Bevestigende zin (+) wordt altijd ontkennend (-) bij een tag question
I am (+) a great host aren't (-) I
You/we/they are (+) a great host aren't (-) you/we/they
He/she/it is (+) a great host isn't (-) he/she/it
I am not (-) a great host Am (+) I
You/we/they aren't (-) a great host Are (+) you/we/they
He/she/it isn't (-) a great host Is (+) he/she/it