5.keep doing sth一直keep on doing sth继续|坚持6.can’t。
doing sth停不下来7.can’t。
help doing sth不由得8.put off doing sth推迟9.give up XXX摒弃10.ba busy doing sth忙于11.have a good time doing XXX做某事很开心12.have XXX做某事很困那13.how \what about doing sth…怎么样14.XXX成功做15.XXX感谢做16.be XXX对做某事感乐趣be afraid of doing sth害怕be good at doing sth善于于XXX对做…自豪be used to doing sth惯于17.sb spend some time (in) doing sth18.XXX三．即可加to do又可加ing，但意思差别大XXX do XXX忘记要做某事（事情还未做）XXX遗忘做过某事（工作已做）XXX记得要做某事（事情还未做）XXX记得做过某事（事情已做）try to do XXX尽力去做某事XXX尝试做某事to do XXX停下了去做某事XXX停止做某事used to do XXX过去常常做某事be used to doing sth气于做某事四．后跟动词原型make sb do XXX使某人做某事let sb do XXX让某人做某事help sb (to) do sth帮助或人做某had better do XXX最好做某事五．便可跟原型，又可跟ingsee sb do XXX看见某人做了某事（事情已发生）XXX瞥见或人正在做某事（工作正在产生）hear sb do XXX听见或人…了（工作已产生）。
英语人教版八年级下册动词不定式归纳
三、在表感觉的动词（感官动词）等后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. • 4、I heard her play the piano. 5、I felt the floor move.
十、在why, why not后的不定式不带to
• (1)Why spend such a lot of money? • (2)Why not join us?
• (3)Why don't you smoke?
十一、在口语中，特别是在美国，祈使句中谓语动 词和构成谓语的不定式go后面的不定式往往省to
二、与情态动词连用构成复合谓语
• 1、I can speak English. • 2、May I come in? • 3、We must work，and above all we must believe in ourselves. 4、Could you do something for me? 5、He might be working in the office now. • 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
1、You may take a horse to the water ,but you can't make him drink. 2、I'll let him do it. • 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、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. •
人教版新八年级英语暑假讲义第09讲动词不定式作宾语-(学生版+解析)
第09讲动词不定式作宾语【基础知识】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。
【考点剖析】例1．（2022·山东·莒南县教育科学研究与发展中心八年级期末）—Did you practice ________ English this morning?—Yes, but I forgot ________ the classroom.A．to speak; to clean B．speaking; to clean C．speaking; cleaning例2．（2022·广东·深圳市高级中学八年级期中）—Did you forget ________ off the light when you left the room just now?—No, I remember ________ that, Mum.A．to turn；to do B．turning；doing C．to turn；doing例3．（2022·广东·深圳市高级中学八年级期中）—Does your mother make you ________ housework every day?—No. In fact, I offer ________ the dishes every day.A．do; to do B．to do; to do C．do; doing例4．（2021·辽宁沈阳·八年级期末）Three teenagers ________ to do some voluntary work during the school holiday.A．kept B．offered C．thought D．practised【真题演练】5．（2022·四川广元·中考真题）The Great Wall is so famous that a large number of travellers wish ______ it.A．visit B．visiting C．to visit D．visited 6．（2022·天津·中考真题）The painting is really valuable to him. He will never agree ________ it.A．sell B．sells C．sold D．to sell 7．（2021·山东济南·中考真题）—Have you finished your book report yet?—No, I haven’t. I plan ________ it this weekend.A．write B．wrote C．writing D．to write 8．（2021·云南昆明·中考真题）It is necessary to learn ________ time and make good use of every minute.A．to manage B．managing C．to lose D．losing 9．（2021·重庆·中考真题）The villagers plan ________ a new bridge over the river.A．build B．building C．to build D．built【过关检测】10． Please remember ________ tomorrow morning.A．to wake up me B．waking up me C．to wake me up D．waking me up 11． The couple managed ________ the ship.A．to go on the board B．going onto boardC．going on board D．to go on board12．I found ________ interesting ________ the animals.A．that; to feed B．it; to feed C．this; feed D．it; feed 13．Don’t forget _________ your book here tomorrow.A．carrying B．getting C．to take D．to bring14．At present, the price of the houses in Urumqi ________ than before. I can afford ________ a large one.A．