神马作文网was/were been doing 和was/were being done 区别是什么?分别表示什么?
was/were been doing 和was/were being done 区别是什么?分别表示什么?
been和was were有什么区别
done 和 was/were done 区别
being done 和was /were done的用法和区别 老师说being done 是放在介词之后的,
did和was/were+done都表示一般过去式,二者的区别是什么?
was doing、had been doing和had been done都有什么区别?
be.am.is.are.were.was.been.being.分别是什么时候用的
have being done 和have been doing 的区别是什么?分别举个例子．
was/were doing/ to do 分别是什么时态?怎么有的用过去式表示将来?
英语were和was有什么区别?
was 和 were有什么区别?
am\are\is was\were been 分别是什么时态?