Much and Many

Watch this video first! https://www.youtube.com/watch?v=va4RiItIbew&feature=youtu.be

Much

Much is used to express that there is a large amount of something. It goes with uncountable nouns only. It can be used in negative and interrogative sentences. See some examples: 

We haven't got much time.

Did you pay much for this coat?

Many can also be used for affirmative sentences when it is preceded by too and so. See some examples:

There is too much salt

I love you so much

Many

Many is used to express that there is a large amount of something. It goes with countables nouns only. It can be used in negative and interrogative sentences. See some examples: 

Do you have many hobbies?

There aren't many tomatoes left.

Many can also be used for affirmative sentences when it is preceded by too and so. See some examples:

There are too many cars.

I didn't know you had acted in so many films. 

Practice!

Find some exercises about the use of much and many below:

https://www.englisch-hilfen.de/en/exercises/confusing_words/much_many4.htm

https://www.ego4u.com/en/cram-up/vocabulary/much-many/exercises

https://www.ego4u.com/en/cram-up/vocabulary/much-many/exercises?02