deport

Compared meaning: to force someone to leave a country (verb).

比较义项：强制某人离开一国（驱逐／引渡）（动词）。

• deport 本词

  A broad term: a government forces a foreigner to leave the country, often for an immigration violation, and the person need not be accused of any crime abroad.

  泛指政府强制某外国人离境，常因违反移民规定，此人不一定在国外被控犯罪。

  The government decided to deport him after his work visa expired.

  他的工作签证过期后，政府决定将他驱逐出境。

• extradite

  A formal legal term: a country hands over a crime suspect to another country that wants to prosecute them, usually under a treaty and at that country's request.

  正式的法律用语：一国将刑事嫌疑人移交给要求起诉他的另一国，通常依据条约并应对方请求进行。

  The two countries have a treaty allowing them to extradite wanted criminals to each other.

  两国订有条约，允许彼此将通缉犯移交对方。

Deport and extradite both mean sending someone out of a country, but the reason differs. Deport means a government forces a foreigner to leave, often for an immigration violation. Extradite means handing a crime suspect to another country that wants to prosecute them.

这两个词都指用官方力量把人送出（或送去）一个国家，但理由不同：deport 是政府因某人违反移民法或其他法律而将其驱逐出境，理由不必是刑事犯罪；extradite 特指把一名刑事嫌疑人正式移交给对该罪行有管辖权的另一国，通常应对方国家的请求进行。

Compared meaning: to act or behave in a certain way (verb).

比较义项：以某种方式行事、表现或举止（动词）。

• deport 本词

  Formal and old-fashioned; almost always reflexive ('deport' + reflexive pronoun + adverb), describing how someone conducts themselves in public; rare outside formal or literary writing.

  正式且略显过时；几乎总是以“deport＋反身代词＋副词”这种自反结构出现，描述某人在公开场合的举止；除正式或文学语体外很少使用。

  The young diplomat deported himself with great dignity throughout the ceremony.

  这位年轻的外交官在整个仪式过程中举止十分庄重得体。

• act

  The most common, neutral word for doing something or behaving in a certain way; used alone or with an adverb, and not limited to questions of manners.

  是最常见、中性的词，表示做某事或以某种方式行事；可单独使用，也可搭配副词，不限于礼貌举止方面。

  He tends to act on impulse without thinking things through.

  他往往凭一时冲动行事，不加思考。

• behave

  Focuses on whether conduct is proper or well-mannered; very common when talking about children, often used alone or with 'well/badly' rather than describing action in general.

  侧重举止是否得体、有礼貌；常用于说孩子，且常单独使用或搭配 well／badly，而不是泛指一般行为。

  If you don't behave at the dinner table, you'll go straight to bed.

  如果你在餐桌上不守规矩，就得马上去睡觉。

Deport, act, and behave mean conducting oneself somehow, but register differs. Act is the most common, neutral word. Behave focuses on proper conduct, often about children. Deport is formal and rare, used reflexively. Deport can mean forcing someone out of a country, not compared here.

这三个词在“以某种方式行事、表现举止”这一意义上相近，但语域和用法不同：act 最为常用，语气中性；behave 强调举止是否得体、有礼貌，常用于说孩子；deport 十分正式、罕见，几乎只用于“deport＋反身代词”这样的自反结构中。这里不比较 deport 的“驱逐出境”这一常见义项。