题目内容
3.They kept on talking until the teacher came in.(改为同义句)They didn'tstop talking until the teacher came in.
分析 他们一直在说话直到老师进来.
他们直到老师进来才停止说话.
解答 答案:stop talking.
原句表示他们一直在说话直到老师进来.说话的动作一直到老师进来才停止,用not…until表示直到…才…,原句是一般过去式,故借助于did,构成didn't,停止说话用stop talking.故答案是stop talking.
点评 熟练掌握常用句型和固定短语以及常用词汇,根据句意和语法要求作出正确解答.
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