英语中带must的句子变反义疑问句怎么变?

问题描述:

英语中带must的句子变反义疑问句怎么变?

带must的句子变反义疑问句有三种
情态动词:You must go home,needn't you?
推测:He must be Li Lei,isn't he?
过去推测:He must have been to Beijing,didn't he?
我是从事英语的.不明可问.