Question

2.
Negative sentences ( Oraciones Negativas)
SUJETO + VERBO AUXILIAR (HAVE / HAS) + NOT + VERBO EN PARTICIPIO PASADO
EIEMPLOS:
I haven't talked to Peter (No he hablado con Peter)
She hasn't gone to work (No ha ido a su trabajo)
We haven't been to London (No hemos ido a Londres)
They haven't learned English (No han aprendido Ingles)​

Answer 1

Ejemplos:

 I have [I’ve] talked to Peter.(He hablado con Peter.)

 She has [She’s] gone to work.(Ha ido a su trabajo.)

 We have [We’ve] been to London.(Hemos ido a Londres.)

 They have [They’ve] learned English.(Han aprendido inglés.)

2. Negative Sentences (Frases negativas)

Sujeto + verbo auxiliar (to have) + “not” + participio pasado…

Ejemplos:

 I haven’t talked to Peter.(No he hablado con Peter.)

 She hasn’t gone to work.(No ha ido a su trabajo.)

 We haven’t been to London.(No hemos ido a Londres.)

 They haven’t learned English.(No han aprendido inglés.)

2    present perfect.

S + have or has + not + past participle

Singular

Plural

I have not worked

We have not worked

You have not worked

You have not worked

He has not worked

She has not worked

They have not worked

It has not worked

Notice the use of "has" for a man, a woman, or a thing.

Also, it's important to know the irregular past participles.

 

Most Americans use the contracted form:

have + not = haven't   /   has + not = hasn't

Singular

Plural

I haven't worked

We haven't worked

You haven't worked

You haven't worked

He hasn't worked

She hasn't worked

They haven't worked

It hasn't worked