● Adverbs of frequency: always, never, often, seldom, usually, etc. I usually drink coffee for breakfast. I never drink alcohol.
● Adjectives vs adverbs, word formation, word order i.e. good vs well, quick vs quickly
● Comparative of adjectives with -er and more i.e. happier, more comfortable
● Superlative of adjectives with -est and the most i.e. the happiest, the most comfortable