He can swim very well.(否定句）

He can swim very well.(否定句） He can swim well的否定句 "Tom can swim very well."改否定句,怎么改! He can swim very well改为同义句 Tom can swim very well.(改为同义句） my brother likes swim ,he can swim very well 改错 英语小测题目11.Mary can swim very well.(改为否定句)Mary________ _______ He can swim.改为否定句. He can swim well.（同义句） He ＿＿＿siwm well. He speaks English very well.(改为否定句） She thinks she can swim well 该否定句 goose can swim very well.