题目内容

【题目】Twenty years ago,I could buy things from shops.(变为否定句)

【答案】Twenty years ago,I couldn't buy things from shops.
【解析】

句意:20年前,她从商店里买东西。could是情态动词,变为否定句时,直接在其后面not,缩写成couldn't,所以答案是:Twenty years ago,she didn't buy things from shops.

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