不定式to用法详解和练习

1、Infinitive 动词不定式动词不定式 主语主语1.To be here at Christmas time is my dream.2. To go abroad is his dream.3. To say is easy, while to do is difficult.（这时可将其用形式主语（这时可将其用形式主语it来替换）来替换）It is my dream to be here at Christmas time.It is his dream to go abroad.It is easy to say, while it is difficult to do.宾语宾语 I

2、 want to buy a computer.She hopes to find a better job.I wish to go with you.Do you think it better not to go ?形式宾语形式宾语真正宾语真正宾语表语表语His work is to feed the animals.Her job is to look after the patients.My dream is to be a artisit.宾语补足语宾语补足语She asked me to help her.The teacher told him to come on time

3、.Edisons mother taught him to read and write. want sb to dowish sb to do get sb to dorequire sb to do find sb to be help sb to do作宾语补足语不带作宾语补足语不带to 的情况的情况:感官动词、使动词后面的感官动词、使动词后面的 to 常省常省略，但是被动语态中的略，但是被动语态中的 to 不能省略不能省略Let me do it.I saw him sing in the classroom.常见动词有：常见动词有：有些动词后面做宾补的不定式有些动词后面做宾补的不定式

4、不带不带toto，如，如hear（一（一听）听） see, watch, （两看）（两看）make, have, let（三让（三让） 例如：例如： I watch her sing in the next room. I heard her sing in the next room.定语定语Give me something to drink.I have two books to read.They have much food to eat.He asked for a room to live in.I dont have a pen to write with.The ice is

5、 hard enough to skate on.He bought a toy to play with.状语状语(adverbial)He came to show me his new CD player.I went there to see my teacher. She came back to get her English book.The boy was too frightened to move.(目的目的)(目的目的)(目的目的)（结果）（结果）He arrived so late to find the train leave.（结果）（结果）疑问词疑问词who, w

6、hat, which, where, when, how加加to do可构成不定式短语，在句中可用作主语、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。宾语、宾语补足语、表语等。When to leave has not been decided.I dont know what to do.He can tell you where to go.The question is who(m) to ask.(主语主语)(宾语宾语)(宾语补足语宾语补足语)(表语表语)不定式的其他用法你决定穿什么参加去参加面试了吗？你决定穿什么参加去参加面试了吗？Have you decided

7、what to wear to the interview?没人告诉我在哪买票。没人告诉我在哪买票。Nobody told me where to buy the ticket.It takes you ten minutes to get there.I hope to see him soon.His wish is to become an artist.People eat to live, but not live to eat.I have a lot to tell you.Its not right to be thinking of oneself.We often see

8、him play football.定语定语主语主语状语状语表语表语宾语宾语主语主语宾语补足语宾语补足语Pick out the infinitives and tell their functions.8. He pretended to read attentively when I came in. 9. It is of great help for us to learn English well.10.I didnt expect Mary to invite me to her birthday party.11.She listens to news every day so

9、as to find out whats going on.12.The car to be bought is for his sisters.13.The important thing in life is to have a great aim, and the determination to attain it.( 宾语）宾语）( 主语）主语）( 宾补）宾补）( 状语）状语）( 定语）定语）( 表语）表语）特殊的动词特殊的动词1). 只能后接动词-ing 形式作宾语的动词, 常见的有：suggest建议 practice练习 finish完成 keep保持cant help 情不自禁 mind介意 give up 放弃enjoy喜欢2）只能接不定式作宾语的动词，常见的有decide决定 refus拒绝 promise承诺 afford能够agree同意 hope希望 stop to do sth 停下来做 stop doing sth 停止做 forget to do sth 忘记要做 forget doing sth 忘记做过 remember to do sth 记得要做 remember doing sth 记得做过 try to do sth 尽力去做 try do