Diferencias de uso entre presente perfecto y pasado simple

1. .
PRESENT PERFECT VS. SIMPLE PAST

2. PRESENT PERFECT
is always used
when the time
is not
important, or
not specified
Vs. SIMPLE PAST
is always used
when details
about the time
or place are
specified or
asked for.

3. Diferencias de uso entre los verbos en
pasado simple y pasado participio
Irregular verbs
PASADO SIMPLE PASADO PARTICIPIO
TO BE
TO BEGIN
TO BREAK
TO CATCH
TO CHOOSE
TO COST
TO DO
TO DRAW
TO DRINK
TO DRIVE
TO EAT
TO FALL
TO FEEL
TO FILL
TO GET
TO GIVE
TO GO
TO HAVE
WAS / WERE
BEGAN
BROKE
CAUGHT
CHOSE
COST
DID
DREW
DRANK
DROVE
ATE
FELL
FELT
FILLED
GOT
GAVE
WENT
HAD
BEEN
BEGUN
BROKE
CAUGHT
CHOSEN
COST
DONE
DRAWN
DRUNK
DRIVEN
EATEN
FALLEN
FELT
FILLED
GOTTEN
GIVEN
GONE
HAD
VERBOS EN
INFINITIVO

4. RULES OF USAGE
SIMPLE PAST
• The simple past is used when
the time period HAS finished.
• The simple past is used when
giving older information.
• The simple past is used when
the time is clear.
• The simple past is used
with for and since, when
the actions have already
finished.
PRESENT PERFECT
• The present perfect is used
when the time period has
NOT finished.
• The present perfect is often
used when giving recent news.
• The present perfect is used
when the time is not specific.
• The present perfect is used
with for and since, when
the actions have not
finished yet.

5. TIME EXPRESIONS
SIMPLE PAST
• yesterday
• ... ago
• in 1990
• the other day
• last ...
PRESENT PERFECT
• just
• already
• up to now
• until now / till now
• ever
• (not) yet
• so far
• lately / recently