Main Auxiliary Verbs Forms

AUXILIARY VERBS / HELPING VERBS

TO BE

Base form = be

Present form = am/is/are

Past form = was/were

Present Participle / Gerund = being

Past Participle = been

TO DO

Base form = do

Present form = do/does

Past form = did

Present Participle / Gerund = doing

Past Participle = done

TO HAVE

Base form = have

Present form = have / has

Past form = had

Present Participle / Gerund = having

Past Participle = had