一道语法题,希望说出选正确答案的原因和不选其它答案的理由.

问题描述:

一道语法题,希望说出选正确答案的原因和不选其它答案的理由.
To handle the delicate situation,you must be____________
A) more than careful
B) more carefully
C) carefully enough
D) enough carefully

答案是A:To handle the delicate situation,you must be more than careful.为了对付这微妙的局势,你必须非常小心.用形容词careful 作表语,carefully是方式副词,不可以作表语.
more than = extremely
《牛津高阶英汉双解词典》more:
I‘m more than happy ( = extremely happy).