问题补充:
单选题Theaveragetemperaturethisyearis_______thatoflastyear.A.as not high asB.not as highC.not as higher asD.not as high as
答案:
D解析as...as用法:as...as意为和……一样,表示同级的比较。使用时要注意第一个as为副词,第二个as为连词。其基本结构为:as+ adj./ adv. +as。其否定式为not as/so +adj./ adv. +as。故选D.