differences between Past Simple and Present Perfect with examples

1. PRESENT PERFECT vs. PAST
SIMPLE

2. PRESENT PERFECT
An action that happened in an unspecified moment in
the past
Expressions: ever, never, once, many times, several
times, before, etc.

3. PAST SIMPLE
An action started and finished at a certain time in the
past, even if the time is not mentioned.
We use it to list a series of actions in the past.
Expressions: for two years, for ten minutes, all year,
all day

4. Examples
Present perfect Past simple
You have seen the movie He lived in Brazil for five
many times. years.
I think I have met once They sat at the beach all
before. day.
Nobody have ever We talked on the phone
climbed that mountain. for an hour.