发布网友 发布时间:2024-10-23 19:54
共4个回答
热心网友 时间:2024-11-19 02:46
1.must 表示推测时,其后的反意疑问句要根据must后的谓语动词一致。
你查到的几个句子有两个对,中间那个不对。
You must have studied English for three years, haven't you? / didn't you?
这个句子只能用haven't , 不可以用didn't.
2.在前面的陈述句中有具体的过去的时间状语时才用didn't 。所以第三个句子是正确的。
He must have finished it yesterday, didn't he?
那么你的单选题:He must have learn English for three years,___?
A.hasn't he B.haven't he C.mustn't he D.didn't he
正确答案就是A。
如果有疑问就hi我。祝你学习愉快!
热心网友 时间:2024-11-19 02:43
我认为是:选c,用什么问,用什么大。
这是我的理解,希望能帮到你!
热心网友 时间:2024-11-19 02:45
我觉得是A。
首先 hasn't 是与前面的have 是对应的,时态应该一致 ;一般mustn‘t只用于禁止的意思。
从时态一致来说应该前后对应,
不过如果是你们单元题目的话,可能考得是你们刚刚学的内容。
热心网友 时间:2024-11-19 02:49
1.must 表示推测时,其后的反意疑问句要根据must后的谓语动词一致。
你查到的几个句子有两个对,中间那个不对。
You must have studied English for three years, haven't you? / didn't you?
这个句子只能用haven't , 不可以用didn't.
2.在前面的陈述句中有具体的过去的时间状语时才用didn't 。所以第三个句子是正确的。
He must have finished it yesterday, didn't he?
那么你的单选题:He must have learn English for three years,___?
A.hasn't he B.haven't he C.mustn't he D.didn't he
正确答案就是A。
我相信我的理解,也祝你学习进步!