题目内容
1.Mary does her homework every day.(改为否定句)Marydoesn'tdo her homework every day.
分析 玛丽每天做作业.
玛丽每天不做作业.
解答 答案:doesn't do.原句是含有实意动词do的一般现在时,主语Mary故借助于does构成否定句,后加原形do,故答案是doesn't do.
点评 本题考查肯定句变否定句,做此类题时,需在句子相对应的助动词后加not,若动词为三单或过去时,动词需还原成原形.
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