题目内容
8.At last,the case developed into a disaster.(改为否定句)At last,the casedidn'tdevelopinto a disaster.
分析 最终这件事发展成一场灾难.
最终这件事没有发展成一场灾难.
解答 答案:didn‘t develop.原句是一般过去时,有实意动词develop,改为否定句时要借助于did在后面加上not,并且developed还原成原形.故答案是didn‘t develop
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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