not only…but also中，also可以省略，例如：
They have lost not only their jobs but their homes their self- respect anf even their reason for living.他們不僅失去了工作，還失去了家園，自尊心，甚至活下去的理由（摘自《柯林斯英漢雙解大詞典》）（本句中，but also中的also被省略了）
Not only…but also是英語中比較常見的一個關聯詞組，用於連接兩個表示並列關係的成分，着重強調後者。它的意思是“不僅…而且．..”其中的also有時可以省略。
主要用法
1、連接主語：
Not only I but also Tom and Mary are fond of watching television.
不僅我，而且湯姆和瑪麗都喜歡看電視。
Not only Jim but also his wife saw her.
不但吉姆而且他妻子也見到了她。
2、連接謂語動詞
The Americans and the British not only speak the same language but also share a large number of social customs.
注意not only…but also連接的動詞一般不重複，這與漢語不同。如漢語説“我不僅懂英語，而且懂俄語”，英語則説“I know not only English but also Russian”，而不説“I not only know English but also know Russian”。
再如：“氣體不僅改變形狀，而且改變體積”，英譯為“A gas changes not only in shape but also in volume.”（注意介詞常重複）
3、連接賓語：
The problem for the recipient was trying to guess not only who the sender was， but also what his secret feelings might be.
收信人不僅要盡力猜出是誰的，還要推測寄信人內心有什麼想法。
4、連接賓語補足語：
Light and bright colors make people not only happier but more active.
淺色和鮮豔的顏色不但使人看了高興，也會使人更加活潑。
5、連接表語：
Shakespeare was not only a writer but (also) an actor。
莎士比亞不僅是一位劇作家，而且是一位演員。
6、連接狀語：
If your friend reminds you kindly of your faults， take what he says not merely pleasantly but thank fully.
如果低你的朋友善意地指明出你的缺點，你不但要欣然接受，而且要心懷感激之情
後面的部分：only 和but都可以省略，但只能省略其一，不能同時，否則會變成“”就是另一個意思了
即只能變成“not ......”或者“ also
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