not sure how often vs not sure that how often

The correct phrase is "not sure how often." The addition of "that" before "how often" is unnecessary and incorrect in this context.

Last updated: March 29, 2024 • 737 views

This phrase is correct and commonly used in English.

"not sure how often"

This phrase is used to express uncertainty about the frequency of something happening.

Examples:

I'm not sure how often they visit their grandparents.
She's not sure how often the bus comes by this stop.
We're not sure how often the company holds these events.
He's not sure how often he should water the plants.
They're not sure how often they should exercise.

Show examples from the web [+]

I'm not sure, they often cross paths when he goes to throw out the trash and he's in love
To be sure, structural reforms often favor policies like labor-market flexibility.
The refrigerating system is faulty, so make sure to check it often.
I am sure it's often thought the van der Luydens' is gloomy... though I've never heard it said before.
I'm sure the same has often been said about me.
Nowthatyouknowtheway, Come and visit us often... sure footers.
Sure, I often sing it at the karaoke
I'm not sure how deep that goes.
Not sure how much longer we can hold it together.
Mr President, Commissioner, I am sure that your services often explain to you that certain necessary measures for climate change cannot be taken and applied.
I'm not sure how relaxing it was.
I'm still not sure how we figure into this investigation.
We're not sure how accurate that is.
I'm not sure how to do that.
Not sure how long I was held there.
I'm not sure how the girl fits.
I'm not sure how much more we can do.
Not sure how many kids there are.
I'm not sure how big it was.
Not sure how long she was under the water.

This phrase is incorrect in English.

"not sure that how often"

Show examples from the web [+]

Mr President, Commissioner, I am sure that your services often explain to you that certain necessary measures for climate change cannot be taken and applied.
I'm not sure, they often cross paths when he goes to throw out the trash and he's in love
To be sure, structural reforms often favor policies like labor-market flexibility.
The refrigerating system is faulty, so make sure to check it often.
I am sure it's often thought the van der Luydens' is gloomy... though I've never heard it said before.
Together, we have succeeded in adapting the 2002 budget to these new challenges and given how often the European Union is criticised, we should make sure that this positive outcome is heard loud and clear.
I'm sure the same has often been said about me.
Nowthatyouknowtheway, Come and visit us often... sure footers.
Sure, I often sing it at the karaoke
Not sure that principle applies here.
I'm not sure-I'm not sure that happened.
I'm not sure that you could.
I'm not sure that applies here but...
I'm not sure that's much of an upgrade.
I'm not sure that I'd mind anymore.
Though, honestly, I'm not sure that story is appropriate.
I am not sure that Austrian farmers would like that to happen.
Therefore, I'm not sure that he should be executed.
I am not sure that you have asked a question.
And not sure that the Scottish alliance was a good one.

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not sure how often vs not sure that how often