题目内容
19.He often does his homework after supper.(改为一般疑问句)Does he oftendo his homework after supper?
分析 他经常晚饭后做作业.
他经常晚饭后做作业吗?
解答 答案:Does,do.原句是一般现在时,do是实意动词,主语he,借助于does构成一般疑问句,后加动词原形do,故答案是Does,do.
点评 一、含有be动词(am/is/are/was/were)动词的一般疑问句,通常把be动词调到句首.
二、含有情态动词(can/may/must/could)的一般疑问句,把情态动词调到句首.
三、句子里没有be动词、助动词、情态动词等,就需要加助动词do,does,、did(过去式)来构成疑问句,加上这些助动词后,句子中谓语动词必须用原形.
其句型为:Do/Does/did+主语+动词原形+其它?
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