As in this sentence:
Not only should you cook your meals, but also they should be healthy.
The first subject is "you", and the second subject is "meals". Can I use not only... but also...
this way? Otherwise what's the best way to connect the two parts?
Best Answer
Not really. Not only . . . but also assumes parallel subjects.
The best way to connect them, in the example you gave, is simply to drop the also:
Alternatively, you could rewrite it to make the subjects parallel:
There you're getting into the passive voice, though, which a lot of people like to avoid. Personally, I would avoid it here, simply because it's too wordy.
One more possibility, again trying to make the subjects parallel:
Slight change in meaning, but works better.