题目内容
12．Ken found a black pearl earring near the open safe．（改为一般疑问句）Did Kenfind a black pearl earring near the open safe？
分析 肯在打开的保险柜旁边发现了一只黑色珍珠耳环．
肯在打开的保险柜旁边发现了一只黑色珍珠耳环吗？
解答 答案：Did； find；根据给出的句子Ken found a black pearl earring near the open safe它为一般过去时态，句中的found为实意动词，把它变为一般疑问句需要用助动词did；后面的动词found用原形find；故填Did； find；
点评 熟练掌握一般过去时态的一般疑问句的正确表达，结合句意容易作答．
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