What if the grandfather should hear about it!

如果爷爷知道了该怎么办！

youdao

What if the train is late?

火车要是晚点会怎么样呢？

《牛津词典》

What if the parachute doesn't open?

降落伞打不开怎么办？

《牛津词典》

What if the fetus is found severely affected by a faulty gene?

VOA: special.2010.03.23

One of the perhaps easiest ones to put your finger on is what if the computer is out of memory?

一个可能的情况是,计算机的内存不足？

哈佛公开课 - 计算机科学课程节选

because then you can solve new problems on midterms and what not if you understand the conceptual part.

因为这样你可以解决中期的新的问题，如果你不理解的话，就不好说了。

我的梦想是百万富翁 - SpeakingMax英语口语达人

What if the IPO market stays cold, as it did from 1974 to 1980?

FORBES: Magazine Article

But what if the cumulative lack of rigor, of critical self-deprecation, turns into systemic publication bias?

FORBES: The Wrongs Of Righteous Research

What if the country collectively shrugs, loses interest in politics, and goes on with life?

WSJ: Best of the Web Today: A Crisis of Authority