句法知识很棒,若增加一些从句的使用,文章会更出色;希望作者可以加强词汇表达多样性,尤其是高级词汇的积累;文中衔接词丰富。
Beijing is the capital of China. It's modern and beautiful. When you were traveling in Beijing, you will see museums, parks and shopping centers everywhere. Wherever you go, you can see green trees, grass and beautiful flowers. There are a lot of highways and overhead walkways, too. And there are a lot of buses, which burns cleaner fuel, such as CNG or LPG. So the air in Beijing is cleaner than ever before.