have been +过去分词是什么时态?
have/has been+过去分词是什么时态?
have been +过去分词是什么时态?
have been 加动词的过去分词是什么时态
i wouldn't have been +过去分词是什么时态?
have+过去分词是什么时态
have been doing sth had 加过去分词 have has 加过去分词 分别是什么时态?求什么区别?最
was/were+been+动词的过去分词是什么时态
过去分词的时态是什么?
has been 还有,解释一下has+been+过去分词的用法,是什么时态之类的.
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
been是什么的过去分词