题目内容
4.Lisa bought a souvenir in the Gift Shop yesterday.(改为否定句)Lisadidn't buya souvenir in the Gift Shop yesterday.
分析 丽萨昨天在礼品店买了一件纪念品.
解答 答案:didn't buy 根据题意要把原句改为否定句,原句为一般过去时,改为否定句时需要借助于助动词did的否定形式didn't后接bought的动词原形buy.故答案为:didn't buy.
点评 作答时需要区分句子的时态,掌握动词的过去式和原形之间的变化.
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