形容词和副词常可译为“……的/地”，尤其在那些同义的形容词和副词中要区分他们的不同时，语意更易引起混乱；而由它们衍生出来的比较等级及其用法就更是英语学习中的难点之一了。考查该要点涉及到的题型也是多种多样的，单选、完形、阅读理解、改错、作文中都可见到它们的身影。
●难点磁场
1.(★★★★)The horse is getting old and can not run________ it did.
A.as faster as B.so fast than
C.so faster as D.as fast as
2.(★★★★★)Greenland,________ island in the world,covers over two million square kilometres.
A.it is the largest B.that is the largest
C.is the largest D.the largest
