He (use) ______ swim in that river when he was a little boy.used to本题考查固定结构的用法。句

游客2023-09-27  27

问题 He (use) ______ swim in that river when he was a little boy.

选项

答案 used to

解析 本题考查固定结构的用法。句子中的时间状语when he was a little boy表示的是过去的时间,used to意思是“过去常常做某事”,用在此处同时符合语法要求和句意要求。
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