1. each既可用作形容词，又可用作代词，在句中可以作定语，主语、宾语、同位语、状语等。
Each student has his own dictionary. (形容词，定语)
Each has hi s good point. (代词，主语)
Our head teacher had a talk with each of us. (代词，宾语)
The students each have a desk. (代词，同位语)
The children can have a bag each. (副词，状语)
2. each与every都可用作形容词，在句中作定语，但each更强调个人或个别，every更强调全体或全部。比较：
I know each number of your family.
I know every number of your family.
3. each指两个或两个以上的人或事物中的“每个”;every是指许多人或事物的“全体”，与all的意思相近。试译：
这条街上每边都有很多商店。
[误]There are many shops on every side of the street.
[正]There a re many shops on each side of the street.
我给她父母每人一件礼物。
[误]I gave a present to every one of her parents.
[正]I gave a present to each of her parents.
4. 指上下文提到过的确定数目中的“每一个”时，要用each;如果上下文没有提及时，不能用each，要用everyone等。试译：
我认为这三个答案个个都正确。
[误]I think every answer of the three is right.
[正]I think each of the three answers is right.
我看见人人都忙着工作。
[误]I saw each was busy with his work.
[正]I saw everyone was busy with his work.
