A friend of mine oftenswam in the river when he was young．题目和参考答案——青夏教育精英家教网—

2．A friend of mine oftenswam（swim） in the river when he was young．

分析我的一个朋友在他年轻的时候经常在这条河里游泳．

解答答案：swam．
一般过去时表示过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为．根据"when he was young"当他年轻的时候，是一个表示过去的时间状语，所有主句要用一般过去时，结合给出的英语提示"swim"所以要用swim的过去式swam，故填swam．

点评首先要掌握一般过去时的用法，然后结合具体的题目，就可以确定正确答案．

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