above和over的区别并且below和under的区别可以快点吗？急急急

above和over的区别并且below和under的区别
可以快点吗？急急急

above 意为在上方的任意一点,反义词为below.比如,The plane flew over above the clouds.
over意为在正下方,反义词为under.比如,There is a bridge over the river.