OG12 SC64 平行结构中do的问题

chipmunk

Doctors generally agree that such factors as cigarette smoking, eating rich foods high in fats, and alcohol consumption not only do damage by themselves but also aggravate genetic predispositions toward certain diseases.
(A) not only do damage by themselves but also aggravate
(B) do damage by themselves but also are aggravating to
(C) are damaging by themselves but also are aggravating
(D) not only do damage by themselves, they are also aggravating to
(E) are doing damage by themselves, and they arealso aggravating


答案是A，但想问一下A中的 not only do damage by themselves but also aggravate中的do 是什么个用法？直接not only damage不行吗？

suners

回复 1# chipmunk


    not only damage可以啊，这里damage自己作动词。那么缺少宾语啊，damage作动词里有没有可以省略宾语的，不及物动词啊，楼主可以查查。
not only do damage，do是动词，damage是名词。

jaffa23

我认为不能直接用not only damage，因为but also后面是谓语+宾语的结构，前面的not only也应该是谓语+宾语结构。

chipmunk

十分感谢！

clairesslc

3楼的理由欠妥当。

damage是及物动词，后面应该要跟宾语。Longman上的例句可以看出，damage后面都跟宾语。所以not only damage是错误的，没有这种用法。

do damage里面的damage是名词，这是一种习惯用语。Longman里面的解释和例句是：
COLLOCATIONS
verbs
do damage   
例句：Too much sun can do severe damage to your skin.

所以可以把do damage联合起来看作谓语，后面如果要跟宾语可以加to.

综上，这里的do damage不是为了和后面平行，而是damage的习惯用法而已。