have been的been是分词还是过去
have been的been是分词还是过去
现在完成进行时的被动语态结构是have been +过去分词还是have been+doing
have+过去分词和have been+过去分词的区别
have been+过去分词、与have+过去分词的区别
have been doing 和have +动词过去分词的差别.
have been doing和 have +动词过去分词 的区别.
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
我知道have/has+been+过去分词.是被动语态...
been是谁的过去分词?
been是什么的过去分词
动词过去分词的形式是-ed还是done 如are的过去分词是were还是been
have been 加动词的过去分词是什么时态