常用英语语法术语表语法grammar句法syntax词法morphology结构structure层次rank句子sentence小句clause词组phrase词类partofspeech单词word实词content(notional)word虚词functional(structural)word单纯词simpleword派生词derivative复合词compound转换词convert词性partofspeech名词noun专有名词propernoun普通名词commonnoun可数名词countablenoun不可数名词uncountablenoun抽象名词abstractnoun具体名词concret...