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
Which advertisement company did you serve?
你在哪家广告公司做事？
I was sick yesterday,but I'm better today.
我昨天病了，但是我今天好一些了。
Another thing which shocked Kunta was that women were held in the castle too.
还有一件事使孔塔感到惊奇，这就是关在城堡里的还有妇女。