Prep 2 - 83

lhccmn · 发表于 2007-5-8 12:12:00

83. (28949-!-item-!-188;#058&004110)

The number of plant and animal species that humans are known to have forced to extinction in the last half millennium is over 800.

(A) humans are known to have forced to extinction

(B) humans are known as having forced to become extinct

(C) humans are known for forcing to become extinct

(D) are known that humans forced to become extinct

(E) are known as having been forced to extinction by humans

答案是A. 不是很理解这里定语句子的结构，应该是plant and animal species are known....请帮忙解释一下。谢谢！

skull · 发表于 2007-5-20 23:27:00

will_kk · 发表于 2007-5-21 00:54:00

The number of plant and animal species that (humans are known to have forced to extinction in the last half millennium) is over 800.

括号内是个定语从句that指代species带入是humans are known to have forced (that) species to extinction in the last half millennium

老愚 · 发表于 2007-5-25 14:49:00

同问。这句话是什么结构，看不明白

楼上，force a to b 这样可以么，只听说force sb to do

老愚 · 发表于 2007-5-27 09:00:00

本贴相关题目 GMATPrep-2007E2-SC-83 (YZOE)