题目内容
【题目】Some girls are playing on the playground. (改为否定句)
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【答案】Some girls are not playing on the playground.
【解析】
句意：一些女孩在操场上玩。该句be动词是are，变为否定句直接在are后加not，句子变为Some girls are not playing on the playground. 故答案为Some girls are not playing on the playground.
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