General Rule:

In English, when we compare two things or two people, we often use the comparative forms of adjectives or adverbs, for example:

My car is faster than my friend's car.

When we compare more than two things, we often use the superlative forms, for example:

This car is the fastest car in the world.

The Comparative Form :

The comparative form is made by adding -er to the short adjectives or more before the long adjectives and then add than.Examples:

• He's much more intelligent than his sister.
• A bicycle is cheaper than a car.

The Superlative Form :

The superlative form is made by adding the before the adjective then -est or the most before the long adjective.Examples:

• Oxford and Cambridge are the oldest universities in Britain.
• This is the most delicious meal I have ever eaten!

Forming the Comparative or Superlative :

How these forms are created depends on how many syllables there are in the adjective. For instance, "run" contains one syllable, but "running" contains two: run and ing.

Here are the rules:

[ultimatetables 1 /]

Some comparatives and superlatives have irregular forms :

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After reading this lesson you may want to do some exercises, then click HERE.