首页教育/科学升学入学高考

Who else can HELP me?

-----I rang your home yesterday。A man answered but I didn’t recognize the voice。 -----Oh, it______ my brother , Peter。 A。 must be B。
must have been C。 can have been D。 might be The key of it is B。 Please give me a careful explanation。。

全部回答

y***

2007-07-10

0 0

must be表示肯定推测，是对现在的推测 must have been也表示肯定推测，是对过去的推测 can have been是错误用法，不存在，can表推测的肯定句只用于can‘t的形式，如It can't be him. might be表示不确定猜测，是对现在的猜测，而此题应对过去事实猜测，所以排除

提交