我是一个有21年经验的教师。

I'm a teacher with 21 years' experience.

《柯林斯英汉双解大词典》

我是一名汉语教师。

I am a Chinese teacher.

youdao

我父亲是一位中学教师。

My father is a middle school teacher.

youdao

Before that, he was a child prodigy She was a music teacher, and probably a concert pianist. But I don't think she had a great career.

在这之前，他是一个神童,她是一个音乐教师，也可能,是一个音乐会钢琴家，但我不认为,她有个这么好的职业。

麻省理工公开课 - 电影哲学课程节选

Okay, I'm an English teacher, but I'm in English Literature, more than English as a language.

我是一名英语教师，但是我教英语文学，多于英语语言的教学。

在公园相遇的老师 - SpeakingMax英语口语达人