teach 是动词.是表示动作.teacher 是名词.就是表示老师的意思.teaching是动名词.
teacher
n.教师;教员;老师;先生
复数： teachers；
teaching
n.教学;授课;指导;教导;学说;教义;教诲
复数： teachings
How well does the teacher structure the lessons?
老师对课程组织安排得如何？
The teacher assigned a different task to each of the children.
老师给每个儿童布置的作业都不相同。
Patience is one of the most important attributes in a teacher.
耐心是教师最重要的品质之一。
We only learned who the new teacher was a few days ago.
我们几天前才得知新教师是谁。
The fashion at the time was for teaching mainly the written language.
那时教学时兴的主要是书面语。
She gave up teaching three years ago.
三年前，她放弃了教学工作。
He's not cut out for teaching.
他不适于做教学工作。
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