He has the ability to speak multiple languages.

He is an amazing polyglot who can speak five languages fluently.

I'm always amazed at her fluency in Japanese.

His Japanese is fluent.

He is a very charismatic speaker.

I was really astonished by his sudden proposal.

I was taken aback by his sudden proposal.

Lo and behold, he passed the exam.

He talked about his trip.

I like talking with him.