enough的位置口诀：修饰名词很自由，可以置前也可后，若是修饰形或副，后置一定要记住。enough可以作名词、代词，意思是"足够；充分"。作代词可以代替可数名词或不可数名词，在句中作主语或宾语。当enough后的名词前有冠词、形容词性物主代词、指示代词或其本身就是代词时，要用介词of。
enough作形容词时，意思是“充足的”、“足够的”，后面常跟for引导的短语或可数名词。
修饰不可数名词或可数名词复数，位置可前可后，例如：
(1)Are there enough seats for four persons?
有没有足够四个人的座位?
(2)We have enough time/time enough to get to the station.
我们有足够的时间赶到车站。
(3) We have enough food for a month.
我们有足够维持一个月的食物。
例如：
(1)Six chairs should be enough.
六把椅子应该足够了。
(2)That’s enough.Thank you.
够了，谢谢。
enough作副词时，意为“充足地”、“足够地”，可用来修饰形容词和副词，且必须放在它们之后，例如：
(1)I was foolish enough to believe her.
我相信了她，真是太傻了。
(2)He knows the situation well enough.
对他情况了解得非常清楚。(不可说enoug hwell)
(3)This room is large enough for us to sleep in.
这个房间足够大，我们可以睡.(不可说enough large)
(4)He has eaten enough.
他已经饱了。(enough还可以修饰副词和动词，但必须后置。)
enough作代词时，意为“足够”、“充足”，充当主语、宾语.当其作主语时，看作单数。例如：
(1)Enough has been said on how to learn English well.
关于如何学好英语已经说得足够多的了。
(2)I have enough to do today.
今天我有足够多的事要做。
enough放在形容词之后，此时，enough修饰形容词时，结构为“adj.+enough+名词”,表示“足够…的…”,如：
(1) a large enough room.一间足够大的房间
(2)a deep enough well.一口足够深的井
1、They had enough cash for a one-way ticket
他们有足够的钱买单程票。
2、I met him only the once, and that was enough
我就见过他那一次，那就让我受够了。
3、Winter is a common enough German surname
温特是一个非常普通的德国姓氏。
4、Strangely enough, the last thing he thought of was his beloved Tanya
说来也怪，他最后想到的才是他心爱的塔尼娅。
5、Stop asking questions! You should know when enough is enough.
别问问题了！你应该知道什么时候该适可而止。