ADJECTIVES IN COMPARISONS
 
Adjectives tell us what is different about a noun. Comparatives tell us which noun of 2 has more of the quality. And Superlatives tell us which noun "has it" the most of all.

Now let's take a real Adjective: QUICK. If 2 people are QUICK one is probably QUICKER.  That's the Comparative. And if 3 people are QUICK one is the QUICKEST. That's the Superlative.

So that's the idea. The way Adjectives form into Comparatives and Superlatives is about the same for short adjectives, which just add -er and -est like Quicker and the Quickest above. The superlative uses the with the -est form because it is the only one of its kind. That is why it uses the definite article the.


Adjectives ending with "y" like Happy and Easy change the "y"
to "i" and then add the -er and -est endings.
 HAPPY - HAPPIER - HAPPIEST
EASY - EASIER - EASIEST

Longer Adjectives use "more" and "the most"
BEAUTIFUL  --   MORE BEAUTIFUL  ---  THE MOST BEAUTIFUL
DIFFICULT  --   MORE DIFFICULT  -- THE MOST DIFFICULT

And, of course, there are a number of exceptions:
GOOD  --  BETTER  --  THE BEST
BAD  -- WORSE  -- WORST
LITTLE -- LESS  --  THE LEAST
MUCH/MANY  --  MORE  --  THE MOST

Now you can do a lot, BUT you can't do anything unless you can use these in a sentence.