Either / or, Neither / nor Too
1. He doesn't like
one of those bands.
either / neither / nor
2 I hate that song, and my sister hates it
neither / too / either
3. Neither my brother my mother knows
about this.
nor / neither / or
4. He didn't come to the party, and his brother
didn't come
nelther / nor / either
5. He
has a cat or a dog. I can't remember,
Neither / too / either​

1. He doesn't like either of those bands.
When we use "either", it means that the person does not like any of the options mentioned. In this case, he does not like any of the bands.

2. I hate that song, and my sister hates it too.
When we use "too", it means that the person mentioned feels the same way as the previous person mentioned. In this case, both the speaker and their sister hate the song.

3. Neither my brother nor my mother knows about this.
When we use "neither... nor", it means that neither of the mentioned options is true. In this case, neither the brother nor the mother knows about this.

4. He didn't come to the party, and his brother didn't come either.
When we use "either", it means that the mentioned option is also not true. In this case, neither he nor his brother came to the party.

5. He has a cat or a dog. I can't remember either.
When we use "either", it means that the person is unsure or does not remember the mentioned options. In this case, the speaker can't remember if he has a cat or a dog.