We use quantifiers when we want to give someone information about the number of something: how much or how many.

Sometimes we use a quantifier in the place of a determiner:

Most children start school at the age of five.
We ate some bread and butter.
We saw lots of birds.

We use these quantifiers with both count and uncount nouns:

all    any    enough    less    a lot of    lots of   
more    most    no    none of    some     

and some more colloquial forms:

plenty of    heaps of    a load of    loads of    tons of     etc.   

Some quantifiers can be used only with count nouns:

both    each    either    (a) few    fewer    neither    several   

and some more colloquial forms:

a couple of    hundreds of    thousands of    etc.   

Some quantifiers can be used only with uncount nouns:

a little    (not) much    a bit of   

And, particularly with abstract nouns such as time, money, trouble, etc:, we often use:

a great deal of    a good deal of   

Members of groups

You can put a noun after a quantifier when you are talking about members of a group in general…

Few snakes are dangerous.
Both brothers work with their father.
I never have enough money.

…but if you are talking about a specific group of people or things, use of the … as well

Few of the snakes are dangerous.
All of the children live at home.
He has spent all of his money.

Note that, if we are talking about two people or things we use the quantifiers both, either and neither:

One supermarket    Two supermarkets*    More than two supermarkets   

The supermarket was closed

The supermarket wasn't open

I don’t think the supermarket was open.

Both the supermarkets were closed.

Neither of the supermarkets was open.

I don’t think either of the supermarkets was open.

All the supermarkets were closed

None of the supermarkets were open

I don't think any of the supermarket were open

*Nouns with either and neither have a singular verb.

Singular quantifiers:

We use every or each with a singular noun to mean all:

There was a party in every street.     =    There were parties in all the streets.   
Every shop was decorated with flowers.     =    All the shops were decorated with flowers.   
Each child was given a prize.     =    All the children were given a prize.   
There was a prize in each competition.     =    There were prizes in all the competitions.   

We often use every to talk about times like days, weeks and years:

When we were children we had holidays at our grandmother’s every year.
When we stayed at my grandmother’s house we went to the beach every day.
We visit our daughter every Christmas.

BUT: We do not use a determiner with every and each. We do not say:

The every shop was decorated with flowers.
The each child was given a prize.

Activities

Decide if sentences are correct or incorrect   
Choose the correct quantifier