I’ve lost my keys.
The keys are missing now; the present result matters more than the exact time.
Vipengele vya msingi
Soma sentensi kwa vipande vya maana, si neno kwa neno.
Choose present perfect when the present connection matters and past simple when the finished time matters.
NOW
│
PRESENT PERFECT │ a bridge to now
past event ───────┘ result / experience / still true
I’ve lost my keys.
Have you ever worked abroad?
PAST SIMPLE a pin in finished time
past event ●──────── yesterday / in March / ago / when?
I lost my keys yesterday.
I saw it in March.
When did you arrive?
Use present perfect for a past event linked to now; use past simple when you point to a finished past time.
I’ve lost my keys.
The keys are missing now; the present result matters more than the exact time.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I lost my keys yesterday.
Yesterday is a finished time, so the past simple is natural.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
She has broken her arm.
The broken arm affects the present, so the present perfect fits.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
She broke her arm last winter.
Last winter is finished, so the past simple is used.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I saw it in March.
The exact time is important, so use the past simple.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
Have you sent the email?
The speaker wants to know whether the email is sent now.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I haven’t sent it yet.
Yet keeps the time window open, so present perfect is natural.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
Did you send the email?
This asks whether the action happened, often in a finished situation or time.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I didn’t send it yesterday.
Yesterday is finished, so past simple negative is required.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I’ve left my phone at home.
The focus is that the speaker does not have the phone now.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I left my phone at home this morning.
The sentence focuses on when the action happened.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
Have you ever worked abroad?
Ever asks about any time in the person’s life before now.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
We haven’t had lunch yet.
Yet shows that the time window continues up to now.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
He called two days ago.
Ago normally goes with the past simple, not the present perfect.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I’ve had three meetings today.
The speaker is inside the same day and counts experience up to now.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I’ve lived here for three years.
The speaker still lives here.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I lived there for three years.
The speaker no longer lives there, or is discussing a completed period.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
I have seen him yesterday.
A finished-time word like yesterday cannot normally be used with the present perfect.
I saw him yesterday.
Use past simple with yesterday.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
When did you arrive?
For a completed arrival, use past simple after when.
Soma sentensi kwa vipande vya maana, si neno kwa neno.
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