Present	I’m = I am You’re = you are He’s = He is She’s = she i It’s = it is we’re = we are they’re = they are
Past	I was = I was you were = you were he’s = he was she’s= he was it’s = it was we were = we were they were = they were
Future	I’ll = I will be you’ll be = you will be he’ll be = he will be she’ll be = she will be It’ll be = it will be we’ll be = we will be they’ll be = they will be

Continous tense

Present continous

Subject P pronoun

(ing) am is are

complement

I am studing english

Past continous

Subject P pronoun

(ing) was were

complement

I was studing english

Future continous

Subject P pronoun

(ing) will be

complement

I will be studing english

Reglas

1. Después de colocar el verbo en gerundi, si se desea agregar algún otro verbo, éste deberá estar precedido por el artículo to, seguido del verbo en su forma infinitiva.
2. a) para hacer una expresión formal, se ocupa al auxiliar en su forma entera después del sujeto. b) para hacer una expresión informal ocupará la abreviación del sujeto con el auxiliar.
3. En las oraciones en presente se puede manejar futuros inmediatos haciendo uso del contexto para manipular el sentido de la oración.