在什么时候用延续性动词

看意思来用，而不是看词，比如说“跳一下”总不能从今天跳到明天吧 呵呵

延续性动词表示能够延续的动作

如：learn, work, stand, lie, know, walk, keep, have, wait, watch, sing, read, sleep, live, stay等。延续性动词可以与表示时间段的状语连用。

表示时间段的短语有:for+一段时间,for 2 years; since从句,since he came here; since+时间点名词,since last year, since 5 days ago; how long; for a long time等。
例:he has lived here for 6 years. you can keep the book for 5 days. i stayed there for 2 weeks last year. how long did you stay there last year?

本文来自学习网(www.gzu521.com)，原文地址：http://www.gzu521.com/campus/article/english/200706/153188.htm

延续性动词的用法特征
1.延续性动词可以用于现在完成时，其完成时态可与表示"段时间"的状语连用。表示"段时间"的短语有：for two years, during the past three years, since last year, how long等。如：I have learned English since I came here.自从我来到这儿就学英语了。
2.延续性动词不能与表示短暂时间的"点时间&