5.1 Grammaticality
5.2 Knowledge of sentence structure
5.3 Different approaches to syntax
5.4 Transformational-generative grammar
　　5.4.1 The goal of a TG grammar
　　5.4.2 Syntactic categories
　　5.4.3 Phrase structure rules
　　5.4.4 Tree diagrams
　　5.4.5 Recursion and the infinitude of language
　　5.4.6 Subcategorization of the lexicon
　　5.4.7 Transformational rules
5.5 Systemic-functional grammar
　　5.5.1 Two perspectives of syntactic analysis: chain and choice
　　5.5.2 The three metafunctions
　　5.5.3 Transitivity: syntactic structure as representation of experience
　　　　　Material processes
　　　　　Relational processes
　　　　　Mental processes
　　　　　Verbal processes
　　　　　Behavioral processes
　　　　　Existential processes
　　5.5.4 Mood and modality: syntactic structure as representation of interaction
　　5.5.5 Theme and rheme: syntactic structure as organization of message