外研版高中英语,必修3,module4课件
2. They are often so thick that you cannot see the sun, and the wind is sometimes strong enough to move sand dunes.沙尘暴经常是非常混浊的以至于你看不见太阳， 而且风有时大得能够刮动沙丘。 so...that通常引导结果状语从句，意为“如此……以至 于……”。常用句型如下：
so+adv.(adj.)+thatclause so+adj.+a (an)+单数名词+thatclause clause so many (few)+可数名词复数+that clause so much (little)+不可数名词+that (但little意为 “小的”,只能用such。)