1  the longest

the most expensive

2  the most comfortable

the best

3 the worst
the driest

4 the largest

the most dangerous

5 the nicest

the shortest

6 the nearest

the noisiest

7 the most exciting

the most important

8 the slowest

the fastest

9 the most beautiful

the tallest

10 the lightest

the heaviest

11 the thinnest

the biggest

12 the richest

the most careless

13 the hardest

the farthest/furthest

1 syllable    the+adj+-est

2 syllables + ending in "y"  the+ adj(-y đổi thành-i)+-est

                   + not ending in "y"  the +most+ adj

3 or more syllables  the+most+adj