题目内容
12.By 5.30yesterday afternoon hehad finished (finish) writing the laboratory report.分析 昨天下午5:30以前他已经完成了实验报告.
解答 答案:had finished
分析句子结构可知所给动词在句中作谓语,根据句中的时间状语为 By 5:30 yesterday afternoon"昨天下午5:30以前"表示在过去某个时间以前发生的动作(可说是过去的过去),故确定该谓语动词的时态为过去完成时,其结构为had+动词的过去分词,套用结构,故填had finished
点评 分析句子结构确定所给词在句中作谓语,再结合时间状语确定正确的时态,套用结构即可写出正确答案.
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