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在执行之前
1、before───prep.在……之前，先于；在……面前；面对（法院、法庭或其他官方机关）并受审；（宁愿……）不愿；adv.以前，过去，已经；conj.在……以前；到……为止；以免，不然；（宁可……而）不愿
2、this before───以前这个
3、came before───位于…之前；在…之上；比…重要
4、doing───v.做；干（do的ing形式）；n.活动；所作所为
5、before meals───饭前服
6、goes before───居先；走在前面
7、best before───最佳食用日期；此日期前最佳
8、before that───在那之前
9、before sunrise───日出前
1、She asks your permission before doing anything that interferes with what's yours.───她在做任何干扰你的事情之前都要征得你的同意。
2、She spoke as if she did not want to cause him any more trouble. She said, "If you will just listen to me before doing anything. "───她不想再给他添任何麻烦，她说：“能不能在您采取任何行动前容我说几句话？”
3、Have a bit of a think and work out if you really want to move to Dubai, or retrain as a priest, before doing anything silly.───干蠢事前，先想一想，想清楚自己是否真的想去迪拜，或者重新受训成为牧师。
4、The students were into four groups before doing experiments.───学生们在做实验前分成四组。
5、Given that I'd be gambling my own money, I decided to get some practice before doing it for real.───既然是自己掏腰包来赌，我决定，在真刀ZhenQiang去赌前，先得练习练习。
6、He thinks little before doing.───他做事很少考虑。
7、Make yourself calm down before doing everything, and give yourself a reason to make sure you know why and what exactly you're doing.───做每一件事情前首先让自己冷静，确保自己知道，你要做的是什么和你为什么要做这些。
8、A floating selection must be anchored to a new layer or to the last active layer before doing other operations on the image.───对影像进行任何Cao作前，浮动选择区域必须先固定在新的图层或是最后使用的图层上。
9、But before doing that, what I'd like to do is share my depression about the health care system and the need for this with you.───但在做这个之前，我想要先做的是跟你们分享一下我对于医疗保障XiTong的忧虑，以及我们为什么有必要忧虑。
1、Before doing the final wiring of the LED, it was necessary to hook it up temporarily to find the best focal point.
2、Think twice before doing anything rash.
3、Before doing so, a little will be said of the character of logic and deductive reasoning.
4、But before doing so there are some broader questions to consider.
5、Think twice before doing anything.
6、Always read the README file before doing anything other than unpacking!
7、When throttling back select carburettor heat before doing so.
8、And even before doing this it can examine the firms already registered with it for suitability.
9、What preparation should make before doing gynaecology to check?