作为练习，在阅读下一段之前请试着解释一下原因。
As an exercise, try to explain why before reading the next paragraph.
在你确定课程之前，先完成这个活页练习题。
Complete this worksheet before you decide on the model you want.
如果这些文件已经存在，在您继续这个练习之前请进行备份。
If these files already exist, make backups before you continue with this exercise.
在今天下午的排位赛之前上午还会有一小时的自由练习时间.
There will be an hour of free practice this morning before qualifying in the afternoon.
在开始之前一定要做演讲练习。
我们在做快速阅读练习之前没有必要把阅读材料先看过了。
We needn't have read the Fast Reading materials before we do it in class.
我们在做快速阅读练习之前没有必要把阅读材料先看过了。
We needn’t have read the Fast Reading materials before we do it in class .
在你准备演讲之前等待的时候，可以尝试做以下几个小练习。
While you wait to give your speech, do these simple exercises.
在事件之前就要练习你要说的这些话。
在阅读我的下一篇文章之前最好自行练习实践。
The best thing to do before reading my next article is practice.
可就象任何事情一样，在说好它之前你需要大量的练习。
But like anything else, you really need to practice and practice before you can do it well.
在你坐下来静心练习之前，一定要确保远离所有潜在性的干扰。
Before you sit down to practice, make sure whatever potential distractions are far from sight.
事实上，在那天之前我已经练习了好几天了。
在枕头底下放一本书以便提醒自己每天早晨起床和晚上睡觉之前的第一件就是练习。
Keep a book under your pillow to remind yourself to practice first thing in the morning and before you go to sleep at night.
在做这个练习之前，你必须记住如下一些预防措施。
我应该在11：00之前做完所有的练习吗？
在旅游之前我要练习一下我的法语。
之前有做过练习吗？
在开始每项练习之前，要细读这些指令。它们很重要，每次开始新课前都要读读指令。
Before you begin each exercise, read these instructions carefully. Read them each time you begin a new piece. They are very important.
明早在其他人来之前先到这里，我们来练习一下。
Come in early tomorrow morning, before the others get here and we'll practise.
英语晚会之前他反复练习唱那首歌。
He practised the song again and again before the English party.
练习之前请不要化妆，因为流汗会使毛孔阻塞。
Please do not make-up before the practice, because sweat will block pores.
在电视问答比赛节目开始之前，为参赛者做了准备性的练习。
Before the television quiz program there was a warm-up to prepare the contestant.
我们在做快速阅读练习之前没有必要把阅读材料先看过了。
We need not have read the Fast Reading materials before we do it in class.
而且要保证在下一次练习之前使身体完全恢复。
And make sure you give yourself enough recovery time in between hard workouts.
你或许可以在手指刚刚“变冷”之前做拉伸练习。
You might perform these stretching exercises just before "playing cold".
在电视问答比赛节目开始之前，为参赛者做了准备性的练习。
Before the television quiz program, there was a warm - up to prepare the contestant.
好，在我们开始之前，大家对练习有什么疑问吗？
OK. Before we get started, what questions do you have about the exercise?
好，在我们开始之前，大家对练习有什么疑问吗？
OK. Before we get started, what questions do you have about the exercise?
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