29 非谓语动词的to不定式表示目的
to不定式表示目的
(1)in order to + v 表示目的。
(2)so as to + v 表示目的。
to + v也可以表目的
上面的三个句型后面的v不一定都是动词,也可以是动词词组
(3)由 in order to 引导的目的状语,置于句首,句尾都可以。
由so as to 引导的目的状语,只能置于句尾。
1. (句尾) I’ve written it down in order to remember it. / (句首)In order to remember it , I’ve written it down.
我写下来是为了记住它。
2. He shouted and waved so as to be noticed.
他大声喊并且挥手目的是被注意到。
(4)它们的否定形式分别在to 前加not.
1. I’ve written it down in order not to forget it.
我写下来是为了不忘记它。
2. He said nothing so as not to be noticed.
他什么都没说,目的是不被注意。
练习:
1. He gets up early in order to/so as to (目的是) arrive at school on time.
这里都是句尾,所以in order to 和 so as to都可以引导目的状语。
2. He wrote it down in order not to / so as not to (目的是不) forget it.
目的状语表否定,直接在to前面加not就行