When I was very young ,the sky in my hometown was nice and beautiful, the sky was very blue,and the air was fresh. There were some birds singing ,and there were many trees in the fields. I often played with my friends in the open air.I liked it.

Now the people are rich ,but the sky in my hometown isn't blue .the trees were cut down , and there aren't many birds. And the air isn't fresher than before. The rubbish is put here and there, it was bad for our health.So we must do something to protect the environment. If we make a contribution to protecting the environment,the sky will become much more beautiful.

参考译文

当我还小的时候，我家乡的天空很美，很蓝，空气很清新，这里有很的鸟在唱歌，在地里有许多树，我经常和我的朋友们在这里玩，我喜欢这里。

在我的家乡，现在人们富裕了，但是天空不蓝了。树被掉了，这儿再也没有许多的鸟，空气也不在那么清新。垃圾被扔在这里，他让我们的健康变坏，所以我们必须做一些事情来保护我们的环境，如果我们每个人都做一点贡献来保护环境，天空会更美丽。

词语解析：

1.fresher 新鲜，鲜
2.beautiful 美丽的，美好的；
3.rubbish 垃圾；碎屑；废物；
4.environment 环境

词组解析：

1.in the open air 在户外,在野外
2.play with 同…一起玩；