1.可以作形容词,意思是：充足的,足够的.它可以修饰可数名词,也可以修饰不可数名词,修饰名词时,可以放在名词前,也可以放在名词后.例如：
enough apples=apples enough
We don't have enough time(time enough).我们没有足够的时间.
There is enough foot for eight people.食物够八个人吃
2.可以作副词,意识是：够,足够.它修饰形容词时,要放在形容词后.例如：
It is light enough for reading.天亮了可以足够读书了.