Present Perfect / past simple

Let's remember the use of the present perfect tense that we studied last year.

Now let's see the difference between the past simple and the present perfect.

For and Since

We often use for and since when talking about time.

for + period

A period is a duration of time, for example: 5 minutes, 2 weeks, 6 years. For means "from the beginning of the period until the end of the period". In spanish (durante).

FOR can be used with both past simple and present perfect.

since + point

A point is a precise moment in time, for example: 9 o'clock, 1st January, Monday. Since means "from a point in the past until now." In spanish (desde).

SINCE is always used with present perfect tense.

for

a period

(from start to end)

>===<

for 20 minutes

for three days

for 6 months

for 4 years

for 2 centuries

for a long time

for ever