语法笔记里的一道题目，请大家指教

serenashu

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(A)

E.gradual enough so that one cannot distinguish them



语法笔记里说C选项的重心改变了，还有unable to be很wordy~~~不太明白，请大家指点一下~~~

eshopaholic

倒装句，often前置，强调的是gradual (指economic shits )， 而非它难以区分（察觉）

不考虑句子重心的话，也应写成so gradual that they can't be distinguished....

serenashu

谢谢LS，可是我就是想弄清句子重心怎么个改变法？每次一说到句子重心我就懵了~~~~

llicha0papa

之前看过一篇类似帖子。我觉得是因为 indistinguishable 和 be unable to be distinguished 强调的重点不同，indistinguishable 强调 economic shifts 自身的特性，be unable to be distinguished 强调作为distinguish 的施与者（人才能distinguish）对economic shifts 的动作。个人见解哈~仅供参考~