teach的ing形式为teaching，三单形式为teaches

例句

1.

Children must be taught the difference between right and wrong.

必须教儿童分清是非。

2、

I hope we have taught our children to know right from wrong.

我希望我们教给了孩子分辨是非的能力。

3、

Could you teach me to do that?

你能教我干那活儿吗