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
His number is five, five, five, seven, five, three, two.
他的号码是5557532。
I think gray hair makes you look rather distinguished.
我觉得你灰白的头发使你看上去很严肃。
What a lovely place! I'm going to go across the river.
真是个好地方！我要到河那边去。