been一定在被动语态的完成时用么?
been一定在被动语态的完成时用么?
had been 在这里的成分是?不会是完成时的被动语态吧?
have/has been done 是现在完成的被动语态
含有be动词的被动语态怎么变,have been done一定指被动吗
英语完成时和被动语态什么时候用被动语态 什么时候完成时、被动语态动词前加be/been
有没有完成进行时的被动语态have been being done的?
有动名词的完成时的被动语态这种说法么 having been done?
1.They have been married for three years.是完成时的被动语态吗?
现在完成进行时的主动和被动语态都是have been doing吗?
完成时被动语态为什么是have been done
Have been doing 的被动语态是?
have been done 什么东西?have been doing是现在完成进行时的被动语态嘛?