Methodology of TGG
The description of sentences in TGG is based on the operation of several types of rules which constitute the components of grammar. It is important to note that there are differences between the two versions of TGG, the Classical Theory of 1957 and the Standard Theory of 1965, in the types, the number, the status and the order of components.
2. The Standard Theory
2.1. The Types of Components
The syntactic component has two components: the base and the transformational component. This organization is outlined below:
A. Syntactic Component
(i) The Base
(a) PSG rules
(b) Lexicon (with rules of lexical insertion)
(ii) Transformational Component
B. Semantic Component
C. Phonological Component
In this model Chomsky added the Semantic component because meaning should have the same formal treatment as syntax. Semantics was introduced as an essential part of the grammatical analysis of a language.