Need some more help

[Anonymous]

Thanks to Francois & tdol for my last problem with prefixes.
Gotta a new one for you.
"It wouldn't be of any use"
Why of? What's the structure?
Can you give me another phrase using "of" in the same way?
Or is it just a phrase that you have to remember?

I hate Engrish。。
Gotta stop trying to teach it.
Too many unanswerable questions from students.

[Tdol]

'Use' here is a noun, not a verb, which is why we use the proposition.

It wouldn't be of any great importance...

[Francois]

"The electronic document could not be of any legal value."
"Those suspicious fund transfers may be of some interest to the SEC"

FRC