Adjunct

       附接语

       A term used in grammatical theory to refer to an optional or secondary element in a construction: an adjunct may be removed without the structural identity of the rest of the construction being affected. the clearest examples at sentence level are adverbials, e.g. John kicked the ball yesterday instead of John kicked the ball, but not *John kicked yesterday, etc.

       语法理论用来指一个构式中可有可无或次要的成分。附接语可以去掉而不影响构式其余部分结构的完整性。句子层次上最明显的例子是状语，例如John kicked the ball yesterday“约翰昨天踢那只球”。可以说John kicked the ball“约翰踢那只球”，但不能说John kicked yesterday“约翰昨天踢”。