高三英语语法知识点2020精选【5篇】 高三英语语法知识点1 重点句型 It was + 时间段+before...."过了多久才(怎么样)......" It was not long before...."不久,就......" It will (not) be +时间段+before...."要过多久(不久)......才......"(before从句谓语动词要用一般时态) [例句] It was not long before he sensed the danger of the position.不久他就意识到他处境的危险。 It was five days before he came back. 五天