DO and DID

VERB TO DO

DO AND DID

DEF : "Do" es verbo ( hacer) y también es un modo auxiliar que usamos en inglés y que no tiene traducción al español. Se utiliza para formar la interrogación (preguntas), la negación y también para las respuestas cortas. La forma auxiliar "do" nos indica que el verbo se conjuga en presente simple.

Affirmative	Negative	Interrogative
I go	I don't go	Do I go ?
You go	You don't go	Do you go ?
He goes	He doesn't go	Does he go ?
She goes	She doesn't go	Does she go ?
It goes	It doesn't go	Does it go ?
We go	We don't go	Do we go ?
You go	You don't go	Do you go ?
They go	They don't go	Do they go ?

Affirmative

I go to New York - Yo voy a New York

He goes to New York - El va a New York

Negative

I don't go to New York - Yo no voy a New York

He doesn't go to New York - El no va a New York

Interrogative

Do I go to New York ? - ¿Voy yo a New York ?

Does he go to New York ? - ¿Va él a New York ?

DID

Este tiempo verbal utiliza el auxiliar DID (pasado del verbo to do) tanto para la forma negativa como para la interrogativa. La contracción negativa (o forma corta negativa) es DIDN'T (did not).

• Did se usa para hacer preguntas en pasado.
  
• Para responder negativamente en pasado
  

Affirmative	Negative	Interrogative
I went	I didn't go	Did I go ?
You went	You didn't go	Did you go ?
He went	He didn't go	Did he go ?
She went	She didn't go	Did she go ?
It went	It didn't go	Did it go ?
We went	We didn't go	Did we go ?
You went	You didn't go	Did you go ?
They went	They didn't go	Did they go ?

Ej: I didn't watched the last film on the tv!

To watch es webo regular por lo tanto al hacer la frase en pasado, usamos el didn't +watched.

En inglés tenemos para el pasado verbos regulares y verbos irregulares.

• Los verbos regulares son los que conservan la misma raíz en todas sus formas y el pasado termina en “d”o “ed”. Ej: to teach (teached), to think (thinked), to look (looked)
  
• Los verbos irregulares son aquellos en los que cambia la raíz y son distintos en pasado y participio.Ej: to think | thought | thought; to eat | ate | eaten