2018年学位英语考试复习要点（4）

　　动词不定式

　　不定式不能在句中单独用作谓语，但可用作主语、表语、宾语、定语、状语、宾语补足语、主语补足语等。

　　e.g.　To see is to believe.

　　The important thing is to save lives.

　　She likes to play with the child.

　　It was a game to remember.

　　I stayed there to see what would happen.

　　I want you to be happy.

　　He was seen to enter the hall.

　　·“for+名(代)词+不定式”结构

　　e.g.　It’s just inconceivable for a child to do that job.

　　·“of+名词(或代词宾格)+不定式”结构

　　It’s kind of you to say so.

　　·“疑问词+不定式”结构

　　疑问词who, what, which, when, where, how后加不定式可构成一种特殊的不定式短语。

　　e.g.　When to start has not been decided.