[問題]知英文法書P.302#58 (structure)

[agnes]

________ a solution to the problem of a future energy shortage, but it also helps to eliminate enviromental pollution.

(A) The photovoltaic cell not only provides

(B) Not only does the photovoltaic cell provide

(C) The photovoltaic cell provides not only

(D) Not only the photovoltaic cell provides

ANS: B

why not A?

[liwuu]

我想如果要選A的話,後面的it要去掉...but also helps to eliminate...

[agnes]

可是B不就是A的倒裝嗎?
兩者差別在哪?

@@"

[Jessy]

S + not only +V......, but also +V.....

Not only + 助V + S + V..., but also S + V....

我想是主詞位置的關係吧!
第一句主詞可共用, 所以後面子句不用重複主詞

[liwuu]

嗯...不好意思,打得太簡短了!!Jessy解釋得很清楚...

ps.Jessy也快要升為草莓族囉!!

[agnes]

謝謝五指哥和傑西姊! ^^