为什么ETS在解释SC的时候，经常会用instead of而不是rather than呢？

asupls

大家都说ETS的优选结构是rather than。为什么我在看OG 11的SC的时候，发现ETS经常用instead of 来解释应该用那个单词而不要用哪个单词呢？既然rather than是优选，他们自己为什么不用呢。

可能是个傻问题，大家不要踩啊，^_^

seagreen

rather than和instead of在很多情况下是可以替代的，但是也有例外。
(x) instead of (y)，如果x和y是介词短语，用(x) rather than (y)更好，见og11 verbal review sc-99的解释。

AMBER513

看一下！               

AMBER513

The "of" in "instead of" is a preposition, and its object must be a noun.  Thus, "instead of" can only be used to compare single nouns, and the GMAT Sentence Correction seems to avoid even this use.  The GMAT also seems to avoid the "instead of" [gerund] structure.   The "than" in "rather than" is a subordinate clause, so the structure "rather than" is considerably more flexible in what can follow it.
ETS在解释的时候都是在比较单词，是noun vs. noun，所以用instead of 比较好