再问新东方补充教材一道语法题

gustavUID: 2112952

6. The guiding principles of the tax plan released by
the Treasury Department could have （even a greater
significance for the economy than） the particulars of
the plan.

(A) even a greater significance for the economy than
(B) a significance that is even greater for
the economy than
(C) even greater significance for the economy
than have
(D) even greater significance for the economy
than do
(E) a significance even greater for the economy
than have

答案是D，想问than后面助动词补出为什么不是could或者是have，而是do?

[ Last edited by gustav on 2005-12-29 at 17:23 ]

stephanie_sisuUID: 201114

could have (done) sth.是一种虚拟语气，表示“原本可以……”，因此是对现在情况的取反，所以是用do，表示现在实际的情况

toeflgirl1984UID: 210452

Stephanie......这里没有could have done结构啊~
这个HAVE在have significance里是实意动词,不是助动词,不能补出~

melancholiaUID: 2149484

我觉得这句话应该是：
The guiding principles of the tax plan released by the Treasury Department could have even  greater for the economy than the particulars of the plan do.

DajUID: 18915

agree with upstairs

stephanie_sisu 说的对，前面是虚拟语气

真生UID: 161074

have....的否定疑问句都是用do来，所以than后面跟的是do　（我的笨办法）

这种题真是要让人发疯