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PRESENT PERFECT WITH FOR AND SINCE
We use the present perfect with for and since to talk about actions or situations which started in the past and continue into the present (дії почалися в минулому часі і все ще продовжуються в теперішньому часі):
I've known Rachel since 2008. (= I still know her.)
Robert has lived here for five years. (= He still lives here.)
Remember:
If the action is finished, we must use the past simple:
Shakespeare lived in London most of his life. (= he is dead so the action is finished)
I worked with Kerry between 2005 and 2007. (= this period is finished)
Compare with the present perfect.
I’ve lived in London for five years. (= I still live in London)
I’ve worked with Kerry for ages. (= I still work with Kerry)
for / since
• We use for with a period of time (the length of the time the action has taken):
for + twenty minutes / three months / thirty years / most of my life / a long time / ages
Dan’s worked in the company for seventeen years. I’ve been ill for a few days.
• We use since with a point in time (when the action started):
since + 2005 / Monday / last winter / her birthday / yesterday / I was a child
I’ve been in this class since last September. We’ve had this car since 2006.
Questions with How long ... ?
• We can use for and since to answer the question How long ... ?:
'How long have you had this watch?' 'Since my birthday.'
'How long have you worked here?' 'For five years.'
• We can also use for and questions with How long ... ? in the past simple to refer to actions or situations which happened in the past and are now finished (дії почалися в минулому часі і закінчилися в минулому часі):
'How long were they married?' 'They were married for twenty years'. (= they're not married now → past simple)
'How long have they been married?' They've been married for twenty years'. (= they're still married → present perfect)
Time expressions for the recent past
• We can use the present perfect with the following time expressions which refer to the recent past: lately, recently, in the last few days:
I haven't seen her recently.
Have you seen any interesting films lately?
I have read 200 pages of this novel in the last few days.
• We can also use phrases like all day, all week, all my life with the present perfect to describe unfinished actions:
I have lived in this town all my life. My friend has been ill all week.
• We use the past simple with other time expressions which refer to the recent past: not long ago, a minute ago:
I visited Barcelona not long ago.
I saw them just a minute ago.