only when the war was over was he able to get back to work?其中为什么会_英语解答

only when the war was over was he able to get back to work?其中为什么会有was,这是什么语法?
类似的还有：the supervisor could have prevented the accident had he known it beforehand.这里为什么会出现had?

人气：416 ℃　时间：2019-11-09 18:55:17

解答

嗯,楼上的人说的对,第二句就是所谓的部分倒装:在虚拟语气中,若非真实条件句省略if,那么必须将主句中的were或had或should等助动词和主语位置颠倒形成的部分倒装.当然这一句中的if意为如果.你只要记住看见助动词提前,...