teach三单形式为teaches，ing形式为teaching
例句
1.
Teach them to voice their feelings.
训练他们敢于表达自己的感受。
2.
One Sunday he began trying to teach the two puppies to walk on a leash.
一个星期天，他开始尝试训练两只小狗系上皮带走路。
3.
Wittgenstein also liked to talk about learning and teaching.
维特根斯坦也喜欢谈论学习和训练
