must（表推测）的反义疑问句怎么用
答案:1 悬赏:40
解决时间 2021-02-13 16:21
- 提问者网友：乏味沐染
- 2021-02-12 23:07
must（表推测）的反义疑问句怎么用
最佳答案
- 二级知识专家网友：晚安听书人
- 2021-02-13 00:12
陈述部分含有表示推测的must时，简短问句的谓语动词通常根据must后的动词的性质来定，如果是be动词，则根据主语选择相应的be动词；如果是实意动词的一般式，则根据主语选择适当的助动词do，does；如果是现在完成时的结构，则通常根据主语选择适当的助动词have或has，此时，若句中有具体的时间状语，简短问句的谓语动词则用did或be动词was/were。
如果是现在进行时的形式，则根据主语选择is或are。至于否定或肯定形式，依然遵守前肯定后否定，前否定后肯定的规则。
例如：
The food must be good, isn't it?
She must work here, doesn't she？
She must have arrived by air, hasn't she?
You must have read the book last month, didn't you?
The student must be working very hard, isn't he?
如果是现在进行时的形式，则根据主语选择is或are。至于否定或肯定形式，依然遵守前肯定后否定，前否定后肯定的规则。
例如：
The food must be good, isn't it?
She must work here, doesn't she？
She must have arrived by air, hasn't she?
You must have read the book last month, didn't you?
The student must be working very hard, isn't he?
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