1. Present perfect simple (have + past participle)
The subject is in possession of the completion of the action. Focus on the result and its logical, necessary consequence.
The completed action and its logical consequence
I've lost my keys (consequence: I can't get in)
Assessment (quantity, completed actions)
I have written three letters. They have won several awards for their research.
Experience acquired by the subject
I have visited Japan. (experience that is now part of me)
Explanation ("because")
I'm not ready. I've forgotten to take my wallet.
Breaking news ("hot news")
Kate has had a baby! (you can add just after have)
2. Present perfect be-ing (have been + V-ing)
Focus on the result of the ongoing activity (not its completion). Emphasis on the activity, its duration, and unexpected or contingent consequences. Always involves a degree of subjectivity from the speaker.
Unfinished (action still continuing)
They have been repairing the road for months. (it's not finished yet)
Temporary / unusual / exceptional situation
I've been living with my parents for the past few months.
Visible traces (side consequences)
Explanation / justification:
Your hands are covered in paint. I have been painting the fence.Deduction:
There is water everywhere. Have you been washing the dog?Accusation / reproach:
You smell of alcohol. You've been drinking!Recent event:
You've been watching the eight o'clock news.Subjective / critical comment (complaint, effort)
I've been waiting for hours! (I'm complaining, not just stating a fact)
3. The duel: simple vs be-ing
A. Completed vs unfinished
Simple They have repaired the road. (the road is now fixed) Be-ing They have been repairing the road. (still being repaired)
B. Permanent vs temporary
Simple My parents have lived in Bristol all their lives. Be-ing I've been living in Shirley's flat for the last month.
C. Necessary vs contingent consequence
Simple The birds have eaten the strawberries. (→ there are no strawberries left) Be-ing The birds have been eating the strawberries. (→ I'm upset / explaining why I'm putting a net on)
D. Quantity vs duration (the focus)
Simple I've read 3 books. (counting completed actions) Be-ing I've been reading since 8 AM. (focus on time spent)
E. Neutral vs subjective
Simple I've waited for an hour. (neutral information: 60 minutes) Be-ing I've been waiting for an hour! (complaint: I'm fed up)
4. Present perfect vs past simple
A. Past simple (break from the present)
Focus on the circumstances of the past event, recontextualized at the moment it occurred.
Markers: yesterday, ago, last week, in 1998, when…?, at [time]
He wrote 15 novels. (deceased person — it's closed) Did you see the exhibition? (finished exhibition) How long did you live in Birmingham? (no longer lives there)B. Present perfect (link with the present)
Something from the past has current relevance for the subject.
Markers: so far, since, lately, already, yet, ever, just
He has written 15 novels. (living person — he can continue) Have you seen the exhibition? (ongoing exhibition) How long have you lived in Birmingham? (still lives there)C. The case of "for"
Present perfect I have lived here for 2 years. (still live here) Past simple I lived there for 2 years. (no longer live there)
5. Golden rule
You cannot use be-ing with a specific number of finished/completed objects.
✅ I have been writing. (no end, no counting) ✅ I have written two letters. (counting = simple) ❌ I have been writing two letters. (incompatible)Exception:
✅ I have been writing two difficult letters. (the difficulty makes the action open-ended)