teach sb to do sth 的基本用法 “教某人做某事”，如：
He promised to teach her to water-ski、 他答应教她滑水。
You can teach some parrots to talk、 可以教某些鹦鹉说话。
We should teach the children to know good from bad、
我们应教育儿童分辨是非。
Parents ought to teach their children to behave themselves、
父母应教导子女举止得体。
He taught me to obey all mands without asking questions、
他教我毫无疑义地服从命令。