Question

Que significa A lot off, many y much?

Answer 1

Hola!
A lot of

Se utiliza en frases afirmativas, delante de un sustantivo:

Contable en plural:

I have got a lot of books.

Incontable (singular):

I have got a lot of work.

Much

Se utiliza en frases interrogativas y negativas, delante de un sustantivo incontable (singular):

How much water is there in the swimming-pool?

There isn’t much water in the swimming-pool.

Many

Se utiliza en frases interrogativas y negativas, delante de un sustantivo contable en plural:

How many apples are there in the basket?

There aren’t many apples in the basket.

Answer 2

Las 2 primeras son mucho y la 3 es cuanto ejemplos: i have a lot of apples i have many money to spend no se mucho ingles pero trato de ayudar espero que te sirva :D