Better/worse, Best/Worst
Incorrect : My pen is more good/bad than yours.
Correct : My pen is better/worse than yours.
Incorrect : He is the goodest/baddest boy in the class.
Correct : He is the best/worst boy in the class.
Note: The comparative and superlative forms of "good' are "better' and "best” respectively, whereas those of 'bad' are “worse' and 'worst'. These two adjectives have irregular forms of comparison.
