jiangyun1982
幼苗
共回答了18个问题采纳率:83.3% 举报
考的是情态动词 举例说明
1.You mustn't stand near the river .(表示禁止)
2.---The girl speaking to him must be his sister(用于肯定句,对现在的推测)
---No,she can't ,she is in France ( can't 用于否定句,对现在的推测 )
3.You shouldn't(不应该 表示责备)/ mustn't ( 表示禁止)take the book out of the library.
4.-He must have known the news (用于肯定句,对过去的推测)
--He can't have .(用于否定句,对过去的推测)
1年前
2