▲直接修饰名词,应用 enough(此时的 enough 为形容词或称限定词)。如:
We have enough seats for everyone. 我们有足够的座位让大家都坐。
Make sure you have enough money and petrol. 确保你有足够的钱和汽油。
If I have enough money next year, I will go to Japan. 假若明年我有钱,我就去日本。
Not having enough hands, they couldn’t finish the work in time. 由于人手不足,他们不能及时完成工作。
▲如果所修饰的名词本身带有冠词、物主代词、指示代词等限制词,则要用 enough of。如:
Be sure to eat enough of the right kind of food. 一定要吃足够而合适的食物。
I’ve had enough of your constant chatter. 我已经听够你那没完没了的唠叨话。
Your education is enough of a problem for me. 你的教育问题真够我头痛的了。
They were able to save enough of their furniture to fill a room. 他们能省出的家具足够装满一间屋子。
▲另外,如果是用于人称代词前,也要用 enough of。如:
I hope enough of you are prepared to help with the show. 我希望你们中能有足够的人手准备协助这场演出。
We need signatures and we haven’t got enough of them. 我们需要签名,而现在得到的还不够。
如果是用于名词性从句前也要用enough of。如:
Mrs Thatcher has survived because she has given enough of the voters enough of what they want. 撒切尔夫人走出了困境,因为她给予足够多的选民们想要的一切。
除了lgy789归纳的用法外,还有两点用法:
(1) enough 有时可以放在它所修饰的名词后面,而 enough of 不能放在它所修饰的名词后面。例如:
If only we had time enough... 要是我们有足够的时间就好了...... (《牛津英语用法指南》第三版187.2)
(2) 在 have (has) had enough of 后面可以跟一个不带限定词的名词,即可以直接跟名词。例如:
I've had enough of mathematics; I'm going to give it up. 我已经对数学感到厌烦; 我打算放弃了。
She's had enough of England; she's going back home. 她已经在英格兰待腻了;她要回家了。
(《牛津英语用法指南》第三版187.4)