have seen had seen的区别 急要啊

have seen had seen的区别 急要啊 had ever seen和have ever seen的区别 I have seen this film.与I had seen this film.区别? have never seen 与have ever seen 的区别,怎么感觉在翻译的时候差不多啊 I have seen it与I had seen it have been seeing /have been seen/ have seen的用法. just saw 和 have just seen的区别? have you seen的意思 seem和seen的区别 never ()a man as happy as he i had seen had i seen i have se have seen 和seen的差别是什么?（急!） once to be seen 和once being seen的区别