I think you'd better think it over before doing it.
我想你在做这件事之前最好想清楚。
Before doing this questionnaire, do you think you have a good quality of sleep?
你接受问卷调查前，你觉得自己拥有一个好质素的睡眠吗？
My idea is that we (should) think it over before doing.
我的观念就是在做之前我们要好好思考一下。
Think twice before doing anything.
在做任何东西之前慎重考虑。
These are the four things you should think about doing before you die.
这是四件您在死前应该考虑做的事情。
I think you should think it over before doing it.
我认为你应该三思而后行。
I advise you to think twice before doing that.
这件事你做了两次还是三次。
You may really want to think twice before doing this.
你也真的想这样做之前三思。
Before doing anything, you should use your brain to think carefully.
在做任何事前，都要经过大脑思考。
Before doing anything, you should use your brain to think carefully.
在做任何事前，都要经过大脑思考。
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