Using much and many is very confusing.  Many Americans are confused too!  We will learn how and when to use each word correctly.

Grammar

Things can be counted. We call them Countable Nouns. Examples: students, books, pencils, dogs, flowers, kites, bananas, cars, apples, teachers, and etc.

Things cannot be counted. We call them Uncountable Nouns. Examples: sugar, dust, water, jam, flour, syrup, salt, coffee, ink, sand, air, money, tea, juice, oil, butter, and etc.

Countable nouns we use many.

Uncountable nouns we use much.

 

Exercises

Do these online:

http://www.agendaweb.org/exercises/grammar/countable-uncountable/many-much

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

http://www.eflnet.com/grammar/muchmany1.php

http://www.agendaweb.org/exercises/grammar/countable-uncountable/many-much-2

 

Many more exercises:  http://www.agendaweb.org/exercises/grammar/countable-uncountable/many-much