Copula
n. 系词, 介体, 接合部\\n[医] 介体; (舌)联桁; 交配
✅ 同义词
📖 牛津释义
copula
n
(grammar) type of verb that connects a subject with its complement 系词（即连系动词, 用以连结主语及其补语）
In `George became ill', the verb `became' is a copula. 在Georgebecameill一句中, became是系词.
🗣️ 情景例句
Well, I am pouring this iced tea
嗯 ，我再给你们倒冰茶
Every man thinks his own geese swans.
每个人都以为自己的东西了不起。
Certainly! I'm coming now, Mum!
当然可以，妈妈，我马上就来。