初级英语,How old were you when you how to run?whe

问题描述:

初级英语,How old were you when you how to run?whe
初级英语,
How old were you when you how to run?when did you learned how to ride a bike?
have you ever gone camping?
how long will she be in shanghai
请问这几句是什么时态?

第一句:过去式 第二句:现在完成时 第三句:将来时