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Present perfect

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marinieves esp

on 7 June 2017

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Transcript of Present perfect


You CANNOT use the Present Perfect with specific time expressions such as: yesterday, one year ago, last week, when I was a child, when I lived in Japan, at that moment, that day, one day, etc.
Use for...
We use the Present Perfect to say that an action happened at an unspecified time before now.
Form
has/have + past participle
Experience
The Present Perfect is NOT used to describe a specific event.
Change over time
Used to talk about change that has happened over a period of time.
An uncompleted action you are expecting
Used to say that an action which we expected has not happened. Using the Present Perfect suggests that we are still waiting for the action to happen.
Multiple actions at different times
Used to talk about several different actions which have occurred in the past at different times. Present Perfect suggests the process is not complete and more actions are possible.
Present perfect
The exact time is not important.
We CAN use the Present Perfect with unspecific expressions such as: ever, never, once, many times, several times, before, so far, already, yet, etc.
Example
You have seen that movie many times.
Have you seen that movie many times?
You have not seen that movie many times.
Example
I have been to France.
This sentence means that you have had the experience of being in France. Maybe you have been there once, or several times.
I think I have seen that movie before.
He has never traveled by train.
Example
You have grown since the last time I saw you.
The government has become more interested in arts education.
My English has really improved since I moved to Australia.
Example
James has not finished his homework yet.
Bill has still not arrived.
The rain hasn't stopped.
Example
The army has attacked that city five times.
I have had four quizzes and five tests so far this semester.
We have had many major problems while working on this project.
Accomplishments
Used to list the accomplishments of individuals and humanity. You cannot mention a specific time.
Example
Man has walked on the Moon.
Our son has learned how to read.
Scientists have split the atom.
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