Not only but also的用法問題?

We should do the best. We should be moral.

Connecting the two sentences with "not only ... but also":
1. omitting the subject & auxiliary/modal verb "we should":
= We should not only do the best but also (we should) be moral.

2. omitting "we":
= We not only should do the best but also (we) should be moral.

3. put in front of sentence to add emphasis (inversion structure):
= Not only should we do the best but (we should) also be moral.

Although (2) is grammatical, (1) and (3) are much more common ways to use "not only ... but also".

1、Not only——but also是相關連接詞，連接相同的字、片語、子句，所以寫成We should not only do the best but also be moral.由not only +V——-but also +V都接動詞
2、而將should 置於only之後,是因為否定副詞置句首，助動詞需置於主動詞之前，寫成Not only should we do but also be moral.
3、Hardly does she expect me to help him.

Not only.......but also==不但........而且; Also is an adverb.For example:He not only read the book but also remembered what he had read. Yip