Tag questions

I. Achar o sujeito da oração → Colocar o sujeito em forma de Subjective Pronoun no final
II. Achar o Tempo Verbal → Colocar o verbo auxiliar antes do Subjective Pronoun
III. Se a Oração for Afirmativa → Question Tag Negativa (sempre na forma abreviada)
IV. Se a Oração for Negativa → Question Tag Afirmativa

Exemplos:

Carol teaches English, doesn’t she?
It is hot today, isn’t it?
Juan didn’t play yesterday, did he?
Bruna won’t work this week, will she?

EXCEPTIONS

THERE TO BE → TO BE THERE

There is a drugstore near, isn’t there?
There wasn’t a doubt, was there?

INDEFINITE PRONOUN (-ONE/-BODY) → AUXILIARY + THEY

Someone called, didn’t they?
Anybody can do it, can’t they?

INDEFINITE PRONOUN (-THING) → AUXILIARY + IT

Something will happen, won’t it?
Nothing else matters, does it?

LET’S → SHALL WE

Let’s study together, shall we?
Let’s go dinner, shall we?

I AM → AREN’T I

I am a bit crazy, aren’t I?
I’m here with you, aren’t I?

IMPERATIVE → WILL YOU

Pay attention, will you?
Don’t sleep now, will you?