The document discusses the use of the present perfect tense with for and since. It explains that the present perfect is used to talk about an action that started in the past and continues to the present. It notes that "for" is used with a period of time, like years or hours, while "since" is used to indicate when the action started, like a specific date or time. The document provides examples of using the present perfect with for and since and an exercise for readers to identify whether sentences should use "for" or "since" based on the time references.

1. PRESENT PERFECT TENSE
WITH FOR AND SINCE
Adriana Vărzaru

2. WHEN IS IT USED?
 We use Present Perfect tense to talk about action
which started in the past and continues up to the
present.
 Examples
I have had this computer for about a year.
How long have you been at this school?
I haven't seen Julia since September.

3. FOR OR SINCE
 We use for with a period of time, for example: a
few days, half an hour, two years.
 We use since with the time when the action
started, for example: last year, June 8, I met you.

4. EXERCISE. DO WE
USE FOR OR SINCE WITH THE
FOLLOWING TIME REFERENCES?
I haven't phoned home Christmas.
We've been here nine o'clock.
I have worked for International House more
than eight years.
I haven't visited my home town I left school.
I haven't been to the cinema ages.
I have studied non-stop 9.15.
I have had a driving licence I was eighteen.
She hasn't had a day off 1999.
Johan has been in England more than two
weeks now.

5. NOTE:
For and since can both be used with the past
perfect.
Since can only be used with perfect
tenses, for can also be used with the simple past.