When somebody travels with me, they have to teach me a topic.
当有人和我一起旅行的时候，他们必须教我一个话题。
It is time for somebody to teach you to behave yourself.
该是有人教你礼貌点的时分了。
Somebody bought the grandma her first ever digital camera as X 'mas present, but forgot to teach her how to use it.
有人给奶奶买了一台数码相机作为圣诞礼物，但却忘了教她如何使用。