Add -er + THAN to 1-syllable adjectives.
taller than, faster than, bigger than, happier than
not taller than
Is he taller than John?
Use MORE + Adj + THAN for 2 or more syllables.
more expensive than, more beautiful than, more famous than
not more expensive than
Is this car more expensive than that one?
| Example / Question | Positive / Short Answer | Negative / Short Answer |
|---|---|---|
| Short: Tom vs John | Tom is taller than John. | Not: Tom is more tall than John |
| Long: Ferrari vs Toyota | Ferrari is more expensive than Toyota. | Not: expensiver than |
| Irregular: Good | This book is better than that one. | Not: gooder than |
| Rule | Base / Standard Form | Applied Form |
|---|---|---|
| Never Double Compare | Do NOT use "more" together with "-er"! | taller (CORRECT) vs more taller (WRONG) |
Used to compare differences between two entities.
In formal written English, "taller than I am" is traditional. In everyday natural spoken English, "taller than me" is 100% standard.








