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
What a lousy film!
这部电影太糟糕了。
Little thieves are hanged, but great one's escape.
窃钩者诛，窃国者侯。
The mondey took the tiger to a big river.
猴子领着老虎来到一条大河边。