Deep Structure as Logical Form

A transformational derivationof a sentence is a sequence of labeled phrase structure trees. The last tree in the sequence represents the surface structureof the sentence. The first tree represents the deep structureof the sentence.1Each later tree is derived from its predecessor via the application of exactly one transformational rule. The surface structure tree represents that syntactic structure relevant to the way in which the sentence is pronounced. It will be assumed here that the deep structure tree is a full semantic representation of the sentence.2