"cannot be presumed" is a correct and usable part of a sentence in written English.
It is commonly used to indicate that something cannot be assumed or taken for granted. It is often used to express doubt or uncertainty about a statement or situation. Example: The guilt of the defendant cannot be presumed without concrete evidence.
Consent cannot be presumed, however.
His early downfall cannot be presumed.
It cannot be presumed that he was the maker of those examples even closely resembling his plates.
The court has laid down a standard that the commonality of a class cannot be presumed just because all presumptive members feel the same grievance.
Again, we hold only that, under the specific circumstances of this case, in which it is impossible to determine -- instead, only to speculate -- that counsel's sleeping was at a critical stage of the trial, prejudice cannot be presumed.
Because the power to determine the manner of appointing electors is vested by the Constitution itself in the state legislature -- and only in the state legislature -- it cannot be presumed to have been delegated sub silentio, nor can another branch arrogate it to itself without the legislature's express approval.
Equally, it cannot just be presumed the Glazers are these avuncular types who will tolerate the indignities of the last six months persisting.
It cannot, however, be presumed that a poorly vascularised tumour will be less susceptible to antiangiogenic therapy as it is well established that neovascularisation must take place for tumours to grow beyond a certain size.
Withdrawal cannot happen until success, and no result other than success can ever be presumed as a possibility.
However, another large part of The Donald's appeal to some voters is that he is the ultimate outsider: a billionaire funding his own campaign who, it is presumed, cannot be bought.
On their Owenian line, the story becomes that the arguments of Parmenides and his Eleatic successors were meant to be generally destructive of all previous cosmological theorizing, in so far as they purported to show that the existence of change, time, and plurality cannot be naively presumed.
