If you're talking about the language:
* "我不感兴趣学中文。" (Wǒ bù gǎn xìng qù xué zhōngwén.) This translates to "I'm not interested in learning Chinese."
* "我对中文没有兴趣。" (Wǒ duì zhōngwén méiyǒu xìngqù.) This is another way to say "I'm not interested in Chinese" as a language.
If you're talking about Chinese culture:
* "我对中国文化没有兴趣。" (Wǒ duì zhōngguó wénhuà méiyǒu xìngqù.) This means "I'm not interested in Chinese culture."
* "我对中国不太感兴趣。" (Wǒ duì zhōngguó bù tài gǎn xìng qù.) This translates to "I'm not very interested in China."
If you're declining an offer:
* "谢谢，我不想学中文。" (Xièxie, wǒ bù xiǎng xué zhōngwén.) This means "Thank you, I don't want to learn Chinese."
Remember:
* The best way to express yourself depends on the specific situation and who you are talking to.
* It's important to be polite and respectful when expressing your lack of interest.
* If you want to be more specific, you could explain why you're not interested.
Let me know if you want me to provide a more specific example, and I'd be happy to help!