Copulas
n. 系动词（如be,seem,appear等）, （命题主词与谓词间的）连系( copula的复数形式 )
🗣️ 情景例句
Who wants to begin?
谁先开始？
I'm going to order five dozen.
我要订五打。
I'd like a cigarette, too.May I have one?
我还想抽枝烟。可以给我一枝吗？