We use the present perfect to say that an action happened at an unspecified time before now. The exact time is not important.
Form: [has/have (+) past participle]
The present perfect is a verb form which links the past and present. We use it when we talk about an action or state which started in the past and which continues up to the present time.
You cannot use the present perfect with specific time expressions such as:
- Yesterday.
- One year ago.
- When I was a child.
- When I lived in ...
- At that moment.
- That day.
We can use the present perfect with unspecific expression such as:
- Ever.
- Never.
- Once.
- Many times.
- Several times.
- Before.
- So far.
- Already.
- Yet.
I have seen that movie twenty times.
I think I have met him once before.
There have been many earthquakes in California.
People have traveled to the Moon.
Nobody has ever climbed that mountain.
People have not traveled to Mars.
Have you read the book yet?
Video
Exercises
No comments:
Post a Comment