According to Yules (2004) as we try to capture more aspects of the structure of complex English sentences we inevitably need to indentify more rules and concepts involved in the analysis of syntax 
Symbols 
Complement phrases
Movement rules
Lexical rules
Abbreviation for syntactic categories 
Grammatically incorrect is represented by an * 
Rules must be:
Accured
Gennerative grammar
Small & infinite set of rules that GENERATE not only describe 
Deep surface structure :The syntax form, and divide the elements in a sentence 
Apply for many situations
Proved
Clear
Tree diagrams: Are visual representations of syntactic structures 
Hirerarchical organization
Phase structure rules 
Recursion
Means that the rule can be present more than ones 
Syntax
The structure and ordering of components  within a sentence