基本信息
1. 由and 连接的并列成分指的是同一概念，兼具身份或匹配出现。
the worker and writer is from wuhan. (那个工人兼作家…)
(比较：the worker and the writer are from beijing. 那位工人和那位作家)
bread and butter is a daily food in the west.
2. every … and (every)…, each …and (each… , no …and (no)… , many a …and (many a)…连接两个单数名词作主语。
every desk and every chair is made of wood.
many a boy and girl has made the same mistake.
3. one/every one /each/either/ the number+of +复数名词作主语。
each of the students has a book.
