One possible version:

I am happy to know that you are beginning to learn Chinese. It's true that Chinese is not easy to learn, but there is no need to feel worried. I will give you some advice.

According to some language experts, the first thing for you to do is to understand what kind of learner you are. Some people are "visual learners" and remember best by seeing pictures and visualizing things in their mind; others are "auditory" and are happy to learn by listening; "kinesthetic" learners tend to learn by doing things and experience. Then you should realize what weak language skills you are going to improve. And finally, make a practical plan and carry it on step by step until you succeed.

As far as I am concerned, it's important that you choose a good teacher who knows the difference between the two languages. Most importantly, you should always keep in mind that you must have confidence in yourself. Don't be frightened by the seemingly hard task. Break your main task into smaller goals and you will realize your dream in the end.

Hope you will be getting on better with your Chinese.

Yours,

Li Hua

题目分析：本文是篇材料作文，材料非常简单，学生很容易把握写作要求和写作目的。考生在写作之前必须认真审题，首先要注意文章的要求1．了解Mary在学习汉语方面有哪些具体的困难；2．两条以上的具体建议。要求让你给朋友Mary写信，因此必须要考虑用提建议的句式、短语等。再有应注意准确应用较高级的词汇和语法结构及上、下文的连贯性以提高作文的档次。注意细节如不出现真实姓名、拼写与标点符号、书写等等。另外，注意控制字数在不少于100词。

【亮点说明】该文包含所有的内容要点。同时注意了句子开头的变化。应用了较多的语法结构和词汇。使用了较复杂结构或较高级词汇。 如According to，As far as I am concerned，realize your dream，there is no need to do…, 祈使句，安定一般将来时等等。有效地使用了语句间的连接成分，使全文结构紧凑。如： first, then and finally 等等。