翻译一下.英语高手 为什么2个谓语

来源：百度知道 编辑：UC知道 时间：2024/06/25 04:05:34
Prodigious efforts accelerated during two world wars,were required before the technology of primitive rocketry could be translated into the reality of sophisticated astronauts 请问为什么这句话中有两个谓语. 1.were require 2.could be 能给小弟举个类似的句子吗?

这里以before引导的两个句子是对的。
I went to the shop before I went to the school.这里还是有两个谓语啊。两个went。

“were require”是主句谓语；“could be”是before引导的从句的从句谓语。两者不是一个层面上的，后者比前者低一个层面。