如果我没有该怎么办？

What shall we do if I haven't any?

youdao

如果我有疑问怎么办？

What if I have questions?

youdao

如果这行不通怎么办呢？

What if this doesn't work out?

《柯林斯英汉双解大词典》

What was the key step that I said I needed to do on Friday but failed very publicly to do so?

至关重要的一步，我将在本周五跟大家细细道来,如果我很嚣张地失败了怎么办？

哈佛公开课 - 计算机科学课程节选

So one case to think about is what if the other firm, you're Coke, what if Pepsi is pricing below cost?

一种情况是如果另一家公司,假如说你是可口可乐,如果百事可乐定价低于成本怎么办

耶鲁公开课 - 博弈论课程节选

What if last night God destroyed my soul and put in a new soul?

如果昨晚上帝毁掉了我的灵魂并创造了新的那怎么办？

耶鲁公开课 - 死亡课程节选