prep-1-93，一道没有讨论过的语法题，各位NN帮忙啊，谢过谢过！

hahashuo · 发表于 2011-10-29 14:09:07

Both the complexity of the phenomenon known as extinction and the vastness of the biosphere, having prompted many scientists to call for a large increase in the number of biologists working both in the field and in laboratories to clarify the relationships among the planet's many endangered life-forms.

(A) and the vastness of the biosphere, having prompted many scientists to call for a large increase in the number of biologists working both
(B) and the vastness of the biosphere has prompted many scientists calling for a large increase in the number of biologists both working
(C) and the vastness of the biosphere have prompted many scientists to call for a large increase in the number of biologists working both
(D) as well as the vastness of the biosphere have prompted many scientists to call for a large increase in the number of biologists who both work
(E) as well as the vastness of the biosphere has prompted many scientists to call for a large increase in the number of biologists who work both
怎么判断主语是什么呢，是the complexity of the phenomenon known as extinction and the vastness of the biosphere还是the vastness 呢？为什么用的是have而不是has 呢？

酱子啊 · 发表于 2011-10-29 14:41:50

Both the complexity of the phenomenon known as extinction and the vastness of the biosphere 这个是主语。。所以谓语动词用HAVE..

本贴相关题目 GMATPrep-2007E1-SC-93 (MSZY)

prep-1-93，一道没有讨论过的语法题，各位NN帮忙啊，谢过谢过！

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