请教 OG 83

jianhu8246

In 2000, a mere two dozen products accounted for
half the increase in spending on prescription drugs,
a phenomenon that is explained not just because of
more expensive drugs but by the fact that doctors are
writing many more prescriptions for higher-cost drugs.
(A) a phenomenon that is explained not just because
of more expensive drugs but by the fact that
doctors are writing
(B) a phenomenon that is explained not just by the
fact that drugs are becoming more expensive
but also by the fact that doctors are writing
(C) a phenomenon occurring not just because of
drugs that are becoming more expensive but
because of doctors having also written
(D) which occurred not just because drugs are
becoming more expensive but doctors are also
writing
(E) which occurred not just because of more
expensive drugs but because doctors have also
written

我想问 not just ...but also  是不是和 not only... but also 是同样的固定结构啊？
再就是 C中 为什么 两个because的并列就CONFUSING了呢 会产什么什么歧义呢？

lpilikeit

not just...but also...中更固定的部分应该是not...but...，而不是像not only...but also...那样出现not only就一定要有but also。not just...but also...，中更注重是的应该是not 和but后的内容要平行。这里之所以加上just...also...是和原句的逻辑意思有关的：原句是要表达一个现象的出现不光是由一个因素造成的，还有另一个因素也造成了这个现象的出现。所以not only...but also...可以表达这种并列且有些递进的意思。
C之所以不对就是因为其中的not just because...but because...没有表达出这种并列递进的关系，C否定了第一个原因而只肯定了第二个原因——因为also的缺失，but引导了强转折。变成说一个现象的出现不是因为第一个原因，而是因为第二个原因。改变了句子原有的逻辑意思。

XXXXXY

not just but also 相当于not only but also just=only 仅仅的意思
c 选项 but also 要连在一起写成 n+that be 罗嗦 n+having dong 错 用从句好于because of

tuscan

C because of 后面只能跟名词词组，跟从句就错了
B还有两个并列结构，becoming 和writing