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
Catch you later.
以后再聊。
We can't get good pictures on our TV set.
我们的电视机图象有问题。
Everybody knows him.His name is Percy Buttons.
大家都认识他，他叫珀西。巴顿斯。