have+过去分词,和have been+过去分词的区别.都是现在完成时吗?
have+过去分词,和have been+过去分词的区别.都是现在完成时吗?
have+过去分词和have been+过去分词的区别
现在完成时的主动和被动语态都是HAVE BEEN 过去分词吗
have been+过去分词、与have+过去分词的区别
have been doing和 have +动词过去分词 的区别.
过去现在时 have /has been doing和have/ has +过去分词的区别
have+been+过去分词和have+过去分词有什么区别?
have been +过去分词,和had been+过去分词,有什么区别?
have been doing 和have +动词过去分词的差别.
have 动词过去分词.和have been 过去分词的用法
I have been busy since yesterday.现在完成时是have加过去分词,但这里的过去分词在哪里
在英语中现在完成时有时用have加动词过去分词,有时用have been加动词过去分词,这两种用法的区别是什么?