I only speak a few words of Chinese.

我只会说几个汉语词。

A  Do you speak Chinese?

A  你说汉语吗?

B  I only speak a few words, unfortunately. I need to learn more.

B  遗憾的是，我只会说几个汉语词，我需要学习说得更多。

A  Yes, it’s good to learn, but I know it’s difficult for you.

A  是的，学习很有好处，但是我知道对你很难。

B  It’s difficult, but not impossible!

B  是很难，但是不是不可能的！!

Learning and speaking a language is difficult. There are a variety of ways of expressing this.

学习讲一门语言是很难的。有不同的方法可以表达这个思想。