GMAT语法常见比较

OG 198

198. Although Napoleon’s army entered Russia with far more supplies than they had in their previous campaigns, it had provisions for only twenty-four days.

(A) they had in their previous campaigns

(B) their previous campaigns had had

(C) they had for any previous campaign

(D) in their previous campaigns (E)

(E) for any previous campaign

同一army 的两件事情比较，than以后的部分可以省略主语及谓语

AC的谓语动词had补错, 应该是had had.

92. Never before had taxpayers confronted so many changes at once as they had in the Tax Reform Act of 1986.

(A) so many changes at once as they had in

(B) at once as many changes as

(C) at once as many changes that there were with

(D) as many changes at once as they confronted in(D)

(E) so many changes at once that confronted them in

同样一群taxpayers前后发生的事情比较，却在than后补出了主语及谓语. D的confronted补的完全正确, A中的had就是错的。另外，D中代词用了they, 而不是that/those，因为是自己与自己比。that/those指代同类事物，而不是同一样事物。

结论：同一主语之间(自己与自己)比较，可以省略主语(因为是自己比自己)及谓语，并且只有当主句也用助动词,且比较从句的助动词与主句一致时,才可省略动词只保留助动词. 这里特别要考虑时态问题，如过去完成时与过去时比较，若补出谓语动词，助动词或动词的选择要根据时态来定。若是不省略主语，代词一般用they/it.