I am not sure what problem it was vs I am not sure what problem it has

Both phrases are correct, but they are used in different contexts. 'I am not sure what problem it was' is used when referring to a past event or situation, while 'I am not sure what problem it has' is used when talking about a current or ongoing situation.

Last updated: March 24, 2024 • 2673 views

I am not sure what problem it was

This phrase is correct and commonly used when referring to a past event or situation.

This phrase is used to express uncertainty about a problem that occurred in the past.

Show examples from the web [+]

I am not sure he's the problem.
I am not sure what happened.
I am not sure what I have accomplished coming here.
I am not sure what you want.
I am not sure what would interest you.
I am not sure what we have there geshehen.
I am not sure what she has.
I am not sure what damaging and almost destroying the Central Bureau of Statistics in the Palestinian territories has to do with rooting out terrorism.
I am not sure what destroying the Land Registry has to do with rooting out terrorism.
A great deal needs to be done there, so much so that I am not sure what the exact outcome will be.
I am not sure what I can do as regards the buildings aspect, but you have my sympathy.
I am not sure what the honourable Member means by the word 'proliferation'.
I am not sure what relation this has with the proclamation of independence of Kosovo, with which you seem to agree.
Without hearing who was in favour and who was against, I am not sure what was decided.
I am not sure what the United States would say about that.
The programmes are supposed to be launched on 1 January 2007, and so I am not sure what the Commission is waiting for.
Madam President, I am not sure what to make of this citizens' initiative.
I am not sure what the losses amount to in euros, but 12 billion pesetas is certainly a lot of money.
I am not sure that would solve the problem.
Okay, I'm... not sure what your problem is, but this is the only all-night place around, and I need a vanilla milkshake.

Alternatives:

I am not sure what the problem was
I am unsure about what problem it was

I am not sure what problem it has

This phrase is correct and commonly used when talking about a current or ongoing situation.

This phrase is used to express uncertainty about a problem that is currently present or ongoing.

Show examples from the web [+]

I am not sure he's the problem.
I am not sure what happened.
I am not sure what I have accomplished coming here.
I am not sure what you want.
I am not sure what would interest you.
I am not sure what we have there geshehen.
I am not sure what she has.
I am not sure what damaging and almost destroying the Central Bureau of Statistics in the Palestinian territories has to do with rooting out terrorism.
I am not sure what destroying the Land Registry has to do with rooting out terrorism.
A great deal needs to be done there, so much so that I am not sure what the exact outcome will be.
I am not sure what I can do as regards the buildings aspect, but you have my sympathy.
I am not sure what the honourable Member means by the word 'proliferation'.
I am not sure what relation this has with the proclamation of independence of Kosovo, with which you seem to agree.
Without hearing who was in favour and who was against, I am not sure what was decided.
I am not sure what the United States would say about that.
The programmes are supposed to be launched on 1 January 2007, and so I am not sure what the Commission is waiting for.
Madam President, I am not sure what to make of this citizens' initiative.
I am not sure what the losses amount to in euros, but 12 billion pesetas is certainly a lot of money.
I am not sure that would solve the problem.
Okay, I'm... not sure what your problem is, but this is the only all-night place around, and I need a vanilla milkshake.

Alternatives:

I am not sure what the problem is
I am unsure about what problem it has

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I am not sure what problem it was vs I am not sure what problem it has