at the swimming pool和in the swimming pool有何不同 要速度

swimming (at)还是(in) the swimming pool --------- Mike like swimming at the pool? i am swimming at the pool The boy is swimming at the pool.为什么是at the pool?用in the pool i am swimming at the pool对 am swimming 提问 at the swimming pool和in the swimming pool有何不同 要速度 The dog is swimming at the pool ,对at the pool提问 i'm swimming at the pool对划线部分提问 She is swimming at the pool改为一般疑问句 I'm swimming at the pool.(一般疑问句) --------- Mike like swimming at the pool?是is 还是are we always walk slowly at the swimming pool.(同意句) i am swimming at the pool 为什么不是in the pool look.the man with his friends ( )at the pool.括号里应填：is swimming或are swimming She is swimming（at the pool)对括号句子提问 ___ ___she swimming? Some children are swimming at the pool.(疑问句并回答) __ ___ children ___ at the pool?No,__ __. 为什么ing形式一般疑问句不能用do比如She is swimming at the pool改为一般疑问句是Is she swimming at the pool?为什么不是Does she swimming at the pool?想不通,请讲解,谢谢! Steven is at the swimming pool.这句子...这句子对吗?at的运用?