[解析]
This is Li Xia.I learned from your post that you wanted to improve your Mandarin.I am quite interested in it.I think I'm fit for it.As a student,I have been learned Mandarin for many years.In addition,I am Chinese,which means Mandarin is ∧must for me to communicate with others in my daily life.So I'm quite confident that I can help you learn Mandarin.
Learning Mandarin takes time, but if you want to learn it well,you should spend much time practicing Mandarin every day.As the saying goes,practice makes perfect. Beside,you can also read some books in Chinese,see some Chinese films and listen to some Chinese radio programme.Speaking and listening is very important for language learning, of which you are sure to make great progress.
In your post,you say you can teach English as a reward.It is just what I want to.I'm eager to improve my English.So,if you allow me to help you learn Mandarin,you could also help me improve my English.We can contact each other by video chat every night for half an hour in English and half an hour in Chinese,so that we can improve my oral speaking.
Hope for your early reply!
1.learned﹣learning 考查时态.for many years连续好多年,句子时态需用现在完成进行时,即have been learning.
2.must前面加a 考查冠词.根据句意可知must作"必需品"是可数名词,故加冠词a.
3.but﹣so/and 考查连接词.根据上下句衔接可知,and连接两个并列句.
4.Beside﹣Besides 考查介词.besides是介词,除此之外.
5.programme﹣programmes 考查名词.some Chinese programs"一些中国电视节目",其中program是可数名词.
6.is﹣are 考查主谓一致.speaking and listening是两件事情做句子主语,故谓语需要复数are.
7.of﹣by 考查介词.根据句意可知,通过speaking and listening你可以取得进步,by意思是通过…方式.
8.want后面的to去掉 want做动词是想要,可以当一个及物动词,what做宾语,故去掉to.
9.could﹣can 考查时态.根据文章可知,叙述一般现在的事情,故需一般现在时.
10.my﹣our 考查物主代词.根据文章内容可知,我们互相帮助学习对方的语言,故my改为our.