动词原形是are，are -were，-been ，中文意思是v. 是，在（are 的过去式）

例如，Prices were predictably high.价格高昂是意料中的事。

Her parents were Albanian.她的父母是阿尔巴尼亚人。

Their efforts were unavailing.

他们的努力都付诸东流。

They were meditating revenge.