考点九：由some，any, no，every 构成的复合词如somebody, nothing, nobody, anything, everybody等不定代词作主语，谓语动词用单数;由each, every one, no one, either, neither, another, the other作主语时，谓语动词用单数;由either, neither, each, every修饰名词作主语时，谓语动词也用单数。如：

　　Each of us has a tape-recorder.

　　我们每人都有录音机。

　　Neither is satisfactory.

　　两者都不令人满意。