PAST SIMPLE
PRESENT PERFECT
When we want to talk about an action that occurred in the past and ended in the past and we indicate the time in which the action occurred ("last night" and "yesterday") it is used to talk about actions already concluded in the past.
Last week we traveled to Canada.
(La semana pasada viajamos a Canadá.)
Last year we dressed up as pineapples.
(El año pasado nos disfrazamos de piñas.)
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We use the negative auxiliary "did not" (or its contraction didn’t)
We necessarily use the auxiliary "did" to form the questions. Look at the structure
To answer the questions we use the following structure. It is not necessary to repeat the verb of the question, we just have to use “did” or “didn’t”.
NEGATIVE
Affirmative
To form affirmative sentences in the past simple correctly you must know if the verb is regular
Examples
I washed the car yesterday. (Lavé el carro ayer)
We washed the car yesterday. (Lavamos el carro ayer)
They washed the car yesterday. (Lavaron el carro ayer)
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We didn’t eat hamburger every day. (No comíamos hamburguesa todos los días)
They didn’t wash the car yesterday. (Lavaron el carro ayer)
Interrogative
Did I eat hamburger every day?
Did you wash the car yesterday?
The present perfect is a grammatical combination of the present tense and the perfect aspect that is used to express a past event that has present consequences. To form the present perfect, the auxiliary verb "to have" is used in the present and the past participle of the verb.
AFIRMATIVE
Subject + ‘to have’ + past participle of the verb ‘Jon Snow has flown in a dragon’
NEGATIVE
Sujeto + ‘to have’ + ‘not’ + participio pasado del verbo ‘The White Walkers haven’t arrived yet’
INTERROGATIVE
To have’ + sujeto + participio pasado del verbo + ? ‘Tyrion hasn’t finished his wine yet?’
How many times have you been to Tokyo?
(¿Cuántas veces has ido a Tokio?
We have seen this movie ten times.
(Hemos visto esta película diez veces.)
I have not finished the project (No he terminado el proyecto)
She has not worked at that company (Ella no ha trabajado en esa empresa)
Have you finished the project? Has terminado el proyecto?
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Has she worked at the company? Ha trabajado en esa empresa?
I have visited the white house (He visitado la casa blanca)
I hace Studied english for three years (He estudiado ingles por tres años)
