after doing还是do

after后面加doing还是do

“after doing”。after为介词，根据介词后面如果要加动词，只能用动词的现在分词形式，所以after后面不能用do，只能用doing。

例句：You may have a rest after doing your homework.做完作业后你可以休息一会儿。

“after doing”成立，但“after do”不成立。其关键点在于：after为介词，介词后面如果用动词，只能用动词的.现在分词（动名词）形式，即doing作做宾语。

after doing例句

How do you feel after doing it for so long?

你打了这么长时间的太极拳，感觉如何？

He improved his grade after doing well on the last exam.

自从上次考试表现不俗之后，他的成绩就开始提高了。

You may have a rest after doing your homework.

做完作业后你可以休息一会儿。