题目内容
6.Sam likes vegetables and fruit.(变为否定句)Samdoesn't like vegetables or fruit.分析 山姆喜欢蔬菜和水果.
山姆不喜欢蔬菜和水果.
解答 答案:doesn't like.
原句是一般现在时,主语是Sam三单,故借助于助动词does构成否定,后加原形like,故答案是doesn't like.
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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