你的作文写得非常的流利,几乎没有语病.下面的文章我吹毛求疵帮你修改了下,
I am very glad to participate in the English Summer Camp held from 10th to 12th August.As I will have a visit to Beijing,I may only join after 15th August.Among the activities,such as English Corner,learning English songs,English lectures,performing English plays,watching
English movies and teaching foreigners Chinese etc .I think I am interested in English Corner and teaching Chinese,for I would like to improve my oral English from communicating with foreigners in English Corner and teaching them Chinese is a quite meaningful job I think,for many foreigners will be more and more interested in China through the Olympic Games,so I feel proud to bridge China with the world to let everyone know more about our country.