很多结构要求助动词尽量补出,可是我一直没搞明白哪些属于助动词,还有它的补出形式
1、助动词是不是一般有do,be, have/has, will/shall这几种阿?
2、比如,比较结构中要补出do,前半句我们假设动词是pass, 那是补do,还是补pass?
同样,be动词,是补出be呢?还是根据主语补was/were?
很基础的问题,但是一直没弄懂,请帮个忙,谢谢
补个例子,大全763中
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(D)
(E) a significance even greater for the economy than have
C和D的区别是do和have,这道题里选do因为照应前面could have,那有没有have当助动词补出的时候阿?
一直有这么个疑问,望有大侠可以解答
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