Either vs. both

[Nicky_K]

Hello!


Do you like vanilla or chocolate ice cream?

A: I don't like either. ([STRIKE]I don't like both.[/STRIKE])
B: I like both. ([STRIKE]I like either.[/STRIKE])

As I see, we use 'either' in negative and 'both' in affirmative sentences. Is it a rule? If not, is there any rule, which explaines this? Thank you.

BTW. 'I don't like both' would be correct, if e.g. I like each of them but not both at the same time on the same plate. That's not what I mean.;-)

 

[Nicky_K]

:?:

 

[Chicken Sandwich]

NOT A TEACHER

Here's a similar thread on WordReference I don't like either - WordReference Forums

I hope it answers your question.