Chapter Three Lexicon Morphology 3 )A grammatical unit (78): word is a comparably abstract unit to be set up to show how words work in the grammar of a language. In terms of lexicogrammar, word is a level between morpheme and word group in the hierarchy of grammatical units, which rises from morpheme at the bottom up to the sentence at the top In this sense, a word is a grammatical unit, of the same theoretical kind as morpheme and sentence.(一个语法单位)Chapter Three Lexicon & Morphology (3) A grammatical unit (78): word is a comparably abstract unit to be set up to show how words work in the grammar of a language. In terms of lexicogrammar, word is a level between morpheme and word group in the hierarchy of grammatical units, which rises from morpheme at the bottom up to the sentence at the top. In this sense, a word is a grammatical unit, of the same theoretical kind as morpheme and sentence.(一个语法单位)