主要常用瞬间动词
arrive， borrow， buy， close， fall， finish， go， join， kill， hit， leave， lend， die， marry， open， reach， return， start， stop， recognize see throw
瞬间动词转换成持续性动词
瞬间动词用于完成时态不能与一段时间状语连用，须转换成持续性动词。
1、用相应的延续性动词替换的有：
buy---have borrow---keep put on----wear catch/get a cold---have a cold come/go/become---be 等。
eg. 1.We have had the TV set for 3years.
2、I have kept the book for 2 weeks.
2、转换成be+名词的有：
join the army----be a soldier join the Party----be a Party member go to school----be a student 等。 eg. 1.He has been a soldier for 5 years. 2She has been a student for 2 months.
3、转换成be+adj/adv