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The present perfect has 4 main functions…
When do we use the When do we use the present perfectpresent perfect??
Function 1Function 1
We use the present perfect ….For actions that were completed in the past. The exact time of the action is unknown. We are interested in the results of the action in the present.
He has broken his legHe has broken his leg
He has broken his legHe has broken his legDo we know when he Do we know when he
broke his legbroke his leg??NONO
But because he broke his leg But because he broke his leg he can’t walk nowhe can’t walk now……
He broke his He broke his legleg
The The action action was in was in
the the PASTPAST
He can’t walk He can’t walk nownow
The The result is result is in the in the
PRESENTPRESENT
Function 2Function 2
We use the present perfect….For actions that were repeated several times in the past.
She has visited Canada many times.
Function 3Function 3
We use the present perfect…
For actions and situations that began in the past and continue to the present.
I have not smoked since 1995.
Function 4
We use the present perfect
To describe something that has JUST happened.
I have just spilled my coffee on my dress!
I have not smoked I have not smoked since 1995since 1995..
This means that I stopped smoking This means that I stopped smoking in 1995 and I still don’t smoke in 1995 and I still don’t smoke
today.today.
What happened in
the past
continues to the present
He has broken his leg.He has broken his leg.
She has visited Canada many She has visited Canada many times.times.
I have not smoked since 1995.I have not smoked since 1995.
What is the same in all of these? Can What is the same in all of these? Can you find the patternyou find the pattern??
subject
subject
subject
helping verb
helping verb
helping verb
V3
V3
V3
Present perfect formPresent perfect form
Subject + have/has + V3Subject + have/has + V3
I
You
He
She
It
We
They
havehave
havehave
hashashashashashas
I’veI’ve
You’veYou’ve
We’veWe’ve
They’vThey’vee
V3: The perfect formV3: The perfect form
was/werewas/were beenbeen
ateate eateneaten
bebe
eateat
V1V1 V2V2 V3V3
The negative form of the The negative form of the present perfectpresent perfect
In order to make a present perfect sentence negative, we just a “not”
after the helping verb but before the V3…
Negative contractionsNegative contractions
I have not I’ve notI’ve not
I haven’tI haven’t
She has not
She She hasn’thasn’t
Negative FormNegative Form
I’ve I’ve notnot been to Canada been to Canada..
She hasShe hasn’tn’t seen that seen that moviemovie..
We haveWe haven’tn’t flown there yet flown there yet..
Question form
As always, when asking a yes/no As always, when asking a yes/no
question, the helping verb comes question, the helping verb comes first….first….
Have you seen that film?
Has he seen that film?
Have/has + subject + Have/has + subject + V3V3
Time Expressions for the Time Expressions for the present perfectpresent perfect
for
sincelatel
y
justyet
Not yet
ever
already
recently
So what the heck So what the heck is the difference is the difference between the past between the past
simple and the simple and the present perfect present perfect
simplesimple??
The past simple and present The past simple and present perfectperfect
Present perfectPresent perfect: The action was : The action was
completed in the past but the results completed in the past but the results
of the action affect us now.of the action affect us now.
Past simplePast simple: Something that : Something that happened happened
in the past, refers to a fact.in the past, refers to a fact.
The past simple vs. The past simple vs. present perfectpresent perfect
There are specific time expressions that help
us note the differences:
Time expressions
Present perfect simple
(indefinite time)
forfor
sincesince
alreadyalready
justjust
yetyet
Past simple(specific time)
yesterdayyesterday
last monthlast month
last weeklast week
in the 1960’sin the 1960’s
ExamplesExamples::
1. The train ______________ (leave) a half hour ago.
2. I ______________ (not speak) to him yet this morning.
3. Yesterday, we ___________ (place) an ad in the paper to sell our car.
4. _________ (you/read) any books by Stephen King lately ?
left
have not spoken
placed
Have you read
How longHow long / WhenWhen
Another difference Another difference between the past between the past
simple and the present simple and the present perfect simple perfect simple
is the is the questionsquestions that they that they answer….answer….