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Verbos auxiliares: be – do – have

Aunque estos verbos también se emplean como verbos plenos, en su función de auxiliares contribuyen a la formación de algunos tiempos verbales.

 - Be

Present Tense                  Past Tense                         Part Participle                  -ing form

I am we are                        I was we were

You are you are                 you were you were                       been                     being

He/she/it is they are     he/she/it was they were

 - Contracciones

I´m = I am                                                                                                                isn´t = is not

He´s/she´s/it´s = he is/she is/it is                                                                     aren´t = are not

You´re/we´re/they´re = you are/we are/they are                                         wasn´t = was not

Weren´t = were not

 - Do

Present Tense                  Past Tense                         Past Participle                  -ing form

I do we do

You do you do                      did                                        done                                    doing

He/she/it does they do

Contracciones

Don´t = do not                 doesn´t = does not        didn´t = did not

 

 - Have

Present Tense                  Past Tense                         Past Participle                  -ing form

I have we have

You have you have               had                                       had                                       having

He/she/it has they have

 - Contracciones

I´ve/you´ve = I have/you have                                he´s/she´s/it´s = he has/she has/it has

We´ve/they´ve = we have/they have

I´d/you´d = I had/you had                                         he´d/she´d/it´d = he had/she had/it had

We´d/they´d = we had/they had

Haven´t = have not                        hasn´t = has not                              hadn´t = had not

 

 - Funciones

Mary is cooking dinner at the moment                                Present Continuous (referencia al presente)

We´re having a party tomorrow                                            Present Continuous (referencia al futuro)

The mobile was made in China                                              Passive

Do you still walk to work?                                                       Present Simple (interrogación)

I don´t know                                                                             Present Simple (negación)

Did she go to London last week?                                           Past Simple (interrogación)

He didn´t play on Saturday.                                                 Past Simple (negación)

Tony has just arrived.                                                            Present Perfect

He´s been learning English for two years.                      Present Perfect Continuous

Have you ever seen the Queen?                                          Present Perfect (Interrogación)

He had already left when I arrived.                                     Past Perfect

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