你如果现在不买，你会错失良机的。

If you don't buy now, you may find that you've missed the boat.

《牛津词典》

你如果现在走就可以避开人群。

If you go now you should miss the crowds.

《牛津词典》

如果你现在取消，就会破坏我所有的安排。

If you cancel now you'll mess up all my arrangements.

《牛津词典》

Now if they had taken another set of 446 anorexics, and again June was the month, then there would be some credibility in it.

现在如果他们选择另一组446位女性，然后同样做出六月的结论，这样可能就更可信了。

麻省理工公开课 - 计算机科学及编程导论课程节选

If you don't know why you're about to eat cake like that you will soon, but you know this.

如果你现在还不知道为什么将要吃到那样的蛋糕,很快就会知道的，你清楚这一点。

哈佛公开课 - 计算机科学课程节选

Now, if this incident energy is great enough it will take an electron out of the ground state and promote it.

现在，如果入射能足够的话,它会将一个电子从基态中释放出来,并且加速它。

麻省理工公开课 - 固态化学导论课程节选