标题: Prep08 174题不懂~~ [打印本页] 作者: yuexuannan 时间: 2012-10-31 17:11 标题: Prep08 174题不懂~~ 174. Often major economic shifts are so gradual as to be indistinguishable at first from ordinary fluctuations in the financial markets.
A.so gradual as to be indistinguishable
B.so gradual so that they can be indistinguishable
C.so gradual that they are unable to be distinguished
D.gradual enough not to be distinguishable E. gradual enough so that one cannot distinguish them
请问为啥不能选C呢？笔记上解释得不是很清楚。作者: DUKB24 时间: 2012-10-31 23:16 unable/able to be done is universally wrong
for it creates some self-contradictory meaning
when u say something/someone is able to do something
you imply that something/someone actually is the subject that performs such action
however，able to be done
is to convey that someone/something is controlled to perform some actions that they can themselves perform
that makes no sense作者: passme 时间: 2012-11-1 10:16
so....as to 仅用于简单的细表结构中，且结果状语的主语与主句的主语一致。