before,after and until 請問係點用??????

BEFORE
prep.
1. 在...以前
Only two days remained before the examination.
考前只剩下兩天了。
2. (指順序,重要性等)在...之前,先於
Your name comes before mine.
你的名字在我之前。
Pride comes before a fall.
驕必敗。
3. 由...考慮中
We will put the matter before the committee.
我們將把此事提交委員會考慮。
4. 在...前面;在...面前
She said she had never spoken before an audience.
她說她從未在大庭廣眾演講過。
5. 被...所迫;迫於
Their troops recoiled before the attack of the enemy.
他們的部隊迫於敵人的進攻而後撤。
ad.
1. 較早
Come at two o'clock, not before.
兩點鐘來,不必再早了。
2. 以前;曾經
He was never late before.
過去他從不遲到。
Have you two met before?
你們兩人以前見過面嗎?
3. 在前;向前
Several soldiers went before to scout.
數名士兵在前面探路。
conj.
1. 在...以前
Check it carefully before you hand it in.
交來之前仔細核對一下。
2. 與其...寧可
I'd die before I'd tell.
我寧死也決不會說出來。
3. 否則,要不然
Get out before I call the police.
滾開,否則我叫警察。

AFTER
after
KK: []
DJ: []
prep.
1. 在...以後
After graduation he went abroad.
畢業後他去了國外。
At half after ten it began to rain.
在十點半下起雨來。
2. 在...後面;隨...之後
After you with the paper, please.
請您看完報紙後給我。
She entered the hall after her mother.
她跟隨在她母親之後進入廳內。
3. 低於;次於
A captain comes after a major.
上尉軍銜低於少校。
4. 鑑於,由於
After what had happened he could not continue to work there.
鑑於所發生的事情,他不可能繼續在那裡工作下去了。
5. 仿照,模仿
This is a painting after Picasso.
這是一幅仿畢卡索的畫。
6. 依照;按照...的名字
The kid was named after his grandfather.
這孩子是以他祖父的名字命名的。
7. 儘管
After all our efforts, the experiment failed.
儘管我們做了努力,試驗還是失敗了。
8. 搜尋,尋找
Mary is after a better job.
瑪麗在尋找一個更好的工作。
conj.
1. 在...之後
I will tell you after they leave.
他們走後我再告訴你。
ad.
1. 以後,之後
They arrived shortly after.
不久以後他們抵達了。
2. 在後面,隨後
Tom went on Monday, and Mary left the day after.
湯姆星期一走的,瑪麗第二天就離開了。
a.[B]
1. 以後的
His health was declining in after years.
在以後的歲月,他的健康不斷衰退。
2. 後部的
A few passengers would have a stroll on the after deck before the evening meal.
幾位乘客將在晚飯前到後甲板上散步。

UNTIL
prep.
1. 直到...時,到...為止
Will this fish keep until tomorrow?
這魚能擱到明天嗎?
2. (用於否定句)在...之前,直到...(才)
She didn't go to bed until eleven o'clock.
她直到十一點才上床睡覺。
conj.
1. 直到...時,到...為止
He worked in Hong Kong until his father found him a job in Canada.
在他父親給他在加拿大找到差事前,他一直在香港工作。
2. (用於否定句)在...以前,直到...才
She didn't go to bed until her daughter came back.
她一直等到女兒回來才去睡覺。