Diferenças entre o Present Perfect e o Simple Past
O simple past é usado com alguma palavra/expressão que denote tempo definido, tais como yesterday, in 1945, last year, etc.
I saw Paula yesterday.
We didn´t have a holiday last year.
Também se usa o simple past com os interrogativos When e What time:
When did you go?
What time did she arrive?
E com a palavra ago:
They met 5 years ago.
Se não houver tempo definido, use o present perfect:
Have you ever seen a camel?
Has she got dressed yet?
Exercises:
I. Complete with the Simple Past or the Present Perfect:
Jill is in Ireland. She ____________(be) there for 3 weeks.
Susan ________(start) her job 3 weeks ago.
Where _______ (be) you on Sunday afternoon?
William Shakespeare __________(live) from 1564 to 1616.
What time ______they__________(get) to the station?
I ____________(learn) English since I was a child.
I ________(live) in London since last year.
When _______John ________(meet) Susan?