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You can swim well, can you?

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You can swim well, can't you?

CB

Comments  

It is correct as it stands. It is a challenging retort to someone who, for example, has claimed they could swim well but just almost drowned in the kiddie pool. If you want it to be a question expressing hope that the other person can swim well, it should be "You can swim well, can't you?" If you want it to be a question expressing disappointment at the other person's poor swimming, it should be "You can't swim well, can you?"

 Cool Breeze's reply was promoted to an answer.