题目内容：

to do 短语
To be a good student,he never goes to school without preparing his classes.这句话对吗?
to do短语,可以作为目的状语放在句首吗?
in order to do呢?
还是只能是动词的ING形式,放在句首做状语?
Beijing a good student,he never goes to school without...

优质解答

你问的都是非谓语动词,这讲起来需要一些时间和功夫了,简单的说：To do是不定式,可以放在句首做主语.比如：To see is to believe!（眼见为实）这句话 to see是不定式主语,to believe 是不定式做表语.你说的动词ing放...