①we each+复数
each of us+单数
the man each和each of the man是什么?
②如果变为men,那么the men each+复数（和we each一样了）
each of the men+单数（和each of us一样了）
规则如下：each,either,neither或由some,any,no,every 等构成的合成代词作主语时,谓语动词用单数
e.g.Each of us has read the book.
*但是若把each放在主语之后作为同位语,each不决定其谓语动词的单复数!
e.g.They each have a dictionary.=Each of them has a dictionary.