A boy can swim very well.A boy swims very well .这两句改成过去时怎么改呢?

A boy can swim very well.A boy swims very well .这两句改成过去时怎么改呢? 改为同义句When I was a boy,I could swim very well. ------ ------ ----- ,I could swim very well. s____(someone who can swim) She is a very good______ THEY CAN SWIM VERY FAST. goose can swim very well. Linda can swim very fast.She is a good swimmer .为什么swim要双写m再加er? can the boy swim?的回答 连词成句：boy can the swim (.) can the boy swim改为肯定句 The boy was a( ) to swim when he was very young. I can swim very well.can是谓语?swim呢? 区分be able to和can.My brother( )swim very well.介词填空.The boy is excited( )the good news. Can a dog swim? when i was a boy,i could swim very much同义句_ _ _ ,i could swim very much 横线上写哪三个单词 my brother likes swim ,he can swim very well 改错 He can swim very (well ,good ）. 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) The litter boy can swim (swim swims )in the river为什么,后面选swim