Must have to know vs Must have know

The correct phrase is "must have known." Both "must have to know" and "must have know" are incorrect. The correct form uses the past participle "known" after the modal verb "must have."

Last updated: April 05, 2024 • 203 views

This phrase is not correct in English. The combination of "must have" followed by "to know" is not grammatically accurate.

"Must have to know"

This phrase should be avoided. Instead, use the correct form "must have known" to express that something was necessary to be aware of in the past.

Show examples from the web [+]

Must have to know
Information: the operative research of all necessary data, the fundamental point: today the term "information" no longer simply means "piece of information", but a complex of knowledge that an organism must have to know itself and to self-organize.
The families of these servicemen must have wanted to know what was happening.
So must have got to know him pretty well.
You must have got to know him quite well over the years.
By now, all of Vegas must have come to know...
It must have killed you to know that the counterfeiters were getting rich selling knock-offs of your work.
Patients must have the right to know the origin of any cells or tissues used, subject to respect for donor anonymity.
Living here you must have got to know her kids pretty well?
It is money that belongs to our citizens, and they must have a right to know what it is being spent on.
Each individual consumer must have the right to know whether there are any dangerous chemicals in the goods that he or she purchases.
Must have been too drunk to know the difference.
Mrs. Waters, the situation you were in, it must have been very difficult to know what to do.
The most important thing is that people absolutely must have the right to know and to make their own choice about the food they eat.
EU citizens must have the right to know the place of origin and quality level of products and textiles that they purchase.
"You must have traveled a lot to know all those things."
Can you imagine how bad it must have been inside to know that jumping would have been the better way out?
That means that the consumer must have the right to know how the corn and the soya that he eats is produced.
Can you imagine how it must have crushed Joseph to know that in spite of all his efforts his brothers still doubted his love?
Unfortunately, however, even the Holocaust could seem unbelievable, and yet it happened without disturbing the sleep of those who must have had the means to know or intervene and yet did not do so.
Believes that consumers, including farmers, must have the right to know how foodstuff and animal feed have been produced and that labelling is particularly important in this regard;

This phrase is also incorrect in English. The correct form requires the past participle "known" after the modal verb "must have."

"Must have know"

Avoid using this incorrect phrase. Use the correct form "must have known" to convey that something was necessary to be aware of in the past.

Show examples from the web [+]

You must have know I'd do something like this.
Yes. You must have know how she would react if she were to return here.
You must have more know how many friends here.
We must have faith, know how to wait with the prayer.
The families of these servicemen must have wanted to know what was happening.
So must have got to know him pretty well.
She must have had who knows how many owners and people tinkering around inside her.
You must have got to know him quite well over the years.
By now, all of Vegas must have come to know...
It must have killed you to know that the counterfeiters were getting rich selling knock-offs of your work.
Right, well then Felicia or someone she knows must have kept a cat.
The air navigation service providers concerned must have the requisite technical know-how.
Patients must have the right to know the origin of any cells or tissues used, subject to respect for donor anonymity.
Because that must have been, you know, awkward.
She must have thought, you know, some friend of hers was calling her.
In a 1980 interview with Playboy magazine, John Lennon expressed his doubts about the notion of subconscious plagiarism, saying: He must have known, you know.
It is money that belongs to our citizens, and they must have a right to know what it is being spent on.
Each individual consumer must have the right to know whether there are any dangerous chemicals in the goods that he or she purchases.
I believe that by his second shipwreck, Paul must have thought, I know the Lord abides in me.
'But she must have a prize herselfyou know' said the Mouse.

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Must have to know vs Must have know

"Must have to know"

"Must have know"

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