题目内容
17．
homework，last night
He was doing homework at 9 o'clock last night．．
分析 昨晚上9点他正在做作业．
解答 答案：He was doing homework at 9 o'clock last night．根据图片结合提示词可以得到的信息有：主语为he，动词短语为do homework，时间为昨晚九点 at 9 o'clock last night．根据时间可判断本句的时态为过去进行时（was/were+doing）．句意为：昨晚9点他正在做作业．主语he为第三人称，故谓语动词用was．故答案为：He was doing homework at 9 o'clock last night．
点评 本题考查过去进行时．根据图片，找出能用的所有信息，联想出句意，判断时态，写出正确的句子．
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