885SC A 7

wyks

请教885SC/A/7

Dental caries and gingivitis can be exacerbated not only by the foods patients eat but also by when the patients eat them.(A) not only by the foods patients eat but also by when the patients eat them
(B) by not only the foods patients eat but also by when the patients eat them
(C) not only by the foods patients eat but also by time when the foods are eaten
(D) by not only the foods that are eaten by patients but also by the times the foods are eaten
(E) not only by what patients eat but also by when they eat it

正确答案是E。但是IT没有指带对象。如果是FOODS，那么应该是THEM，A。

请指教我的错误！

Marrow

before "it",where is "foods"?only "what p eat"

xiang_y

it 指带 "what patients eat" which should be "single" not the "foods" since "foods" do not appear in answer E.

wyks

我的问题是为什么A没有E好呢？

在A里，有FOODS，所以THEM指代FOODS。没有错？

IT怎么能指代前面所有的内容呢？

真心谢谢大家的关注！

WYKS

xiang_y

There is no problem in A, but E is better, since ETS prefer parallel structure.
"What patients eat" is a noun clause which can be treated as a noun, and it is not a complete sentence. "It" can refer to this noun clause.

wyks

楼上的分析还是有理，ETS喜欢对称型的题。WHAT AND WHEN 是名词性的从句。IT指代前面的名词性从句是我第一次碰上。

谢谢。

WYKS

lizhihuantu

the problem with A is not parallel

sammaijgd

平行不是选择对错的标准

tinabeauty1984

名词性从句在语法作用上相当于一个单数名词，用it指代很make sense 啊

eaststar

when引导的丛句可作为noun？ by when....没有问题吗？