1. We use neither and not to mean ‘also not’ . They mean the same.
Neither and nor come at the beginning of a clause, and are followed by auxiliary verb + subject.
neither/ nor + auxiliary verb + subject
- I can’t swim. Neither can I ( NOT I also can’t)
- I don’t like opera. Nor do I (NOT I don’t too)
2. We can use not…either with the same meaning
- I can’t swim. I can’t either
- I don’t like opera. I don’t either.