two weeks/three days/a few hours beforehand
提前两星期 / 三天 / 几小时
牛津词典
I wish we'd known about it beforehand.
要是我们预先知道这事就好了。
牛津词典
How could she tell beforehand that I was going to go out?...
她怎么会事先知道我要出去？
Saunas can be hazardous if misused. Avoid a big meal beforehand.
洗桑拿浴如果方法不当会有危险，浴前切忌饱食。
He rehearsed the interview in his mind beforehand.
他把面试时要说的话预先想好了.
辞典例句
They proposed to make arrangement beforehand.
他们提议事先做好安排.
《简明英汉词典》
If I'd known this beforehand, I would not have gone back.
早知如此, 我就不回去了.
《现代汉英综合大词典》
If you want me to put your case forcibly, you must brief me thoroughly beforehand.
要是你想让我把你的案子处理得有说服力, 你先得原原本本地向我介绍情况.
《现代汉英综合大词典》
He was informed beforehand.
他预先得到通知.
《现代英汉综合大词典》
Moves out after since Professor Wang from beforehand dwelling, I have not seen him.
自从王教授从以前的住处搬走以后, 我一直没看见过他.
期刊摘选
Never tell your resolution beforehand.
千万不要预先说出你的决心.
期刊摘选
How can we make the planning beforehand?
有甚麽方法才能未雨绸缪?
期刊摘选
Don't be beforehand in making up your mind.
不要过早作决定.
《现代英汉综合大词典》
Mt . 24:25 Behold, I have told you beforehand.
太 二四 25看哪, 我预先告诉你们了.
期刊摘选
We had to get these animals over beforehand.
我们得先把这些牲畜赶过去.
《简明英汉词典》
They according to will design the good respective track to move beforehand in the outer space.
它们将按事先设计好的各自的轨道在太空中运行.
期刊摘选
EEPROM was programmed with temperature calibration beforehand.
EEPROM是事先与温度校准.
期刊摘选
We congratulate you beforehand on your success.
我们预祝你事业成功.
《现代汉英综合大词典》
Please inform me of your arrival time beforehand.
请事先通知我你抵达的时间.
《简明英汉词典》
He was ever a little beforehand and never lived precariously.
他的收入一向稍多于开支,而从未过拮据的生活.
《现代英汉综合大词典》
I'm always beforehand with the rent.
我总是提前付房租.
《简明英汉词典》
Get everything ready beforehand.
事先准备好一切.
《现代英汉综合大词典》
He has been beforehand with me.
他赶在我前面了.
《现代英汉综合大词典》
Have you warned beforehand?
事先打招呼了 吗 ?
《现代汉英综合大词典》
It had been arranged beforehand.
一切都事先料理好了.
《现代汉英综合大词典》
She is always beforehand with the rent.
她总是提前付房租.
《现代英汉综合大词典》
It is reasonable to assume that he knew beforehand that this would happen.
有理由认为他事先就知道会发生这样的事。
《牛津高阶英汉双解词典》
How could she tell beforehand that I was going to go out?
她怎么会事先知道我要出去？
柯林斯例句
You must have some preparation beforehand.
2016年6月六级真题（第一套）听力 Section A"gave advance warning"
"was beforehand with her report"
"when you pay ahead (or in advance) you receive a discount"
"We like to plan ahead"
"should have made reservations beforehand"
