Unit 2 I’ll help clean up the city parks. 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，在句子中不能作谓语。在句中可以作主语、表语、宾语、宾语补足语、定语和状语。 用法: 1.用作宾语:(v.+to do) I want to buy a computer. She hopes to find a better job. I wish to go with you. need to do; learn to do; agree to do; plan to do; decide to do; refuse to do; begin to do; start to do ; try to do; hope to do; wish to do;l ike to do; would like to do;want to do 2.作宾补:She asked me to help her. The teacher told him to come on time. Edison’s mother taught him to read and write. want sb to do;wish sb to do;get sb to do;ask sb to do;tell sb to do ;like sb to do;would like sb to do; help sb to do 3.作状语:I went there to see my teacher.（目的）She came back to get her English book.（目的） The box was too heavy to move. （结果） 4. 动词不定式的否定形式由“not+动词不定式”（not to do sth.）构成。 Tell him not to be late. The policeman told the boys not to play in the street. 5.疑问词who, what, which, where, when, how加to do可构成不定式短语，在句中可用作主语、宾语、宾语补足语、表语等。 When to start has not been decided.（主语）I don’t know what to do. （宾语） He can tell you where to get the book.（宾补)The question is who(m) to ask. (表语) 6.不带to的情况, 常见动词有：一感：feel;二听：listen to, hear;三让: let, make, have; 四看: see, look at, watch, notice; 五发现：find 比较：see/hear/find/watch sb. do sth. see/hear/find/watch sb. doing sth. (看见某人做了某事） （看见某人正在做某事） Exercise： 一.说出句子中的动词不定式，及在句子中作什么成分。 1.It takes you ten minutes to get there. 2.I hope to see him soon. 3.His wish is to become an artist. 4.People eat to live, but not live to eat. 5.I have much homework to do. 6.It’s not right to be always thinking of oneself. 7.We often see him play football. 二.单选题 1.—I didn't hear you come in just now. —That's good.We tried __ any noise, for you were sleeping. A．not make B．not to make C．to make D．making 2.In order____for the meeting, my sisterforced herself to get up earlythis morning. A．not to be late B．not being late C．to be late D．being late 3.Our parents often tell us not alone in the river in summer. A.swim B.to swim C.swimming D.swam 4.The father is creative enough so many nice toys for his daughter. A.buying B.making C.to buy D.to make 5.I often saw the boys in the river. A.swam B.swimming C.to swim D.swim 6.—It’s important for us to know all the subjects. —Yeah，group work is my favorite. A.how to study B.when to study C.which to study D.what to study 7. is not easy to look after a little baby. A.The B.What C.It D.How 8.I hope you next Sunday. A.see B.to see C.sees D.seeing 9.Uncle Ted was very rich. But now he has no place to . A.live B.live on C.live in D.live with 10.Students should learn how ________ problems. A．solving B．can solve C．solve D．to solve 11. Jane was shy. She would not invite her classmates___speaking English. A．practice B．practices C．practicing D．to practice 12.They looked for him everywhere and found him __ under the tree. A. lies B. lying C. lay D. lain 13.I saw him __ the supermarket just now. A. entered B. entering C. enter D. to enter 14.-Do you remember me somewhere in Hangzhou? -Yes. I think that’s 2 years ago. A. see B. seeing C. to see D. saw 15.The scientist stopped ______ to me though he was busy. A. talking B. to talk C. to have talk D. having talk 三.汉译英 1.他想借用我的录音机。 2.他们开始读和写。 3.李琳喜欢玩什么？她喜欢踢足球。 4.你长大了想做什么？ 四.句型转换 1.I would like to be an animal doctor when I grow up.（改为同义句） I an animal doctor when I grow up. 2.could，you ，the，kids，ask，let，you，hospital，visit，them，cheer，and，up，to，the（连词成句） . 3.She decided that she would give away her old books to others.（改为简单句） She decided her old books to others. 4.To do sports is important for us.（改为同义句） It for us sports. 本文来源：https://www.wddqw.com/doc/ae22fc2500d8ce2f0066f5335a8102d276a26183.html