Linda can swim very fast.She is a good swimmer .为什么swim要双写m再加er?

Linda can't swim very well.(一般疑问句) Linda can swim very fast.She is a good swimmer .为什么swim要双写m再加er? 改写句子：I can't swim.Linda can't swim,either.I can't swim.( )( ) Linda. THEY CAN SWIM VERY FAST. goose can swim very well. I can swim very well.can是谓语?swim呢? my brother likes swim ,he can swim very well 改错 He can swim very (well ,good ）. He can swim very well改为同义句He ___ ___ ___ swim very well. 用所给单词的适当形式填空1. Linda can swim very fast. She is a good _____(swim).2. It's late. We can't play any _____(long).3. Mary is much _____(good) today.4. That is a new boy. _____(He) name is Jack.5. -Here's your book. -_____(Thank) Tom can swim very well.(改为同义句） Tom can swim very well.改否定句,怎么改! He can swim very well.(否定句） my sister can (swim very well .)对括号里提问 swim,l,can,fast,very,连词成句? s____(someone who can swim) She is a very good______ fast,swim,Kelly,very,can't.怎么造句 my father can swim evry well 对very well 提问