hostage
词根词缀：
hospitable adj. 好客的
hospit 客人 + able …的 → 好客的
hospital n. 医院
hospit 客人 + al 表名词 → 把病人当客人的地方 → 医院
host n. 主人（原意指招待客人的人）
hostage n. 人质
host 客人 + age 表行为 → 把客人〔留住〕→ 人质
hostel n. 旅馆
host 客人 + el 表地点 → 客人住的地方 → 旅馆
hostess n. 女主人
host 客人 + ess 表女性 → 女主人
数据来源：新东方英语词汇速记大全
相关例句：
With the reduction in foreign investments, the government will be even more a hostage to the whims of the international oil price
随着外资的减少，政府将更加受制于起伏不定的国际油价。
The former hostage is in remarkably good shape considering his ordeal.
想想人质曾遭受的折磨，获救后其身体状况已经是出奇地好了。
They have a hostage. it's my wife.
他们劫持了一名人质，是我妻子。
Wine growers say they've been held hostage to the interests of the cereal and soybean farmers.
葡萄种植兼酿酒者说他们一直都为谷物和大豆种植者的利益所绑架。
The embattled president also denied recent claims that he was being held hostage by his own soldiers.
焦头烂额的总统还否认了最近有关他被自己的士兵挟持为人质的说法。
But the hostage's life was saved.
但是保住了人质的生命。