Grammar points from elective.
Comparatives and superlatives.

Comparatives are words used to
compare two people
- I'm taller than my brother.
- My father is stronger than me.
- Ben Lomond is higher than Blencathra.
- My watch is more expensive than my brother's.
The basic rule is that single syllable adjectives use the
-er ending, whilst multiple syllable adjectives
use
more + adjective / adverb.
DO NOT USE BOTH MORE AND -ER.
LIAM WILL THROW YOU OUT A WINDOW.
Superlatives are adjectives / adverbs that describe the greatest of a group.
- The Flash is the fastest man alive.
- superman is the strongest superhero
- Wolverine is the toughest mutant.
- Professor Xavier's mind is the most powerful.
The basic rule is that single syllable words are made by the + adj+est. Multi-syllable words are made using
the + most + adj.
DO NOT USE BOTH MOST AND -EST.
LIAM WILL THROW YOU OUT A WINDOW.
There are some differences in spelling, but pronunciation is the same. There is a
rule check and quiz here. It's quite simple, but effective.
The British Council website has some more
notes here