559　proclaim，announce，declare和claim

① proclaim的语气较announce正式，指官方宣布重大事件，诸如外交政策、法令等，后可接名词、that从句或复合结构。

The mayor proclaimed Monday as a city holiday. 市长宣布星期一为该市假日。

The young prince was later proclaimed king. 后来宣布那位年轻的王子继承王位。

The government proclaimed that a big rally would be held to celebrate the National Day. 政府宣布将举行一个大的群众集会来庆祝国庆。

② announce指发布公众感兴趣的事情，内容可指国家、地方、生产、商品等方面的消息。

He announced immediate action. 他宣布马上采取行动。

The ceremony was announced for 9 am. 据通告，仪式于上午9时举行。

③ declare可指公开场合表明对某事的态度或官方公开、郑重地宣布某事，也可指在非正式场合直截了当的断言。

He declared himself （to be）a member of the Party. 他宣称自己是党员。

In 1812，the United States declared war on Britain. 1812年，美国向英国宣战。

④ claim表示要求承认某种权力，享有所有权或身份。

Does anyone claim the key？有没有人认领这把钥匙？

She claimed to be the owner of the house. 她对这所房子提出所有权要求。