assumption of + clause

[Mkostya]

Hi,

is it possible to say : I have an assumption of something be something else?

For example, there is an assumption of coupling capacitance be proportional to ...
Or it's better to say : there is an assumption that coupling capacitance is proportional ...

[Mister Micawber]

You cannot use the first ('be') form here.
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Native English teacher at Mister Micawber's

[Mkostya]

Thanks!

Can you explain me when such construction are possible in general?

[Mister Micawber]

Generally, this 'be' structure -- it's subjunctive-- requires a 'that' dependent clause and a verb, adjective or other form of request, demand, insistence, etc, in the main clause:

It's necessary that the cat be fed daily.
He begged that his child be released from jail.
They suggested that we be quiet in the museum.

Is that what you are asking about, Mkostya?
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Native English teacher at Mister Micawber's

[Mkostya]

Thank you very much!

So, the correct form is "there is an assumption that coupling capacitance BE proportional..." ?

[Mister Micawber]

I don't think that verb is in the list, Mkostya-- at least 'is' sounds much better to me.
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Native English teacher at Mister Micawber's