Quantifiers

DETERMINERS

All, another, any, both, each, either, enough, every, (a) few, fewer, less, a lot of, (a) little, many, more, most, much, neither, no, one, other, several, some, this, that, these, those are determiners, i.e., they come BEFORE NOUNS.

All, any, enough, less, (a) little, a lot of, more, most, much, no, some, this, that can be used BEFORE UNCOUNTABLE NOUNS.

Another, any, each, either, every, neither, no, one, some, this and that can be used BEFORE SINGULAR COUNTABLE NOUNS.

All, any, both, enough, (a) few, fewer, a lot of, many, more, most, no, other, several, some, these, those can be used BEFORE PLURAL NOUNS.

Both, either and neither are used to talk about two things.
BOTH = A and B: Both Pierre and Marie Curie were scientists.
EITHER = A or B: She wanted to study either Physics or Maths.
NEITHER = not A and not B: Neither Pierre nor Marie were aware of the dangers of radiation.

Either & Neither - how to use them. #elt #englishgrammar #learnenglish #inglés #anglais #learnenglish pic.twitter.com/7Gju0GO1Ug

— Cork English Teacher (@CorkEngTeacher) June 1, 2015

Each is used to talk about two or more things; every is only used to talk about more than two. They are followed by a singular verb.

another (an + other) + singular non-specific count noun: I'd like another apple.
other + plural non-specific count noun OR non-specific non-count noun: Other students are sitting the exam, too OR You can find other information in this book.
the other + specific noun: I've got two computers. One of them is in my office. The other computer doesn't work.

A few means 'some' or 'more than expected'.

Quite can be used with a few to mean a fairly large number.

There are a few exams left!

Few means 'not many' or 'not as many as desired or expected'. Very can be used before few to emphasize it.

There are few tomatoes left!

All or all (of) the + plural or uncountable noun:
All animals need food (all = in general).
All (of) the animals in this zoo look sad (all (of) the = specific) / The animals all look sad.
All CAN'T be used without a noun. Use everything / everybody + singular verb: Everything is very expensive.

Use most to say 'the majority':
Most people live in cities (most = general).
Most of the people in the class are men (most of = specific).
Use every + singular countable noun to mean 'all of a group':
I work every Wednesday.

Some can be used to mean 'approximately' or 'a large amount'.

Sometimes more than one determiner can be used before a noun.

PRONOUNS

Pronouns are used INSTEAD OF NOUNS. 

EVERY (determiner) - EACH (pronoun)

NO (determiner) - NONE (pronoun)

OTHER (determiner) - OTHERS (pronoun)

A LOT OF (determiner) - A LOT (pronoun)

Pronouns can be used on their own, + of + pronoun, of + the, this, that, these, those, my, etc. + NOUN. of is optional with all and both before a noun after a determiner. All and both can also be used after a noun or pronoun or after a modal or auxiliary verb.

One another and each other are used as objects of verbs.