Hey Linda! Very nice story! Here are some corrections
Learn Swimming
I went swimming last night. This was my first time swimming. Before this, I couldn't swim at all. When I first went into the water, I was very afraid. My friend taught me how to exhale then how to dive down into the water. I learned by repepition. After two hours, I can swim a little.
I hope that helps! 我希望这个会帮助你。如果你有问题,可以问问我!