1) Repeat the auxiliary verb(=hulpwerkwoord) (if there’s no auxiliary verb - use do/does/did)
2) Repeat the subject - make sure you use a personal pronoun
3) - statement positive, tag negative
- statement negative, tag positive
Aux verbs: can. may. must, shall, will, to be (in combination with another verb: to have + to do)
exception: I am old, aren't I?