题目内容
13．He has lunch in the dinning room．（改为否定句）Hedoesn'thave lunch in the dinning room．
分析 --他在餐厅吃午饭．
--他不在餐厅吃午饭．
解答 答案：doesn't have．考查否定句．由has动词第三人称单数，可知是一般现在时态，含有实义动词，主语是he第三人称单数，变否定句在实义动词前加doesn't．实义动词变原形have．答案是doesn't have．
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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