不定式语法教学PPT课件课件.ppt

infinitive; ;1.1不定式构成谓语 1）不带to的不定式和某些助动词构成谓语： Will /shall /would /should Would you like me to interpret for you ? Will you please call back again in a little while? 2)不带to的不定式和情态动词构成谓语： We must keep this in mind. We’d better wait and see. ;3)不定式和某些动词构成谓语： ought to/have to/ be able to/happen to/get to/ seem to/appear to/be going to You ought to be prepared for the worst. I’m sorry I haven’t been able to do much. 4)不定式和某些形容词构成复合谓语 Be + adj. + to do Bound/sure/certain/likely/apt/due The talk is due to start on Monday.预期 He was apt to become excited.有…倾向 5）不定式和某些被动结构构成复合谓语 This was thought to be impossible. ; ;2)It + 名词 +不定式 It is an honour to meet you. It is a good habit to eat slowly. 3)It +动词（宾语）+不定式 It feels good to be out here for a while. How long does it take to fly across the Pacific Ocean? 4)It +be +介词短语+不定式 It is beyond me to explain these. It is not within my power to change his view. ;1.3 不定式作宾语 1)不定式作宾语时特别多，许多动词都可以跟这种宾语 afford agree aim arrange ask attempt bear begin bother care choose claim consent continue dare decide decline demand deserve desire determine endeavour尽力 expect fail forget guarantee保证 hate help hesitate犹豫 hope intend learn like long love manage mean need offer neglect忽视 plan pledge prefer prepare pretend promise prove refuse remember resolve scorn嘲笑 seek strive swear threaten trouble try understand volunteer vote vow发誓 wait want wish We can’t afford to stay at a five-star hotel. Don’t bother to answer the letter personally. ;2）不定式和一连接代（副）词一道构成宾语 We have to find out where to buy food cheaply. She wondered whether to turn left or right. 3)不定式和一连接代（副）词一道构成介词宾语 We also had a discussion about what investment to make. Then there is the problem of what courses to offer. 4)偶尔可使用一个先行词it作形式上的宾语，而把不定式转放到句子后部去 She took it on herself to apologize to me.她亲自来向我道歉。;1.4 用不定式构成复合宾语 1）许多动词可跟一个由“名词（代词）+不定式”构成的复合宾语： advise allow ask beg bribe cause