你好這位朋友,這是同位語(yǔ)的置換.
英語(yǔ)當(dāng)中,表示哪一群人+同時(shí)交代清楚這群人中的人數(shù)時(shí),可以使用同位語(yǔ).比如,“我們?nèi)齻€(gè)人”、“他們倆”,分別可以說(shuō)成:
we two 主語(yǔ) -- us two 賓語(yǔ) -- the two of us 主語(yǔ)賓語(yǔ)均可
those two 主語(yǔ) -- them two 賓語(yǔ) -- the two of them 主語(yǔ)賓語(yǔ)均可
例句：
We two have both been here before.
Both the two of us have been here before.
It's us two who have been here before.
這三句的意思都一樣的：我們二人之前都來(lái)過(guò)這里.