how "I can help you with your english" in Japanese
I want to help my friend with his english but I'm not sure how to say it in Japanese Thank you in advance for the help

Question

Answer

もしよかったら、英語の勉強手伝うよ。
I can help your English learning if you want.

もしよかったら、英語教えてあげるよ
I can teach you English if you want.

とかどうでしょう？

Answer

おたがいの言葉を学びあう友人がいて、良いですね。
u r lucky to have a friend of mine to learn their second language each other.

あなたと私で、英語と日本語を教えあいませんか？　・・というのはいかが？
Shall we learn  native language each other ?