AB Present Perfect
Transcript of AB Present Perfect
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Present Perfect, Past
Perfect,& Future Perfect
February 1, 2011
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Something happened (or never happened) before now,
at unspecified time in the past.
[has/have + past participle]
Present Perfect
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They have moved into a new apartment
I have neverseen snow.
For Example
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Ever, Never, Already, Yet,
Still, & Just
are frequently used with the present perfect.Describe your experience
Have you evercelebrated Halloween?
I have driven many times in the past month.
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Since or for since +a particular time
for +a duration of time
We often use since or for to expresses a situation
that began in the past and continues to the present
I have been here sinceseven oclock.
I have lived in Vancouverfor 2years.
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Check if task is completed
Still waiting for the action to happen.
Have you eaten your lunch?
Yes, I have eaten my lunch.
No, I havent eaten it yet.
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Multiple Actions at Different Times
To talk about several different actions which
have occurred in the past at different times.
The army has attacked that city five times.
I have had four quizzes and five tests so far this
semester.
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Active / Passive
Many tourists have visited that castle.Active
That castle has been visited by many tourists.Passive
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Present Perfect Continuous
[has/have + been + ~ing]
You have been waiting here for two hours.
Have you been waiting here for two hours?
The tense express the duration of an activity thatbegan in the past and continues action to the present.
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Past Perfect
[had + past participle]
I had neverseen such a beautiful beach before I went to Saipan.
I did not have any money because I had lost my wallet.
We are talking about two different events at twodifferent times in the past.
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We had had that car for ten years before it broke
down. By the time Alex finished his studies, he had been
in London for over eight years
We talk about something started in the past and continued
another in the past.
Duration Before Something in the Past
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She had visited her Japanese relatives once in
1993 before she moved in with them in 1996.
Specific Times with the Past Perfect
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If the Past Perfect is not referring to an
action at a specific time
She neversaw a bear before she moved to Alaska. Not Correct
She had neverseen a bear before she moved to Alaska.Correct
You had previously studied English before you movedto New York.
Had you previously studied English before you moved
to New York?
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Active / Passive
George had repaired many cars before he
received his mechanic's license.Active
Many cars had been repaired by George before he
received his mechanic's license.Passive
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Past Perfect Continuous
[had been + ~ing]
She had been working at that company for three
years. She had been working at that company for three
years when it went out of business.
Something started in the past and has continued up until anothertime in the past.
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Future Perfect
Something will happen before a specific time in the
future.
[will have + past participle]
The train will leave the station at 9am. You will arrive atthe station at 9.15am. When you arrive, the train will have
left.
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Future Perfect Continuous
[will have been + ~ing]Something will continue up until a particular event time in
the future.
You will have been waiting for more than two hours
when her plane finally arrives.
He will be tired when he arrives. He will have been
travelling for 24 hours..
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Adverb Placementalways, only, never, ever, still, & just.
You willonlyhave learned a few words.
Will you onlyhave learned a few words?
You are only going to have learned a few words.
Are you only going to have learned a few words?
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Active / Passive
They will have completed the project before thedeadline.Active
The project will have been completed before the
deadline.Passive
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Summary
Present Perfect describes unspecific time in the
past before now.
Past Perfect is talking about two different events
at two different times in the past.
Something happened before a specific time in the past.
Future Perfect shows something will happen
before a specific time in the future.
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Reference
http://www.englishpage.com/verbpage/presentp
erfect.htmlEnglish Grammar by Betty Schrampfer Azar
edurizon.com/about-2/my-delta-assignments/
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