1. From past to the present…
Computer Age
From past to the present…

2. Past Present From the past until now Computers have changed a lot.
We all have computers at home.
Computers are smaller now.
Schools have bought many computers.
The first computer appeared in 1946
Companies adopted them in the 1960s.

3. Simple Past Simple Present Present Perfect
To go – went – gone
Simple Past
Simple Present
went
appeared
gave
invented
created …
go /goes
are
have
live(s)
work(s) …
Present Perfect
have gone
have played
have given
have invented
have created

4. to go – went – gone to be – was – been
I have + pp
You have + pp He
She has + pp It We
You have + pp
They
Os computadores têm mudado muito. (change)
Computers have changed a lot.
Computers …
A evolução tem sido contínua.
Evolution has been continuous.
Evolution …

5. Have you ever + pp ? Já alguma vez…
Have you ever had a car accident?
Yes, I have / No I haven’t.
Have you ever won a competition?
Have you ever broken a leg?
Have you ever driven a car?
Have you ever been in hospital?

6. Simple Past or Present Perfect ?
launched
Apple ___________________ (launch) the iPad in 2010.
They ___________________ (launch) three models since 2010.
_________ you __________ (see) the most recent model?
Apple ___________________ (sell) 1 million iPads on the first day.
have launched
Have
seen
sold

7. Simple Past or Present Perfect ?
That day thousands of people _________________ (wait) outside the stores to get it.
They ___________________ (sell) 55 million iPads until now.
_________ you ever__________ (use) one of them?
No, I ___________________ (not have) the chance to get one yet.
waited
have sold
used
Have
haven’t had

8. Simple Past or Present Perfect ?
died
Apple head, Steve Jobs, __________ (die) last year.
He _______________ (take) control of Apple in 1997.
Apple ___________________ (become) one of the most powerful companies ever.
took
has become

9. studied left buried gone dropped wanted decided taught scrapped fallen
burnt
wrote
got
sworn
been
eaten
produced
changed
damaged
caught
broken
supplied
driven
ridden
seem
danced
studied
left
buried
gone
dropped
wanted
decided
taught
scrapped
fallen
loved
stayed
done
died

10. still /yet/already It’s 11 o’clock and Pedro is still in bed.
It’s 10 o’clock and Pedro hasn’t got up yet!
I’m hungry. Is dinner ready yet?
It’s 9 p.m. and Pedro is already in bed.

11. never / ever / so far
Have you ever tried to kick the ball with your left foot?
No, I have never tried that so far.

12. Just They have just got married. They have just left the church.
They have just started their honeymoon.

13. Exercises ever never yet still yet
Have you ___________been to England?
No, I've _____________been there.
I haven't seen John ________. Is everything OK with him?
The students __________haven't been told about the test.
I haven't told the students about the test ______.
ever
never
yet
still
yet

14. Exercises never /already He has ____________ sent me an e- mail.
He said he would be here at 10 o'clock but he __________hasn't come .
I have done four exercises __________. And you?
It hasn't stopped raining __________.
still
already
yet

16. Exercises
has worked
Mr Clark _____________ (work) in this office for 15 years. Everybody loves him .
Molly lives in Dublin. She _______________(live) there all her life.
When we were on holiday, the weather ____________(be) awful.
My grandfather ___________(die) 20 years ago. I ________________(never / meet) him.
I don't know Carol's husband. I _______________(meet) him yet.
has lived
was
died
have never met
haven’t met

17. lost have lost have you done Have you ever been has had
Last year I _______(lose) my passport.
I can't find my passport. I think I _____________(lose ) it.
You house looks so different!! What ________________(you / do) ?
__________________(you / ever/ be ) here ?
My teacher ____________(have) a black Ford for as long as I know her.
lost
have lost
have you done
Have you ever been
has had

18. has seen arrived didn’t go started has already seen saw have been
Nobody _______________(see) the boss yet. He ____________(arrive) late for work this morning.
Ruth ______________(not/ go) out with Tom since she ____________(start) working.
I ________________(already/see) that film but I can't remember when I ___________(see) it.
Bob and Alice are married . They ______________(be) married for 20 years.
has seen
arrived
didn’t go
started
has already seen
saw
have been