作业帮Greens must have been to Shanghai ,_____they?A.hadn't B.didn't C.can't D.weren't还有haven‘t they
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Greens must have been to Shanghai ,_____they?A.hadn't B.didn't C.can't D.weren't还有haven‘t they
Greens must have been to Shanghai ,_____they?A.hadn't B.didn't C.can't D.weren't
还有haven‘t they
Greens must have been to Shanghai ,_____they?A.hadn't B.didn't C.can't D.weren't还有haven‘t they
同学,很高兴回答你的问题
正确答案：haven't they
即：The Greens must have been to Shanghai,haven't they?
翻译：格林一家人原来一定去过上海,不是吗?
解析：当must用来表示对过去的情况进行“推测”（must + have done）时,如强调对过去情况的推测（一般句中有过去的时间状语）,反意疑问句部分要用“didn’t + 主语”；如果强调动作的完成（一般没有过去时间状语）,反意疑问句部分要用“haven’t / hasn’t + 主语”.
例：She must have read the novel last week,didn’t she?
她上星期一定读了这本小说了,是吗?
You must have told her about it,haven’t you?
你一定把这事告诉她了,是吗?
你的这道题符合：如强调对过去情况的推测（一般句中有过去的时间状语）,反意疑问句部分要用“didn’t + 主语”；这个规则,所以后面填haven't thy
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不明白请继续追问,
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haven't they.
haven't they？
翻译疑问句通常就是用前半句的谓语动词加主语构成，前面肯定则后面否定，前面否定则后面肯定
前面句子是现在完成时，助动词是have，所以翻译疑问句就用haven't+主语