past simple-present perfect simple (form (negative (Subject Auxiliary …
past simple-present perfect simple
The present perfect tense is used to describe something that happened in the past, but the exact time it happened is not important. It has a relationship with the present. I have done my homework = I finished my homework in the past. It is not important at what exact time, only that it is now done.
ever, never, once, many times, several times, before, so far, already, yet.
Subject Auxiliary not Verb (infinitive)
He didn't arrive today.
(Question word) Auxiliary Subject Verb (infinitive)
(When) Did we arrive?
Subject Verb (+ -ed)
They arrived yesterday.
yesterday, a week (month, year) ago, last (month, year, weekend, Monday) night, the day before yesterday, two days (months, years) ago.
Past Simple is used for both recent and distant past actions. Remember, it is that the activity you are talking about has been completed, and is not still going on. If you are describing when something happened, you'll use Past Simple
Sujeto to have + not past participle
to have sujeto past participle
Sujeto to have past participle