are cheaper; to buy B．is cheaper; buy C．are lower; buy D．is lower; to buy 15．（2021·广东·广州市白云区白云实验学校八年级阶段练习）As my mother is lookingforward to ________ from me, please remember ________ this letter on your way to the company. A．hearing；posting B．hear；to post C．hearing；to post D．hear；posting 16．（2022·北京大兴·八年级期末）—Do you plan ________ for a party this weekend? —Yes, we do.A．to prepare B．prepare C．preparing D．prepared 17．（2021·陕西·榆林市第一中学分校八年级期末）My mother expects ________ around the world.A．to go B．going C．goes D．went 18．（2021·内蒙古·阿荣旗教师培训中心八年级期末）—Laura, we decide ________ on a trip this afternoon. will you join us?—-I’m afraid not. I have a composition ________.A．to go; to write B．to go; writing C．going; to write D．going; writing 19．（2021·黑龙江·肇州县教师进修学校八年级期末）The child is afraid ________ the bridge because he is afraid ________ off it.A．to cross; to fall B．to cross; of fallingC．of crossing; of falling D．of crossing; to fall20．（2021·天津和平·八年级期末）As the manager of the company, Mr. Brown can’t expect ________a day without working.A．spent B．spending C．spend D．to spend 21．（2021·湖南·通道侗族自治县教育科学研究室八年级期末）I find it important ________ English in the morning.A．read B．reading C．to read22．（2022·安徽淮北·八年级期末）Would you like ________ his sister ________ your party? A．invite; to B．to invite; to C．to invite; for D．invite; to 23．（2021·上海浦东新·八年级期末）They agreed ________ another meeting in one week’s time.A．to hold B．holding C．held D．hold 24．（2022·广东·深圳实验学校中学部八年级期末）If you try ________ your dream, you had better ________ effective steps and work hard.A．realizing; take B．to realize; taking C．realizing; to take D．to realize; take二、用所给单词的正确形式填空25．（2022·北京市陈经纶中学分校八年级期中）Children often expect _____ (see) more Monkey King cartoons.26．（2022·山东·巨野县教学研究中心八年级期中）I find it hard _______ (finish) the work ina day.27．（2021·黑龙江·绥滨县教师进修学校八年级期末）My mother doesn’t allow me ________ (eat) junk food.28．（2021·黑龙江·绥滨县教师进修学校八年级期末）Don’t forget _______________ (see) my parents when you are in Beijing.29．（2021·黑龙江·肇州县教师进修学校八年级期末）The shirt was dirty, but he managed _________ (clean) it.30．（2021·黑龙江·肇州县教师进修学校八年级期末）Tom didn’t need _________ (buy) a big house.31．（2022·吉林·长春外国语学校八年级期末）He needs ________ (clean) his room right now. 32．（2021·全国·八年级期末）They volunteered ________ (care) for those homeless people. 33．（2020·甘肃省会宁县教学研究室八年级期末）Could you tell me how ____(use) the computer?34．（2018·浙江·温岭市新河中学八年级期末）I hope ________ (watch) the action movie one day.35．（2020·吉林·长春外国语学校八年级期末）Some students found it difficult________(pronounce) difficult words.36．（2019·山西阳泉·八年级期末）Of all the TV shows, my father expects _______________ (watch) the news.第09讲动词不定式作宾语【基础知识】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。
动词不定式
subject
to do位于句首作主语
The usage of infinitive
It is important to learn English well .
形式主语
subject
学好英语是重要的。
It作形主，to do作真正主语
Practice
To do作主语， 谓语用单数
① _T_o__tr_a_v_e_l__ (travel) around China is my dream.
12 hours a day.
The boss makes the workers work (work) for 12 hours a day.
look at, see,
feel
watch, notice
(to) do
make, let, have
hear, listen to
NO.3
Summary
Infinitive —— structure
基本结构：to +动词原形
eg: He never w(a无n人ts 称to，w无at数ch的a变ga化m)e show. eg: He asked me not to watch game shows.
否定结构：not to +动词原形
Infinitive —— to & to
⑤ It’s nice __o_f___ him t_o__ta_k_e_ care of his young brother.
A. of , took B. of , to take C. for, to keep D. for , took
特殊句式： 1. It’s + adj.(修饰动作) + ( for sb. )+ to do sth. 2. It’s + adj.(修饰人) + ( of sb. )+ to do sth.