Question

这句话中 a people（一个民族）后面为什么要用have, 而不是has?

When a people have ideals, their country will have strength, and their nation will have a bright future.

Answer 1

因为这里的people指的是“民族”的意思，而且指民族里的所有人。你看一下后面用的是their就能够明白了。