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题库 / OG2017V-SC-203
A March 2000 Census Bureau survey showed that Mexico accounted for more than a quarter of all foreign-born residents of the United States, the largest share for any country to contribute since 1890, when about 30 percent of the country's foreign-born population was from Germany.
the largest share for any country to contribute
the largest share that any country has contributed
which makes it the largest share for any country to contribute
having the largest share to be contributed by any country
having the largest share to have been contributed by any country
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since要带完成时
to express the comparison. Depending on when the sentence
was written and what the writer intended to express, the verb
form could be either had contributed or has contributed. The
use of has contributed implies that, from the perspective of
the sentence, the comparison between German-born U.S.
residents and those from other countries still holds true.
②since一定得加完成时态（要从全局出发把握时态），现在完成时
③DE中have的修饰是to do sth很不合理；to do通常表示一定的purpose
I lifted the weight to free my leg.
comparison. Depending on when the sentence was written and what the writer
intended to express, the verb form could be either had contributed or has
contributed. The use of has contributed implies that, from the perspective of the
sentence, the comparison between German-born U.S. residents and those from
other countries still holds true.
B： that any country has contributed也是share的定语
无成分差异，考虑外延与内涵，从句和不定式的区别，定语成分考虑主句的约束力，主句的发生不能导致变化部分的发生，即墨西哥占了多少百分比与其他国家没有关系，不能用不定式。