【题目】She read a book yesterday.（改为否定句）
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【答案】She didn’t read a book yesterday.
【解析】
原句句意：她昨天看了一本书。时间yesterday试一般过去时的标志词，主语she，动词read，改为否定句，需要用助动词did+not缩写成didn’t，read的原形还是read，故答案为She didn’t read a book yesterday.
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