英语!关于not so as

题目

英语!关于not so as
9.Tom is not ______Jack and Tom
A.the tallest than
B.as tall as
C.tall than
D.so tall as
谁能告诉我为什么只选d,而不选bd!

答案

有not的时候as必须变成so,这是固定用法,需牢记