1. Determiners
There are different types of determiners. The type of determiner depends on the type of noun. Singular nouns always need a determiner. Plural nouns the determiner is optional. Uncountable nouns the determiner is also optional.

2. There are about 50 different determiners in the English language they include:
Articles: a, an, the
Demonstratives: this, that, these, those, which etc.
Possessives: my, your, our, their, his, hers, whose, my friend's, our friends', etc.
Quantifiers: few, a few, many, much, each, every, some, any etc.
Numbers: one, two, three, twenty, forty
Ordinals: first, second, 1st 2nd, 3rd, last, next, etc

3. Some Notes on Quantifiers Like articles, quantifiers are words that precede and modify nouns. They tell us how many or how much. Selecting the correct quantifier depends on your understanding the distinction between Count and Non-Count Nouns.

4. The following quantifiers will work with count nouns:       many trees       a few trees       few trees       several trees       a couple of trees       none of the trees

5. The following quantifiers will work with non-count nouns:       not much dancing       a little dancing       little dancing       a bit of dancing       a good deal of dancing       a great deal of dancing       no dancing

6. The following quantifiers will work with both count and non-count nouns:       all of the trees/dancing       some trees/dancing
most tress/dancing       most of the trees/dancing       enough trees/dancing       a lot of trees/dancing       lots of trees/dancing       plenty of trees/dancing       a lack of trees/dancing
In formal academic writing, it is usually better to use many and much rather than phrases such as a lot of, lots of and plenty of.

7. Conclusion With Unct. Nouns With Both With Ct. Nouns How much? no/none
a little
a bit (of)
a great deal of
a large amount of
a large quantity of
How many?
no/none
not any
some (any)
a lot of
lots of
plenty of
a few/few
a number (of)
several
a large number of
a great number of
A majority of