1. My friend Mike is a true English enthusiast who always has a wealth of idiomatic expressions at his fingertips.
2. Mike has an impressive command of the English language, often using complex sentence structures with ease.
3. He's a great conversationalist; Mike always makes our conversations in English lively and engaging.
4. Mike's pronunciation is top-notch, making it a joy to listen to him speak English.
5. I often seek Mike's help with tricky grammar questions, as he has a knack for explaining it in a simple and understandable way.