Much, Many, A lot of
We use much with uncountable nouns in negative and interrogative sentences.
There isn’t much butter left.
Is there much butter left?
We use many with countable nouns in negative and interrogative sentences.
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.
We need a lot of time to organize the party.
There are lots of people at the party.
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