have been done 是被动语态吗.she has benn all over China by plane .这句话怎么回事.

must have been done是什么被动语态如will be done是一般将来时被动语态,can be done是情态动词被动语态 被动语态be done中 be是什么词性?还有现在完成时的被动语态have been done 中have been是什么词性?是助动词系动词还是…… have been done的用法have been done 是现在完成时的被动语态?那 They have been married for 10 years.这是被动吗?可以说被结婚? have been done 是被动语态 have sth done 也是被动语态 我有点蒙了.谁能帮我举个例子 have been done 什么东西?have been doing是现在完成进行时的被动语态嘛? is done,was done的被动语态是?is being done,was being done,has been done,had been done,will be done的被动语态是? have done还是be done是被动语态, 问下被动语态问题,have been done 是现在完成时的被动语态,那we have done this homework怎么改被动?应该是This homework has been done by us,但是翻译怎么都不对啊. BE BEING DOING/BE BEING DONE/HAVE BEEN DONE哪个是进行时的被动语态啊求详解 have been married 是被动语态吗 含有be动词的被动语态怎么变,have been done一定指被动吗 have been done 是被动语态吗.she has benn all over China by plane .这句话怎么回事. 完成时被动语态为什么是have been done为什么不是 have be done什么情况下 be变成been 几个英语时态1.Will be doing 是被动语态的进行式吗?2.Will be done / Can be done / to be done 是被动语态的完成式吗.3.I have been living here for 3 years.这是主动还是被动 .但HAVE BEEN DONE 被动呀.因为我写邮件 what( )with the old books?a.has been done b.has done c.have been done d.have done 为何用被动语态 must have donemust have done 的用法详细说明.可以归结为虚拟语气里面的么?must have been down 是must have down 的被动语态么 现在完成时改被动语态什么时候用has或have been done have been here 是被动语态吗有have been 这个不是被动的意思吗