syntax 句法学
about how words are combined to form sentecese and the rules that govern the formation of sentences.

eg；规则:不及物动词不能直接加宾语 主语只能是名词性质，，， 谓语只能，，，

基本规则；生成句法/转换生成句法 teaching grammar、

transformational syntax 转换句法

Categories: lexcial syntax

word level,
八种
major lexical categories：N　V Adj，Prep

minor~~~ determinal （限定词）degree word （副词） Qualifial (修饰词）
Auxi(助动词） Conjunction (连词）


How to classify these words into differing categories

1，meaning;（adj,adv,）
some words are abstract ,eg: frendship
some are a verb as well as a nuon eg >love

2，inflection;（曲折变化，曲折形式）

some word dont have the form of inflection ,eg,单复同形 eg，comfortable 没有er形式
3，Distribution(最可靠）什么样的词能和什么样的词搭配使用

Note: