rather是副词，(1)加在形容词前=quite，表示相当，如：a rather difficult problem；(2)加在动词前表示有点，如：I rather believe that；(3)or rather 表示确切地说，进一步说，如：She worked as a secretary, or rather, a personal assistant. ；(4)not/but rather表示然而，如：The walls were not white, but rather a sort of dirty grey.

think of O1 as O2是可以的
think of 后面带双宾语吗？

not as X,but as Y这个结构必须以not开头，所连接的两个部分必须平行
必须都是as,不能替换其中任意一个

not...but或者not as...but as...

记住not A but B的表达， AB要相同

Split#1 根据idiom not ... but ... 去掉 选项D
Split#2 Parallelism：根据not ... but ... 去掉选项A、B、E

A选项：not…but…是习惯表达，两者之间添加的内容应保持一致，即，用not as an expense, but as an investment，或用not an expense, but an investment。

B: 里面expense 应该是an expense？

？所以B错在哪里。。。。是expense和an investment 不平行吗，expense要加an？

请问D选项中间的逗号没有问题吗？

做对了，但是巩固一下Closed Parallelism Markers：both...and... ; either...or... ; neither...nor... ; not...but...; not only... but also...(also 可被省略，或替换为but... as well... ,not just... merely...等等) ; from... to...

in terms of的意思是 used to show what aspect of a subject you are talking about or how you are thinking about it.在这里可以替换as 表示举例 但是第二个but后边缺少平行的成分。

not as X, but as Y.是一个类似固定的用法吗？as不能放在not的前面？

E选项og上说是in terms of可以代替as但是but后面少了一个in terms of 或者as

think of … as … （as… 是作宾补吗）

这里如果not as的顺序变化是不是对句意的表达会有不同？

not but 是closed maker，后接词组或短语开始部分需一致

纠个小错~
A选项的分析中
应当是 或用not ”an” expense, but an investment 吧~

OG上给的答案是D呀！！

D选项为什么不对？和A选项里解释给出的一样样的啊