must be是被动语态吗

must be是被动语态吗 there must be 有被动语态吗 请问高手must be doing 有被动语态吗 形式是怎么样的 may even be是被动语态吗 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 The child must be taken care of.怎么是被动语态 i must be paid for this 这句怎么翻译啊?看起来是被动语态 The medicine must be kept cool不是说系动词没有被动语态吗周报里有这道题 the room must be kept wet.变成被动语态! 英译汉的一道题他一定是被杀了这么说可以吗?He must be be killed我想must be 表示推测而且是肯定 被动语态得用be killed 那么用两个be连着用吗? 英语被动语态的问题1 thousands of buses had to be provided 这句话是被动语态吗,在语态表上我查不到,我记得 had to 不是必须的意思吗,请讲讲,再翻译下这句话.2 many things must be done 这句话是被动语态 your early reply would be appreciated是被动语态吗 to be是被动语态吗?举个例子 be used to doing是被动语态吗 be based on中的based是被动语态吗 be focused on这里的focused是被动语态吗? 什么是will be published,是被动语态吗?同标题 the examiner must have been pleased with my performance 是被动语态吗?have been pleased with my performance这句话是被动语态吗?还是be pleased with