题目内容
4.I can sing and dance.(改为否定句)Ican't singor dance.
分析 --我会唱歌和跳舞.
--我不会唱歌或跳舞.
解答 答案:can't;or.考查否定句.本句含有情态动词can,变否定句直接在can后加not,缩写为can't.and否定句中通常改为or.答案是can't;or.
点评 考查否定句.通常是在be动词,情态动词后加not.一般现在时态,主语不是第三人称单数用don't,主语是第三人称单数用doesn't.一般过去时态用didn't.还有其它用法需要牢记.
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