为什么I can go swimming (swim)加ing而I can see the flowers不加(ing)

为什么I can go swimming (swim)加ing而I can see the flowers不加(ing) i like swimming为什么加ing而i can swim为什么不加ing 1.i want to go swimming 2.where do you swim 为什么一个加ing一个不加ing I am going to go swimming tomorrow.swim为什么加ing I can help kids with swimming中swimming为什么要加ing Can you help kids with swimming?swim为什么加ing 又为什么加with went swimming 为什么swim要加ing swimming lesson为什么swim要加ing I like watching my goldfish swim around.为什么swim不加ing啊? he practices playing the piano every daay为什么play要加ing而 I see Did you go swimming的swim要加ing吗? I want to join the swimming club为什么swimming要加ing?