host n．主人，旅馆招待 vt. 当主人招待
例句：Which country will be the host country for the 2012 0lympic Games?
哪个国家将是2012年奥运会的主办国？

hospital n．医院
例句：When she left the hospital,she was completely cured.
出院时，她已经完全痊愈了。

hospitality n. 好客，宜人，盛情
例句：In response to their hospitality, they wrote a thank-you note.
为回报他们的热情，他们写了一封感谢信。

hostage n．人质，抵押品
例句：The terrorists are holding three men hostage.
恐怖分子把三个人扣为人质。

hostile adj．敌对的，敌方的 n．敌对
例句：Rarely has such generous a proposal encountered a hostile reception.
这样善良的建议遭到了敌意的对待还是非常少见的。