Comparative Form

The comparative form is used to compare two things or people.
There are three types of comparative forms: equality, superiority and inferiority.

1) EQUALITY   

    With adjectives and adverbs (as + adjective / adverb + as)    

• She as young as him / he is.
• She doesn't speak English as fluenty as her Brothers (does).

  
    With countable and uncountable nouns (as + much/many, little/few noun + as)

• There isn't as much traffic as yesterday.
• We don't know as many people as you do.
• They've got as little water as we have.
• Tom has as few books as Jane.

    With verbs (verb + as much + as)

• I don't smoke as/so much as you (do).

2) SUPERIORITY

    With short adjectives and adverbs (adjective / adverb + -er + than)

• She's prettier than all her shoolfriends.
• She works faster than him / he does. 

    With longer adjectives and adverbs (more + adjective / adverb  + than)

• The play was even more boring than I expected.
• Mary drives more carefully than John (does).

    With countable and uncountable nouns (more + noun + than)

• There's more traffic than yesterday.
• This library has more books than the one in Park Avenue.

 
    With verbs (verb + more + than)

• Paul eats more than all the other members of his family.

3) INFERIORITY

    With adjectives and advebs (less + adjective / adverb + than)

• Mary is less optimistic than her friends.

    With countable and uncountable nouns (less / fewer + noun + than)

• There's less traffic than yesterday. 
• You made fewer mistakes than me / I do.

    With verbs (verb + less + than)

• He earns less than me / I do.

Exercise 1 Exercise 2