Much, Many, A lot of
Much
We use much with uncountable nouns in negative and interrogative sentences.
Example:
There isn’t much butter left.
Is there much butter left?
Many
We use many with countable nouns in negative and interrogative sentences.
Example:
We don’t need many eggs for this pie.
Do we need many eggs for this pie?
A lot of/Lots of
We use a lot of/ lots of with countable and uncountable nouns in positive sentences.
Example:
We need a lot of time to organize the party.
There are lots of people at the party.
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