Quantifiers: Each, Every, All, Both, Neither, Either

Quantifiers say “how many / which ones”. They pair with different noun types.

• each / every + singular noun: each student, every day. each stresses individuals; every stresses the whole set.
• all: all the students, all of them, all day
• both = two: both sisters, both of us
• neither = not one of two: Neither answer is correct. + singular verb
• either = one of two: Either day is fine.

Negation: I don't like either of them. · Neither of them came.

Not: both of them didn't come — prefer neither of them came.