Informal:
* I speak a little Chinese.
* My Chinese is not very good.
* I can speak a bit of Chinese.
* I know some Chinese.
More formal:
* My Chinese language skills are limited.
* I have a basic understanding of Chinese.
* I am still learning Chinese.
In Chinese:
* 我中文说得不好 (Wǒ zhōngwén shuō de bù hǎo): This literally means "My Chinese is not good," and it is a common way to express that you speak little Chinese.
Tips for communicating:
* Be honest about your language skills. It's better to admit you're a beginner than to try to pretend you're fluent.
* Use simple language and phrases.
* Use gestures and body language to help you communicate.
* Be patient and understanding. People will appreciate your effort to learn their language.
It's also helpful to mention how long you've been learning Chinese. For example, you could say "I've been learning Chinese for a few months" or "I'm still a beginner."