题目内容

_______Mary have to make dinner after school?
A．IsB．AreC．DoD．Does
D

试题分析：句意：玛丽放学后必须做晚饭吗？have to 不得不，构成疑问句时用do/does帮忙，句中玛丽为第三人称的单数，故选D
点评：一般疑问句的构成将be动词提前，或是借助do/does/did来构成一般疑问句。另外一般疑问句的回答，遵循什么提问，用什么来回答的原理。be动词的提问用相对应的be动词来回答，do/does/did提问用相应的词来回答。注意肯定用Yes,+主语+助动词；否定用No,+主语+助动词的否定式。
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