having seen,seen,see ,seeing a doctor.有什么区别,分别什么含义

来源：学生作业帮编辑：大师作文网作业帮分类：英语作业时间：2024/11/19 18:06:18

having seen a doctor是从过去看医生直到现在,have done是指动作从过去延续到现在并可能延续到未来；seen是过去完成时,是指动作已经完成,指已经看过医生；see是一般现在时,指看过医生；seeing是现在进行时,指正在看医生.that's all.

having seen,seen,see ,seeing a doctor.有什么区别,分别什么含义 have you seen john today 和Do you see john today 有什么区别? there is nothing to see there is nothing to be seen 有什么区别! There was nothing to see和There was nothing to be seen.有什么区别, 例子：see-sees-seeing-saw-seen 请教see、seen、saw、seeing的用法? see a doctor 与see the doctor 的用法有什么区别 have just seen 和have already seen有什么区别呢 have just seen 和have already seen有什么区别呢拜托各位了 3Q He denied ___ these watches before.A.to see.B.seen.C.seeing. He is afraid of ___strangers.a.see b.seeing c.saw d.seen 感官动词如SEE与SEEING有什么区别?