1. 1.To help people out of trouble is a policeman’s duty. It is necessary for university students to master a foreign language. It is necessary for university students to master a foreign language. It’s clever of you to work out the difficult problem. It’s clever of you to work out the difficult problem. 2. The enemy sought to kill him ， but he managed to escape. I didn’t expect to survive that long. I didn’t expect to survive that long. I want to have a word with you. I want to have a word with you. The secretary didn’t know what to do when the manager was away. The secretary didn’t know what to do when the manager was away. Both Galileo and Zhang Heng found it difficult to make people Both Galileo and Zhang Heng found it difficult to make people believe that their theories were correct. believe that their theories were correct. 3. My work today is to clean up the room. His dream is to be a musician. His dream is to be a musician. He seems/appears to be very happy these days. He seems/appears to be very happy these days. To see is to believe. To see is to believe. 主语 subject 宾语 object 表语 predicative 不定式的功能 主语 / 表语 注：不定式作主语时常用 “it” 作为形式主语；另外注意复合结构 for/ of +sb. to do 注：不定式作宾语，后跟宾语补足时用 “it” 作为形式宾语；

2. 4. Would you give him something to eat? They led a hard life and only had a cold room to live in. They led a hard life and only had a cold room to live in. He was the first to come this morning. He was the first to come this morning. 5. Nowadays a great number of people go abroad in order to seek their fortune. their fortune. He entered the room, only to find everything had been stolen. He entered the room, only to find everything had been stolen. I was surprised to learn that he had engaged to the king’s daughter. I was surprised to learn that he had engaged to the king’s daughter. 定语 attribute 状语 adverbial ( 表示目的, 结果, 原因 ) 注： 1) 不定式作定语时，常与被修饰词有逻辑上的动宾关系, 不用被动语态； 2) 序数词后一定要跟不定式做定语. 2) 序数词后一定要跟不定式做定语. 目的 : in order to 结果 : enough to only to so as to too… to… never to so as to too… to… never to 7. He asked me to finish the work ahead of time. Doctor Li advised my father not to smoke. Doctor Li advised my father not to smoke. I often hear him sing the song. I often hear him sing the song. He was made to work long hours at one time. He was made to work long hours at one time. feel, look at, see, watch, notice, observe, listen to, hear, sb. do let, have, make sb. do 宾补省略 “to” 主补不省略 宾补 object complement

3. 1)be known/said/believed /reported/considered + /reported/considered + 2) seem/appear 2) seem/appear 3)happen/pretend 3)happen/pretend to do/to be done 经常性和将来的动作 to be doing 正在进行 to have done/have been done ( 已经完成或谓语动词之前 ) 1. I would like you _________ ( not stay ) at home all day. 1.She seemed ___________(know) everything in the world. 2.She seemed ______________(review)the plan when I came back. 3.She seemed __________________(teach) English for several years before she came here. before she came here. 4.The book is said _______________(publish) next month. 5.The book is said _______________________ (publish) already. to know to be reviewing to be published to have been published to have taught 不定式的形式 : 主动 被动 不定式的形式 : 主动 被动 一般式 : _______________ ________________ 进行式 : _______________ ________________ 完成式 : _______________ ________________ to do to be done to do to be done to be doing / to be doing / to have done to have been done to have done to have been done 否定式 : not to do not to stay not to stay

4. 1.I happened to ____________ (eat) the apple when my boss asked me to finish the printing. me to finish the printing. 2.He seems ______________ (talk) with his teacher over there. He seems ______________ (talk) with his teacher. He is coming. He seems ______________ (talk) with his teacher. He is coming. 3. Madam Curie is believed to ______________ (discover) Radium. 4.She’s said to ___________ (die) for several years; no wonder her appearance frightened so many people. appearance frightened so many people. 5.It’s an honor for me ______________ (invite) to the party. 6.It’s an honor for me _________ (invite) you to the party. 7.The novel is said to _____________________(translate) into several languages. several languages. 8.I’m going to Beijing. I have a lot of things _______ ( take). 9.I’m going to Beijing. Do you have anything ___________ (take). 10. The house needs _______________________ (clean). be eating to be talking to be talking to have talked have discovered have died to be invited to invite have been translated to take to take to be taken to be taken to be cleaned / cleaning to be cleaned / cleaning