swim可以作名词为什么是go swimming 而have a swim

swim可以作名词为什么是go swimming 而have a swim 为什么是go swiming,而不是go swim swim有名词的含义为什么还要用go swimming呢?同样的,go shopping?为什么是swimming而不是swim呢？swim本身也具有名词词性，可不可以做互换？ swim为什么是双音节词谢 swim复数为什么是swimmers swim 名词swim的名词是什么~ 我经常去游泳 为什么是 go swimming 而不是 go to swim In summer,you can go _____(sail) and __(swim).为什么是swimming,不可以swim为什么不看can还有He likes the peaceful environment and _____(enjoy) go fishing 为什么用enjoys,不看likes吗? SWIM Swim swim draw,swim,的名词 swim（名词） swim名词形式 swim的名词形式 I want to go swimming.为什么是swimming而不是swim?有同义句吗. “go to swim”对吗? Lets go for a swim中的swim可以换成swimming吗swim在这里是名词 swimmming也可以是名词啊,可以换吗?还有是Let“s go for swimmng 可以吗,那这里的swimming 是名词,还是动名词,虽然它们的书写格式是一样的?