Summertime is the best time of the year. There is no school for months and I get to do what I want. With no tests and no homework, I'm as free as a bird.
夏季是一年中最好的时光。（几个）月不用去学校并且我可以做自己想做的事。没有考试、没有作业，我自由地像只小鸟。

I do many things during the summer vacation. I relax by reading books and watching TV. I also hang out with my friends or travel with my family. However, I don't only play in summer. I take advantage of the free time to learn more. For example, last summer I learned to swim. This summer I might study computers or English. Summer vacation flies by fast, so it's important to do as much as you can.
暑假期间，我可以做很多事。我通过阅读与看电视放松自己。我也常常与朋友一起打发时间或者与家人一起去旅游。可是，暑假期间，我并不只是游玩。我充分利用闲暇时间去学习更多的（知识）。举例来说，去年暑假，我就学习游泳。这个暑假，我可能会学习计算机或英语（知识）。暑期过得很快，所以，对于你而言，应该尽可能做更多的事。