copula
/ˈkɒpjʊlə/noun
- Logic & Grammar a connecting word, in particular a form of the verb be connecting a subject and complement【逻, 语法】联结词; （联）系词（尤指连接主语和补语的动词be）
派生词
copular
adjective词源
early 17th cent.: from Latin, 'connection, linking of words', from co- 'together' + apere 'fasten'.