1 linguistic competence: comsky defines competence as the ideal user’s knowledge of the rules of his language,and performance the actual realization of this knowledge in linguistic communication.
2 sentence : a sentence is a structurally independent unit that usually comprises a number of words to form a complete statement question or command.
3 transformation rules: syntactic movement is governed by transformational rules. the operation of the transformational rules may change the syntactic representation of a sentence.
4 d-structure : a sentence may have two levels of syntactic representation. one exists before movement take place, the other occurs after movement take place. in formal linguistic exploration, these two syntactic representation are commonly termed as d-structure.
5 move а : just as there is a general rule for all phrase structure rules,i,e. the x-bar schema, there is a general movement rule accounting for the syntactic behavior of any constituent movement.