If a sentence isn't already in that form, it must be translated into a sentence of that form. The Subject Term is found before the Copula. The Predicate Term is found after the Copula. A sorites is a linked series of standard-form syllogistic arguments, each of which has the standard 2 premises. E.g., All whales are gray.
All whales are mammals.
All gray animals are intelligent. So, All whales are intelligent mammals. All whales are gray. All gray animals are intelligent. So, All whales are intelligent.