题目内容
9.My brother does his homework at school.(改为否定句)My brotherdoesn'tdohis homework at school.
分析 我的哥哥在学校做作业.
我的哥哥不在学校做作业.
解答 答案:doesn't do,原句是一般现在时,主语my brother,故借助于does构成否定,后加动词原形do,故答案是doesn't,do.
点评 含有be动词,情态动词或者助动词have/has的句子转化成否定时在其后面加上not,一般实意动词的否定式,通常应根据不同时态和人称在实意动词之前加don't,doesn't,didn't等.
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