有since的主句中,是用延续性动词,还是用瞬间性动词,还是两种都可以?

问题描述:

有since的主句中,是用延续性动词,还是用瞬间性动词,还是两种都可以?
例:The boy has started to play football since he was at the age of three.
句中可以用started to play 这种瞬间性的动词吗?

不可以的,瞬间性动词不等用于完成时.The boystarted to play footballat the age of three