1.must的确是情态动词.
但是英语语法规定：如果用must/can/could/may/might在句中表示推测时,则其反意疑问句和这些情态动词无关,必须直接根据句子的时态和动词,进行相应变化.
2.此题恰好是用must表示肯定的推测：这本书一定是露西的.
所以其反意疑问句和must无关,变成：The book is Lucy's.
所以其反意疑问句为：isn't it.
3.再如：
You must be Tom,aren't you?
你一定是汤姆,不是吗?
说明选和不选的原因The book must be Lucy's,______?A isn' it B mustn't
2个回答
相关问题
-
Bob must be at home,________?A.mustn't he B.can't he C.isn't
-
Listen! His family must be quarrelling, ____? A．mustn’t it B
-
1.The task must be hard,isn't it?
-
It isn't my ball.Whose is it?It's___.A,her B,hers请问选哪个,为什么,
-
说明原因What＿ fine weather it is!A.a B.an C.the D./选哪个 说明原因
-
英语!为什么选D不能选A?_____,the pay isn't attractive enough,thoughthe
-
look at the girl ,is she nina?A must be B mustn't be C can b
-
请知道的详细说明所选原因,..1.Where's my cat?I can't ___it.A.look at B.lo
-
The book must be Li Ming's (改为否定句） 想说的是要不要把mustn't 改为can't
-
He's a good man,isn't it?A.He sure is B.He is sure 请问为何选A