[视听材料] 英语句型转换点拔与训练 句型

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英语句型转换点拔与训练
　　一、肯定句变否定句的技巧
　　1.动词后直接加not。原句中含有be动词(am, is, are, was, were) 和助动词(have, has, had) 和情态动词(can, shall, will, may, should, would, might, had better等)时，要在动词后直接加not。如：
　　His mother has already called the police for help. (乌鲁木齐市中考题)
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