标题: 求助比较中省略的用法，OG10-19，OG12-18(prep216) [打印本页] 作者: miraclle 时间: 2013-10-3 16:53 标题: 求助比较中省略的用法，OG10-19，OG12-18(prep216) Plants are more efficient at acquiring carbon than are fungi, in the form of carbon dioxide, and converting it to energy-rich sugars.
A. Plants are more efficient at acquiring carbon than are fungi,
B. Plants are more efficient at acquiring carbon than fungi,
C. Plants are more efficient than fungi at acquiring carbon,
D. Plants, more efficient than fungi at acquiring carbon,
E. Plants acquire carbon more efficiently than fungi,
答案选择C，解释B错的时候，原因是Than后面需要补出are，否则有acquiring fungi的歧义；后面的in the form of carbon dioxide错误的修饰了fungi；converting应当与acquiring平行。
这里B显示出歧义，所以不能省略are，可以理解。
不过再看一下OG10-19题，貌似没有歧义，所以解释不太懂：
OG10-19. In addition to having more protein than wheat does, the protein in rice is higher quality than that in wheat, with more of the amino acids essential to the human diet.
(A) the protein in rice is higher quality than that in
(B) rice has protein of higher quality than that in
(C) the protein in rice is higher in quality than it is in
(D) rice protein is higher in quality than it is in
(E) rice has a protein higher in quality than
答案选B，不选E的原因是Choice E needs either that in or does after wheat to make a complete and logical comparison. 但在这个句子中，并不会出现歧义protein和wheat的对比啊，因为rice has wheat是不符合逻辑的，为什么E还要补全呢？
同时，在此题的分析中，prep还列举出了(GWD-29-24)：According to recent studies comparing the nutritional value of meat from wild animals and meat from domesticated animals, wild animals have less total fat than (that of) livestock fed on grain and more of a kind of fat thought to be good for cardiac health. 这个句子不对。其在livestock前加上that of…比较的对象是animals has less fat和that，that指代fat，而事实上比较的应该是wild animals和livestock的属性，即拥有fat的多少，所以than后面也应该用平行的句式，即主谓宾形式。正确句子为：According to recent studies comparing the nutritional value of meat from wild animals and meat from domesticated animals, wild animals have less total fat than livestock fed on grain and more of a kind of fat thought to be good for cardiac health.
这个句子就直接把that of省略掉了，并且语意正确。那这个句子跟OG10-19中的E选项有什么本质区别呢?