Comparatives are special forms of adjectives. We use comparatives to compare nouns. We usually use the word “than” when we compare two things with comparatives.
Example:
Meaning:
The sun is bigger than the moon.
The sun and the moon are not the same size. The sun is bigger and the moon is smaller.
Example:
Meaning:
Level 7 is more difficult than level 2.
Level 7 and level 2 are not the same. Level 7 is difficult and level 2 is easier.
Example:
Marco’s old roommate was messy. His new roommate is cleaner.
Meaning:
Marco’s new roommate is cleaner than his old roommate. In some cases like this, we don’t need to use the word “than” because we know what two things are being compared: Marco’s old and new roommate.