装系统总是还原c失败:帮我找出文章语病。（找出全部正确再赏20分！！）

Thank you for your big present , I like it very much . ——中间应该用句号，因为两个独立的句子（既有两个主语和两个谓语）不能存在于一个句子中，若想要用逗号的话也可以在 I 前面加一个 and 。你的后面还有些这个问题的句子我就不说了。
You said that you want to go to WenZhou to see me ,so I'll tell you the weather in WenZhou . ——事态要统一，既然你在 You said 中已用了过去时，则在这一整个句子甚至一整篇文章中都应该与过去时相对应。同时，对方是过来看你，你应用 come 而不应用 go 。以及你告诉他 WenZhou 的天气与他要来看你在英语上并没有绝对的因果关系，不提倡用 so 。
In autumn , the sky is blue and the could fly on the sky.——你的云朵拼错了吧？是不是应该是 cloud ？然后云朵应该没特指是哪一篇吧？也不止一片吧？
It is the best season to travel 、to go boating and climbing .——英语中没有顿号，应该使用逗号。
Most of young people like these festival and they always hold some wonderful party for it. —— festival 和 party 均应用复数形式。
最后，注意写信的格式。

这样，你的文章修改后为——

Dear Jim:
Thank you for your big present. I like it very much. You said that you wanted to come to WenZhou to see me. Now let me tell you the weather in WenZhou.
In spring, the weather is warm. The flowers and the trees are growing up, and people always fly kites in this season .
In summer, it is not too hot and everyone likes swimming in the river —— it's so cool!
In autumn, the sky is blue and clouds fly on the sky. It is the best season to travel, to go boating and climbing. So you can come in this season.
In winter, it is not too cold and there is a little snow in this season. During the winter, there are two festivals —— the Christmas Day and the Spring Festival. Most of young people like these festivals and they always hold some wonderful parties for them.
The people in WenZhou are very warm-hearted and they work very hard. They often say "Welcome to WenZhou!" as soon as you step in here.

Yours
Yang
05.12.06