作业帮how long haveyoubeen和how long did you skate?什么区别?
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/02 12:40:43
how long haveyoubeen和how long did you skate?什么区别?
how long haveyoubeen和how long did you skate?什么区别?
how long haveyoubeen和how long did you skate?什么区别?
how long haveyou been（不完整）现在完成时,动作延续到现在 how long did you skate过去时,过去进行的动作,没有延续