He must have been的用法.He must have been它的后面可以跟哪几种类型的词语?如果我想要表达“那时他一定在家里”。He must have been at home.must have been 有must had been 这种说法吗？如果有表达的又是什么意思呢？
问题描述：
He must have been的用法.
He must have been它的后面可以跟哪几种类型的词语?
如果我想要表达“那时他一定在家里”。
He must have been at home.
must have been 有must had been 这种说法吗？
如果有表达的又是什么意思呢？
答
必定！
He must have been at home.对
must had been 这种说法吗？ 我没见过！
答
楼主的语法感觉还行,但是有些乱了.如果梳理的更加清晰会更好.
首先要清楚must can should may might 等等情态动词后面动词一定要用原型态,也就是说must无论是做“猜测”还是“必须”的意思.must have 是对的,但是must had是错的～知道你想表示过去的完成动作,所以联想到“had done” 但是语法就是语法,规规矩矩.
“那时他一定在家”你的表达完全正确.也就是说从现在开始你要清楚,只要是表达过去完成动作的肯定猜测 就用"must have done" 不要去想"must had"从语法结构看,后面这个用法本身就是错的,根本没有的”