If I will write an instruction for passport holders about what to do in case a passport is already expired using an
if conditional, will using
if...had be wrong?
If your passport had expired, you would have to renew.
Based on what I understood so far,
if...had (past perfect tense) is used for
past-unreal construction. So using
had is good if it is not true that the passport is already expired. But what if it is possible that the passport is already expired? Would this sentence be correct?
If your passport has expired, you would have to renew.
I thought about using
has expired (present perfect tense) since it's possible that the passport expired some time in the past and until now it is still expired. If this is correct, since it's not
past-unreal because it uses present perfect tense, what will it be called?
There is also a simple past version:
If your passport expired, you would have to renew.
However, this could also refer to a passport that expired at least once in the past (e.g. expired some time in the past but renewed and not expired anymore in the present).
It is possible that there are better alternative sentences but I would like and need help to analyze the sentences I gave to see if they can work without the need to rephrase them. If there is no choice but to rephrase them, then I would love to see the alternative.