swim和swimming的区别
区别是时态不同，swim是动词原型，swimming是现在分词形式，举例如下：
the golden fish swims around in the fish tank everyday.
she likes swimming in the summer.
区别是时态不同，swim是动词原型，swimming是现在分词形式，举例如下：
the golden fish swims around in the fish tank everyday.
she likes swimming in the summer.