 The modal sentences with nominal modes can be read in two ways. One can apply an adverbial type of reading to them, which is said to be how Aristotle treats modal sentences in the Prior Analytics. The quality and quantity of such a de re modal sentence is determined by the corresponding non-modal sentence. In a de dicto modal sentence that which is asserted in a non-modal sentence is considered as the subject about which the mode is predicated. When modal sentences are understood in this way, they are always singular, their form being: