The rain lasted an hour.为什么这里an hour是状语?

The meeting lasted an hour.句子成分?谁是状语? The meeting lasted about an hour. His report lasted over an hour.这句话如何翻译?在这里lasted是动词还是形容词?还是o The meeting lasted about an hour. 这句话对吗? an hour的不定冠词为什么是an 一个小时为什么是an hour而不是a hour? They talked for an hour yesterday talked是谓语 for an hour是时间状语 I heard the rain half an hour.(同义句） It ____ an hour ago .The road is wet.(rain). l heard the rain half an hour later 同义句 The rain stopped an hour ago.(改写同义句) I heard the rain half an hour later.