应该说，第二句的格式较其他几句更优，但词语使用不是很妥当。可以这么说：My english is so poor that I'd rather seek for some german friends who works well in chinese to improve together.还有就是德国人好像不大说英文的，楼主要提高英语水平为什么要找德国人呢？而且一找就是“some”？不过还是希望以上对楼主有帮助哈～
My English is very poor, so I'd like to make friends with some Germans who can speak Chinese as well. 不要用so that 结构，这不是很清楚的因果关系，如果用了那不是说你的功利心太明显？也不要用wanna，那是俚语，摆不上台面，只用跟熟人才用。
我个人认为是2...《My english is so poor that i wanna know some Germany friends who know Chinese too.》3my english is so poor that I want to make some Germany friends who know Chinese well to help me
