Had开头的疑问Hadelectroniccomputersnotbeinginvented,manyproblemsofspaceflightwouldnothavebeensolvednow.为什么Had开头,在这里这句是什么句型?完整意思?

Question

Had 开头的疑问
Had electronic computers not being invented,many problems of space flight would not have been solved now.
为什么Had 开头,在这里这句是什么句型?完整意思?

Answer 1

这里是if引导的条件状语从句,用虚拟语气,但省略了if之后,从句必须用倒装句,完整的句型是
If the electronic computers had not been invented,many problems of space flight would not have been solved now.
假如电脑没有被发明的话,很多太空飞行的问题就不会被解决了.