He ()(not teach)us English in our school.

问题描述:

He ()(not teach)us English in our school.

doesn't teach
谓语动词一般现在时,he做主语用作第三人称单数,所以添加助动词does,又因为是否定句,所以变为doesn't,助动词随时态及人称变化而变化,后跟动词原型,既为teach.