the gift of gab ---------- 好口才（非正式）

英文释义
(INFORMAL) The ability to hold lengthy conversations, tell stories, and speak eloquently.

例句
I'm shy and I really don't enjoy talking much, but my brother has the gift of gab and always entertains people with his many fascinating stories.
我腼腆，不喜欢多讲话，但是我兄弟口才好，讲过很多好听的故事，总能带给人们快乐。