not only...but also 中不加also

Saman3Ma

OG2022 P1087有个例子：Correct: Surprisingly, the endangered species was found not only at the valley’s lowest elevations but throughout the entire valley.
Incorrect: Surprisingly, the endangered species was found not only at the valley’s lowest elevations but also throughout the entire valley.

OG解释：If the lowest elevations referred to are in the valley, but also would misleadingly seem to indicate that the entire valley was a separate category rather than a more general category
encompassing the lower elevations.

没看懂为啥加了also是错的，求科普，谢谢！

萝卜粥粥

个人理解：
not only和but also的两边是并列的，权重相等。这个句子的句意，是强调entire valley，entire valley 包括了 the valley’s lowest elevations。

cuicui2023

but：而是
but also：而且
此处不表包含，表转折和强调

Saman3Ma

萝卜粥粥 发表于 2023-7-15 11:30
个人理解：
not only和but also的两边是并列的，权重相等。这个句子的句意，是强调entire valley，entire v ...

谢谢。从“权重相等”来理解，确实加also不合适。

Saman3Ma

cuicui2023 发表于 2023-7-18 08:07
but：而是
but also：而且
此处不表包含，表转折和强调

谢谢

萝卜粥粥

Saman3Ma 发表于 2023-7-18 11:29
谢谢。从“权重相等”来理解，确实加also不合适。

我又仔细琢磨了一下，不知道对不对：
这个句子应该是not...but结构，不是not only...but also。only是表达前者是后者的一部分的意思，只是恰巧接在了not后面，所以confusing。