题目内容
6.Jack and Susanhad known (know) each other since they were children,so nobody was surprised to hear that they were married.分析 Jack和Susan从小就彼此了解,所以听到他们结婚了没人感到惊讶.
解答 答案:had known
根据"so nobody was surprised to hear that they were married"可知,此处意为过去的过去,所以这里应该为过去完成时.过去完成时的构成为:had+过去分词,故答案为had known
点评 做这道题时要仔细阅读题中条件,然后写出所给单词的适当形式.
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