I have been busy since Monday这个句子中哪个是过去分词?
I have been busy since Monday这个句子中哪个是过去分词?
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
I have been busy since yesterday.
英语句子There have been changes here.中have been 后不是应该是动词而且是过去分词吗
过去分词beenHe has been busy since last week为什么不直接用busy的过去分词,而是用
过去完成时可以have+动词过去分词,也可以have+been如I've lived here since 1987或I
have been doing sth 和 have +过去分词 有什么不一样?看见since 之类的词 是应该用哪种形
I have been sick since yesterday.中have been 是什么是时态为什么要用been.
have been的been是分词还是过去
i wouldn't have been +过去分词是什么时态?
have i+过去分词
“I like Monday because I have P.E..”这个句子中because引导的从句修饰的是谁,是