Question

the students each和each of the students 有什么区别

Answer 1

every of the students这个说法是没有的.可以说：every student, 或every one of the students
each和every的区别在于：
1. each指两个或两个以上中的每一个,every指三个或三个以上中的每一个.
2. each强调的是名词的个体,而every强调的是名词的全体.比如：Each student has got his textbooks.(每个学生都拿到了他的教科书）Every group member is here now. Let's begin the meeting.(小组成员都到齐了,我们开始开会吧.）第二句强调的是“都”,意思相当于All group members are here.
其实each和every差异不是很明显的,口语中经常混用.但是考试中还是要注意以上两点.

Answer 2

The students each 中 each 做students的同位语，作主语时谓语动词用复数。
如
The students eat have an English book.

Each of the students作主语时谓语动词用第三人称单数。
Each of the students has an English book.