if need(s) be

We use this phrase to talk about something that might be necessary in the future.

我们用这个短语来说将来可能需要的情况

(英国英语中亦作 if needs be)

If need be, I can bring some extra chairs from home so everyone has a place to sit.

如果需要的话，我可以从家里多带几把椅子，这样每个人就都有地方坐了。

A: Have you finished your speech for the wedding tomorrow?

你准备好你明天婚礼的发言了么?

B: No, but I'll work on it all night, if needs be.

没有，但是如果需要的话，我今天晚上就通宵弄完它。