区别：老师教学生，更侧重于教育和知识传授。
She teaches at our local school.
Could you teach me to do that?
teach
instruct/ɪnˈstrʌkt/ v 指示，指导；传授记忆：in-里面，struct-结构。侧重于指导和命令。
instruction/ɪnˈstrʌkʃn/ n 指导
instructor/ɪnˈstrʌktə(r)/ n 指导员，导师，讲师，教练。（助手是：assistant 助理。as-去，sist-stand，站在旁边的人）
The letter instructed him to report to headquarters immediately.（immediately，im=no，med-中间，中介：没有了中间环节。就是直接地，立刻的）
All our staff have been instructed in sign language.全体员工必须要接受手语训练。
Please instruct me on how to operate this machine.
The teacher instructed the students to complete the homework.（complete：com-；ple-折叠。所有事情都完成了打包走人。v 完成 a完全的，彻底的）
instruct
preach/priːtʃ/ v 宣传；布道记忆：传教士布道，都是再讲台上，动不动就将：信徒们，怎么怎么样。手往前伸展，联想道P。
区别：布道，和宗教相关。
She preached to the congregation about forgiveness.她向会众宣讲宽恕的道理。（congregation-》congress：con-一块，-gress-走，走到一块来开会：国会，代表大会。延伸 gation就成了教众）
to preach the word of God。传布上帝的道
preach
