As the summer vacation comes, I decide to learn swimming, because the weather is so hot, I can make myself cool, what’s more, I want to master another skill and protect myself.

As the summer vacation comes, I decide to learn swimming, because the weather is so hot, I can make myself cool, what’s more, I want to master another skill and protect myself. Many people lose their lives when they meet the accident in the water, so it is important to learn swimming. I have made up my mind and must finish this task. 
暑假来了,我决定学习游泳,因为天气太热了,我可以让自己感到清凉点,更重要的是,我想掌握一门技能和保护自己。许多人失去生命，当他们遇到发生在水里的事故,所以学习游泳是很重要的。我已经下定决心,必须完成这一任务。