According to the website dicionário Cambridge, Much, Many, Little, Few are quantifiers and they are placed in front of the nouns:
Attention: Much and Many can be used in affirmative, negative and interrogative sentences, but mostly in negative sentences.
Many and Few are used before countable, plural nouns.
Many express big quantity of something:
Few express a small quantity of something:
Much and Little are used before uncountable nouns:
Much express big quantity of something:
Little express a small quantity of something:
According to the website Grammarly, there is a subtle difference between “few” and “a few”, “little” and “a little”.
Few and little brings the ideas that the substantive is not enough, insufficient.
A few and a little alson indicates small quantity, but, enough.
Few means small quantity, not sufficient.
A few means small quantity, but enough in the context.
There are few chairs left. ( they are not enough )
There are a few chairs left. ( it is only a small quantity, but they are enough )
Little means a small quantity, not enough.
A little indicates a small quantity, but enough.
We have little time. Let’s hurry!
We have a little time. Let’s finish.
I’ve got little money. I can’t buy a house.
I’ve got a little money. It’s enough for an ice-cream.
How many e how much are used to ask questions about quantities.
How many asks about countable nouns:
How much asks about uncountable nouns:
How much is also used to ask about prices:
A lot of and Lots of: are used before large quantity of something, before countable or uncountable, affirmative, negative and interrogative sentences.
“A lot of” is more formal than “Lots of”.
Finally:
Many = big quantities, countable nouns, negative sentences and questions.
Much = big quantities, uncountable nouns, negatives sentences and questions.
Few = small quantities, countable nouns.
Little = smallquantities, countable nouns.
A lot of = big quantities, countable or uncountable nous, affirmative sentences; formal.
Lots of = big quantities, countable and uncountable nouns, negative sentences; informal.
Let’s practice: