早教吧 育儿知识 作业答案 考试题库 百科 知识分享

you'dbettergooutforawalkaftersupper,-------?(反义疑问句)youmusthavebeentiredafteralongwalk,------?第二道答案是WEREN’T,为什么不用mustn't?不能用mustn't为什么不用haven't而偏偏用weren't

题目详情
you'd better go out for a walk after supper,-------?(反义疑问句)
you must have been tired after a long walk,------?
第二道答案是WEREN’T,为什么不用mustn't?
不能用mustn't 为什么不用haven't 而偏偏用weren't
▼优质解答
答案和解析
第一个应该wouldnot you?
第二个是因为must have been 表示对过去发生的事情的肯定推测,坚决不能用mustn't,因为mustn't是表示明令禁止的.