mustmoodlemust 和nust be的区别
2021-07-31
must have done和must be的区别?must have done一定做过(表示过去做过的事对现在的影响)
例:You must have lied.你一定撒谎了。
must be一定是 表示一般的陈述
例:You must be a student.你一定是个学生。
PS:绝对权威!must have been doing与must have been done都表示推测,有什么区别呀?其实这两个的区别可以这样来推...