Lingling often goes swimming on weekends 为什么swim要加ing?这句话是什么

Lingling often goes swimming on weekends 为什么swim要加ing?这句话是什么 went swimming 为什么swim要加ing swimming lesson为什么swim要加ing in summer,we often go swimming 为什么swim要加ing? He often swimming为什么要加ing he often goes swimming and runs 还是 goes to swim and runs 为什么 i like swimming为什么加ing而i can swim为什么不加ing Did you go swimming的swim要加ing吗? he usually goes swimming in his fer time为什么要加ing swimming club 中的swim为什么要用ing形式? Gao Shan often goes (swimming)(swim)in the Summer.请问为什么这样填,还 My mother often (goes shopping ) on weekends.