tenses
present simple key words
every day/week...., always, often, usually, sometimes
forget
forgot
A man
men
heavy
comparative: heavier
superlative: the heaviest
become
become
present continuous auxiliary verbs
am, is, are
give
gave
a tooth
teeth
good
comparative: better
superlative: the best
buy
bought
past simple auxiliary verb
did
go
went
a mouse
mice
bad
comparative: worse
superlative: the worst
choose
chosen
past continuous auxiliary verbs
was, were
catch
caught
a child
children
much, many
comparative: more
superlative: the most
drink
drunk
past perfect key words
already, yet, before, after, by the time, for, since
bring
brought
a deer
deer
beautiful
comparative: more beautiful
superlative: the most beautiful
forget
forgotten