My father __________ regularly for many years when he was in

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My father __________ regularly for many years when he was in his youth.
A was swimming B swam C has swum D had swum
为什么选B,在这里难道不是在过去一段时间持续发生的动作,为什么不选A

egularly表示频率为一段时间定期发生,所以这是一个常态动作,用一般过去时就可以
过去一段时间持续发生的动作要用完成进行时,而不是过去进行时.过去进行时只表示过去特定时刻发生的动作,不具备时间连续性.My father has been swimming 才是表示过去一段时间持续发生,所以A排除.
这个题里面有regularly,这个频率副词表示常态,所以完成时不合适,CD排除.
所以B是正确的.

My father __________ regularly for many years when he was in He _______football regularly for many years when he was youn He ______football regularly for many years when he was young He ___football regularly for many years when he was young He had played football regularly for many years when he was he played football regularly for many years when he was youn he played basketball regularly for many years when he was yo 7.He _____ football regularly for many years when he was you He (played) football regularly for many years when he was yo 1.He ________ football regularly for many years when he was he ______football regulaly for many years when he was yong. My father was in beijing for two years.对for two years部分提问