Mike is Li Nan's pen friend. He is a Canadian as old as Li Nan. Yesterday Li Nan received a letter from Mike and he knew Mike was learning Chinese. He said that he had some trouble in the grammar and asked Li Nan for help. He told Li Nan that he was going to visit China and meet him in Beijing this summer. Li Nan was very happy to hear that. They can have a good time.They can help each other in learning language. 迈克是李南的笔友。他是一个和李南一样大的加拿大人。昨天李南收到了他的信，得知他正在学习中文。他说他有些语法问题弄不懂，想要得到李南的帮助，他还告诉李南今年夏天来中国参观井看望李南。听到这个消息，李南非常高兴。他们会过得很愉快，在学习语言上他们可以互相帮助。 Yesterday Li Nan heard from his pen friend, Mike. He is a Canadian and he is as old as Li Nan. Mike is interested in China and things related to China. So he is learning Chinese. He will visit China soon. From his letter Li Nan knew that he had some trouble in the grammar. It is difficult for a foreigner to learn Chinese as it is difficult for Chinese students to study English well. He needs Li Nan's help. Li Nan hopes he can come to China soon. Then he can help Mike learn Chinese and Mike can help him with his English. 李南收到了笔友迈克的来信。他是加拿大人，和李南一样大。迈克对中国和中国的事情很感兴趣，所以他正在学习中文。他不久就会来中国旅游。从他的信中李南知道他遇到一些语法问题。对于一个外国人来说学习中文是件不容易的事，正如中国学生要想学好英语也不容易。他需要李南的帮助。 李南希望他很快就能来中国。那么他可以帮助迈克学习中文，而迈克也可以帮助他学习英语。