must反意疑问句的用法you must start now,____?A.mustn't you B.dont;you 选A还是选B?

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must反意疑问句的用法you must start now,____?A.mustn't you B.dont;you 选A还是选B?
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must反意疑问句的用法you must start now,____?A.mustn't you B.dont;you 选A还是选B?
must反意疑问句的用法
you must start now,____?
A.mustn't you B.dont;you 选A还是选B?

must反意疑问句的用法you must start now,____?A.mustn't you B.dont;you 选A还是选B?
A

当然A了

选A
解析:
当陈述部分含有情态动词must时,我们便要分析一下must的含义。如果must 作“一定;要;必须”讲,反意疑问句须用mustn't或needn't;而当must作推测意义“一定是;必定”讲时,反意疑问句则需根据must后的动词原形选用相应的形式。例如:
He must work hard at physics, mustn't he? 他必须努...

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选A
解析:
当陈述部分含有情态动词must时,我们便要分析一下must的含义。如果must 作“一定;要;必须”讲,反意疑问句须用mustn't或needn't;而当must作推测意义“一定是;必定”讲时,反意疑问句则需根据must后的动词原形选用相应的形式。例如:
He must work hard at physics, mustn't he? 他必须努力学物理,是吧?
Tom must be at home,isn't he? 汤姆一定在家,是吧?

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