Present Perfect

Los auxiliares de Presente Perfecto son:

• Have / has / had

• Had

• Have / has

Los auxiliares del Pasado Perfecto son:

• Have / has

• Had

• To Be

En tiempos perfectos, el verbo principal se escribe:

• En pasado Simple

• En pasado Participio

• En forma limpia

El participio del verbo To be es:

• was / were

• been

• am/ is/are

El presente perfecto de " I write" es:

• I will write

• I has written

• I have written

Para negar y preguntar, el verbo principal queda:

• Limpio

• en pasado simple

• En participio

El pasado perfecto de " I had a car" es:

• I have had a car

• I had had a car

• I had a car

El presente perfecto de " I am good" es:

• I am been good

• I have been good

• I had been good