Here's a quick reminder of the nine main tenses in English:
Present Perfect Tense
If you have trouble understanding and using the present perfect tense - don't worry! You're not alone. This week I will offer some tips on this tense and how to improve your knowledge of it.
1. Time Words HelpIt is helpful to remember a few
time words that usually go with either present perfect tense, past tense, or both. You can think of them as three groups:
Group 1:so far, already, for + period of time, since + fixed time, yet, lately>These time words often use present perfect tense to indicate indefinite (or unfinished) time.
Group 2:recently, just, always, never, ever, in the past, until now, today>These time words use both present perfect and past tense depending on the situation.Group 3:ago, last week, yesterday, during> These time words nearly always use past tense to indicate definite (or finished) time. Some examplesGroup 1:So far today I have ironed twenty-five shirts and I'm exhausted!I have already prepared my speech for the meeting tonight. I have known Jim since I was a child.I have known Sue for twelve years.I have yet to see a good film this year. (or: I have not seen a good film this year yet.)Lately there has been a slight increase in the temperature.In all these examples, time is indefinite.
Group 2:Recently I met an interesting artist. I've met lots of interesting people recently.The first sentence uses past tense as the time of the event (the meeting) is definite. The second example uses present perfect as the time is indefinite. Note: the position of 'recently' does not make much difference to the tense used.
I always wanted to meet her.I have always wanted to meet her.The first sentence uses past tense as the event (wanting) is placed in definite time. Maybe it is now impossible to meet 'her'. In the second sentence present perfect tense is used as the event (wanting) is open and indefinite. I always wanted to meet her - and I still do.
I saw him earlier today.I've seen him today.The first sentence uses past tense as the event (seeing) is the most important thing and is placed in definite time. 'Earlier today' is seen as finished time. The second sentence uses present perfect as 'today' is also important and is not finished. So the present perfect indicates indefinite time.
Group 3:I arrived here twelve years ago.I had a day off yesterday.Last week saw a big increase in airport traffic.During the night I heard a strange noise outside in the garden.In all these examples, time is definite and finished.
Note: 'Last week' usually needs past tense. However, 'the last week' or 'in the last week' (with an article) usually need present perfect.
In the last week we have seen a big increase in airport traffic.'The previous week' needs past tense:
The last week has been busy; but the previous week was quiet.Note: 'since + fixed time' usually needs present perfect. But remember that since can also be used with a verb in the past tense:
I have known Sue since 1989.
Since I met Bob my life has never been the same.In the second sentence, 'since I have met Bob' would not be correct as the event (meeting Bob) is finished in the past.
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Just in TimeThe good news is that in everyday conversation people often mix present perfect and past tense. It does not always matter which one you use. There is often only a small difference between them. Example:
Did you pour me that drink?I just did it. / I have just done it.Is there a difference? Not really. Maybe the second sentence is slightly more recent. 'Just' can go with both tenses.