n.总部；司令部；指挥部

The company's headquarters is based in London. 这家公司的总部设在伦敦。

The soldier reported to headquarters. 这个士兵向司令部作了报告。

We lost no time in returning to the headquarters. 我们赶紧回到指挥部。

They marked down that house for their headquarters. 他们选那栋房子作他们的指挥部。

headquarters是复数名词,作主语时其谓语动词可用单复数形式。