B7U1 Grammar: Revise the Infinitive 复习动词不定式一．仔细阅读下列句子，并写出不定式在句子中担任的成分。1. To look after my pets properly takes a lot of time but I find it worthwhile.(= It takes a lot of time to look after my pet properly…) （主语） 2. A big company has decided to buy it from me. （宾语）3. In the library I noticed Diana talk for a moment with David. （宾补）4. My ambition is to work for a firm that develops computer software when I grow up. （表语）5. Just accept them for who they are，and give them encouragement to live as rich and full a life as you do. （定语）6. I have to work hard to live a normal life. （状语）7. I am happy to have found many things I can do. （状语）概念: 动词不定式是非谓语动词的一种， 形式为 to do。这里的 to 是不定式标志，无意义，有时可省略。其否定形式为 not to do。 它在句子中可作主语、宾语、宾语补足语、表语、定语和状语。动词不定式在学习中还要要注意动词不定式的时态和语态，正确运用不定式。二．基本形式1. I plan to attend the meeting. (to do) 不定式 to attend the meeting 在其谓语动词 plan(同时，之后？)发生。2. To love and to be loved are both great happiness. (to be done)不定式 to love and to be loved 与谓语 are both great happiness (同时，之后？)发生。3.They are said to be working hard.据说他们工作得很努力。(to be doing)不定式 to be working hard 与谓语动词 are said (同时，之后？)发生。4. I am sorry to have kept you waiting. (to have done) 不定式 to have kept you waiting 发生在谓语动词 am sorry(之前， 之后？)。5. The car seems to have been repaired many times. (to have been done) 不定式 to have been repaired 发生在谓语动词 seems(之前， 之后？)。6. He is said to have been working in that factory for twelve years. (to have been doing) 不定式 to have been working 在谓语动词 is...
