teaching是可数名词

不是可数名词。

n. 教学；教义

v. 教学；教导（teach的ing形式）

He's not cut out for teaching.

他不适于做教学工作。

Teaching is by lectures and seminars.

教学形式为讲座和研讨课。

She gave up teaching three years ago.

三年前，她放弃了教学工作。

The calibre of teaching was very high.

教学质量非常高。

He was put off science by bad teaching.

教学不好使他失去了对理科的兴趣。