expressing duration Presposition of time Since and For
We use since and for
with the present perfect continuous tense.
i)
FOR
Is the preposition
which used to talk about the length of time (duration).
We use preposition
present perfect tense with For + A period of time.
Thus
|
For + A period of time
|
Examples
For a week
For six months
For two hours
For a year
ii)
SINCE
Is the presentation
which is used to talk about the starting point of time.
We use present perfect
continuous tense with Since + A period of time
Thus
|
Since + A period of time
|
Examples
Since this morning
Since last week
Since yesterday
Since I was twelve
years old
More examples for since
and for
1.
I have here for
20 minutes.
2.
I have been here
since 9 O’clock.
3.
John has not
called for six hours.
4.
John has not
called since January.
EXERCISE
Fill the blanks by
using since and for
1.
Mariam and Musa
have not met their teacher ______ last week.
2.
They are on a
trip since ______ December 28th last year.
3.
He has remained
absent _____ many days.
4.
The manager has
been waiting _____ two hours.
5.
My teacher was
there _____ 1978.
EXERCISE: USES OF SINCE AND FOR
Fill in the blanks by
using the correct preposition from the brackets.
1.
I have been
learning English _____ I was in class one. (for, since, at, by)
2.
He has been
living Arusha _____ 1984 (since, for, at, by)
3.
Eliud and Mariam
have been best friends _____ class four. (after, during, while, since)
4.
He has been sick
_____ the day they arrived. (since, for, at, in, on)
5.
We have been
waiting ____ over ten minutes. (since, for, at, in, on)
6.
He is lazy, he
failed his exams ____ several times. (for, until, over)
Re-write using “since”
7.
I have been sick
for two years.
I have been sick
since last year.
8.
It started
raining last night. It is still raining
It has been raining
since last night.
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