Heoftenswimsinsummer 句型转换？

He often swim in the evening swim加不加s？~

这是单数第三形式，swim要加s。

B 试题分析：句意：我的父亲非常喜欢游泳。他常常在夏季练习游泳。动名词做宾语表示抽象动作，结合语境可知选B。点评：不定式作宾语表示具体的将要进行的动作，一般不用于介词后面。动名词作宾语往往表示抽象的，反复发生的动作。介词后面一般接动名词作宾语，也有部分动词后接动名词做宾语，注意和不定式作宾语表达含义的不同。

否定句：He doesn't often swim in summer
一般疑问句：Does he often swim in summer?
注意点：本句为一般现在时，主语为单数第三人称。否定句为：主语+doesn't+动词原形+...
一般疑问句为：Does +主语+动词原形+...?

Does he often swim in summer?

Does he often swim in summer?
He doesnt often swim in summer.

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