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http://www.manhattan.edu/student_life/international-student-services/international-student-faq
I lost my passport. What should I do?
File a police report, notify your country’s consular office, and let the ISA office know as soon as possible.

Is I lost my passport correct? Is "I've lost my passport" wrong?
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Hi,
HUBLOTIs "I lost my passport" correct?
OK.
HUBLOTIs "I've lost my passport" wrong?
OK, too.

Regards
Comments  
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Thank you, Regards.

Do "I lost my passport" and "I've lost my passport" mean the same thing?

- I've lived here for three years.
- I lived here for three years.
Do these sentences mean the same thing?
There is a difference in meaning between the simple past and the present perfect.
But that does not mean that there are no situations in which both meanings can make sense.
In fact, quite often there is nothing in the situation that demands that you use only one of these.

If, however, you mention a specific time when something happened, you must use the simple past.

You can say
I've lived here for three years.
But you can't say
When I was a child I've lived here for three years.
You've mentioned a certain time when this three-year period occurred, so you have to say
When I was a child I lived here for three years.

CJ
Thank you, CJ.
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