go together for swimming还是swim .为什么?

go together for swimming还是swim .为什么? go swim还是go swimming 为什么 i am go swimming还是i am go to swim lets go (swimming/swim) Shall we go for a swim?和shall we go for a swimming?那个正确?swim swim为什么变成swimming? I like to go fishing and swim .用swim还是swimming Let"s go for a swim中的swim可以换成swimming吗swim在这里是名词 swimmming也可 swim可以作名词为什么是go swimming 而have a swim I want to go swimming.为什么是swimming而不是swim?有同义句吗. Go for a swim与 go swimming都指去游泳,有何区别? go to swim 是否等于go swimming?