I do not swim so often as I used to.

我不像过去那样常游泳了。

youdao

I do not yet know how to swim breaststroke effectively.

我还不知道如何有效地进行蛙泳。

《柯林斯英汉双解大词典》

Explaining what was so remarkable about that moment, the notes say: 'My astonishment is not in the fact that she could swim across the pool because I always knew she could do it.

他是在记录中这样解释这样非凡的时刻：“我不吃惊她能穿过泳池游到另一边，因为我一直都知道她可以。”

youdao

Correct, I do not know how to swim.

MSN: What you sign away when you book a cruise