swim是动词,而swimming则是名词,表示游泳这项运动。swim,作及物动词时意为“游过;使浮起”,作不及物动词时意为“游泳;漂浮;浸;眩晕”。
第三人称单数:swims
现在分词:swimming
过去式:swam
过去分词:swum
swim是动词,只能做谓语
swimming可看成动名词,即名词,可作主语、be swimming作谓语,swimming还能做伴随状语
例如 he's thinking of something,swimming in the pool.
swimming还能做后置定语,修饰前面的名词
如bread is eaten by a fish swimming in the pool.
e.g. I usually swim a few laps as warm-up during practices.我一般都会在训练中先游几圈作为热身。
She swam the 400 metres medley ten seconds slower than she did in 1980.她400米混合泳的成绩比其1980年慢了10秒。
My hobbies are painting and swimming.我的兴趣是画画和游泳。
注:swim的现在进行时同样是swimming,不要把它和作为名词的swimming搞混了。
e.g. He is swimming right now.她现在在游泳。
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