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PRESENT PERFECT SIMPLE

(FOR AND SINCE)

Present perfect can define a period of time before now by considering its
period or duration.

With for + a period of time, or considering its starting point, with since
+ a point in time.
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.

Examples :

For + a period of time Since + a point in time

i. For six years I. Since this morning
ii. For a week II. Since last week
iii. For a month III. Since yesterday
iv. For hours IV. Since I was a child
v. For two hours V. Since Wednesday
vi. I have worked here for five VI. I have worked here since
years. 1990.

Present Perfect with FOR and SINCE:

Present Perfect with FOR Present Perfect with SINCE
a) She has lived here for twenty A. She has lived here since 1998.
years. B. We have taught at this school
b) We have taught at this since 2000.
school for a long time. C. Alice has been married since
rd
c) Alice has been married for March 3 .
four months. D. They have been at the hotel
d) They have been at the hotel since last Wednesday.
for two days.