2016年江西成考专升本英语考试复习笔记19

　　非谓语动词包括不定式、动名词和分词。否定形式在前面加not.

　　（一）不定式：to +动词原形

　　简单句中如果已经有一个动词做谓语，那么再有一个动词就要在这个动词前加to做不定式。不定式在句子中可以作主语、宾语、表语、宾语补足语、定语、状语等。

　　To see is to believe.（眼见为实）

　　有时用it做形式主语，真正的主语放在句子最后。

　　It only took us a year to finish the work.

　　Once you get into the habit of smoking， you’ll find it extremely difficult to get out of it.（get into the habit 养成……习惯）

　　She likes to play basketball this afternoon.

　　The important thing is to save people.

　　Not to grasp firmly is not to grasp at all.（不定式的否定放在to的前面）

　　She was the first person to think of the idea. （think of 想起）

　　He is always the first to come and last to leave the office.

　　I have nothing to say on the problem.

　　They warned him not to let out the secret.（let out 泄露）

　　We are all happy to hear of the good news.

　　Let’s hurry so as not to be late for the meeting. （so as to do sth. 以便为了做某事）

　　如果not不是放在to的前面，那么它不是否定不定式而是否定整个句子。

　　They didn’t warn him to let out the secret.

　　They warn him not to let out the