Ingles

Present Perfect
The Present Perfect in English is a verb tense used to refer to actions that happen in the recent past and that have some connection with this.Its equivalent in Spanish isthe Present Perfect:

I have sat the letter.

(Indicates that the action just happened)

To build the affirmative form of the Present Perfectodebemos used asauxiliary verb TO HAVE in Simple Present andaccompanied by themain verb in its past participle (either regular or irregular verbs verbs):

I have bought a new dress. |
You have studied the lesson. |
He has broken the window. |
Shehas lost the keys. |
Remember the 3 rd person singular should get the "S" in elauxiliarbecause it is the Simple Present.
However, to form a question we put elauxiliar the beginning of the sentence,then the subject and then the main verb past participle also:

Have I bought a new dress? |
Have you studied the lesson? |
Has he broken the window? |
Has she lost the keys? |

For itspart, the negative is formed by placing the negation NOTentre the auxiliary and the main verb, for example:

I have not bought a new dress. |
You have not studied the lesson. |
He has notbroken the window. |
She has not lost the keys. |

You can also use the contracted form of negation colocandoHAVEN'T orHas not appropriate.
PAST PERFECT
Past Perfect The English language is a verbtense used to refer to an action that took place in a time before another action, although bothhave happened in the past by establishing an order among them, for example:The finished film HAD When She Arrived at the cinema.

(First action: the movie was over
Second action: she went to the movies)

Sarah HAD dinner when to her husband Prepared got home.

(First action: Sarah hadprepared dinner
Second action: her husband came home)

To build the affirmative form the Past Perfect should be used asauxiliary verb TO HAVE in Past Simple and accompanied by the main verb...