adj + enough (to do sth)
enough 修饰形容词时必须放在形容词之后，不能说 enough old。
She isn't old enough to vote in this election.
她年龄不够大，不能参加这次选举投票。
足够地；充分地
相当；十分；（用于某些副词后，表示强调）；完全；相当；用于形容词后以表达正程度的轻微增加,有时相当于非常。；用于某些副词后以强调某种特质显著、出乎意料等。
to the necessary degree; sufficiently
口语中也有用 plenty 代替 enough 的说法，属非标准用法。
足够地。
Sufficiently.
完全；相当；用于形容词后以表达正程度的轻微增加,有时相当于非常。
Fully; quite; used after adjectives to express slight augmentation of the positive degree, and sometimes equivalent to very.
用于某些副词后以强调某种特质显著、出乎意料等。
Used after certain adverbs to emphasise that a quality is notable, unexpected, etc.
必要的数量；(‘plenty’为非标准用法)
as much as necessary; ; (`plenty' is nonstandard)
The coffee is cool enough to drink now.
咖啡现在凉得可以喝了。
用法提示：此处 enough 作副词，置于形容词 cool 之后，表示“足够地”。
AI contextual example
She spoke slowly enough for the children to follow.
她说得够慢，孩子们能跟上。
用法提示：此处 enough 作副词，修饰副词 slowly，表示“足够地”。
AI contextual example
I didn't sleep enough last night, so I feel tired today.
我昨晚睡眠不足，所以今天感觉很累。
用法提示：此处 enough 作副词，放在动词 sleep 后，表示“足够地”。
AI contextual example
enough 修饰形容词时必须放在形容词之后，不能说 enough old。
She isn't old enough to vote in this election.
她年龄不够大，不能参加这次选举投票。
enough 直接跟在动词之后，表示“足够地、充分地”。
She doesn't sleep enough, so she's always tired.
她睡眠不足，所以总是很累。
enough 修饰副词时同样放在其后；strangely/oddly/sure enough 等固定说法也属于这种结构。
He didn't run fast enough to catch the train.
他跑得不够快，没赶上火车。
grammar · medium
易错句子The room is enough big for three people.
正确表达The room is big enough for three people.
enough 作副词表示“足够地”时必须放在形容词之后。汉语“够大”的语序是“够＋形容词”，直译过来就容易把 enough 放到形容词前面；英语里固定是“形容词＋enough”，所以要把 big 移到 enough 前面，而不是说 enough big。
grammar · medium
易错句子We don't have enough of time to finish the project.
正确表达We don't have enough time to finish the project.
enough 直接放在名词前表示“足够的（数量）”时不加 of。只有后面接代词或带限定词的名词短语时才用 enough of，如 enough of it、enough of this。汉语“足够的时间”容易让学生以为要加 of，其实直接说 enough time，所以要删去 of。
反义：足够地 → 不足地；表示未达到所需程度
反义：足够地 → 不充分地；表示数量或程度上不够
足够好
This cake is good enough to eat.
这个蛋糕好吃到可以吃。
达到年龄
She is old enough to drive a car.
她年龄足够大，可以开车了。
足够快
He runs fast enough to win the race.
他跑得足够快，能赢得比赛。
相当好；足够好地
I know her well enough to trust her.
我相当了解她，足以信任她。
很快；足够早
We arrived soon enough to get good seats.
我们到得足够早，得到了好座位。
吃够
Did you eat enough at dinner?
你晚餐吃够了吗？
适可而止；够了就是够了
I've been patient with you, but enough is enough.
我一直对你很耐心，但适可而止吧。
受够了；忍无可忍
After working overtime for a month, I've had enough.
连续加班一个月后，我受够了。
说得够多了；不必再说了
He's never on time. Enough said.
他从不守时。不必再说了。
没有哪座山高得足以阻挡我
This iconic lyric from the Motown duet 'Ain't No Mountain High Enough' expresses that no physical barrier is sufficient to stop true love.
这首摩城经典二重唱《Ain't No Mountain High Enough》的歌词表达了没有任何物理障碍能够阻挡真爱。
忍无可忍
The title and chorus of the disco hit 'No More Tears (Enough Is Enough)' assert a point where one's patience is exhausted and change must happen.
迪斯科热门歌曲《No More Tears (Enough Is Enough)》的标题和副歌表明一个人的忍耐已到极限，必须做出改变。
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Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.