4. 不定式作宾补
• 1) 带to的不定式作宾补。很多动词如: allow,expect,teach,ask,order, force, permit(允许), tell, want, wish, forbid(禁 止), advise, persuade(说服,劝说), warn(提醒)等后面作宾补的不定式都带 to。
• To get here in one hour is difficult for him. ➢It is difficult for him to get here in one hour.
动词不定式作主语时,常见的it作形式主语的 句型有:
It is easy / hard / difficult / important / possible / necessary / good / bad…to do sth.
He is looking for a room to live in. There is nothing to worry about. I don’t have a pen to write with. The ice is hard enough to skate on. He bought a toy to play with.
2. 不定式作表语
• To see is to believe. • What I would suggest is to put off the
meeting. • My duty is to clean the classroom.
3. 不定式作宾语 I decided to ask for my money back. We wanted to buy another book. I got up late and failed to catch the early bus. 常用动词不定式作宾语的动词有: hope, refuse, learn, want, choose, decide, agree, manage, start, begin, plan.