英语语法：They have been gone.这里表达的不是被动态?有没有They have gone.这个说法的?

英语语法：They have been gone.这里表达的不是被动态?有没有They have gone.这个说法的? Where have they been? 英语语法 ...would have been 后面加什么? have been done 和 have been doing剑桥中级英语语法里面有一个单元，给了一个例句：They have been married for 20 years.用了have been done这个形式，为什么不是They have been marring for 20 years?或者They have married f They have a____ been there what have they been doing 是什么时态 What places have they been?怎么翻译? where have they been?是现在完成时吗? they have been in kate's for they have been the subject of debate they have been acting up more lately they have been there before.so have i they have been there before.(),() 改为同义句 英语语法--延续性动词和终止性动词的练习延续性动词和终止性动词的练习Mary and Rose____friends since they met in 2000.A.have made B.have been C.made D.have become They have been here once.把been换成came怎么样 having had 的英语语法问题节选：We really are finding,particularly with kids,they say they don't give me a history of having had blistering sunburns,because parents have really been talking about it.大意：我们实际上发现,特别是 they said they have been married for ten years They have never been opened.为什么不可以是They never have been opened. they have been here since 1988,对1988进行提问,（）（）have they been here?