1. divide into把……分成
We divide into pairs and each pair takes a region
我们分成两人一组，每一组负责一个区域。
Life today is divided into work and leisure.
如今，生活被分成工作和休闲两部分。
It will be easiest if we divide them into groups
如果我们将他们分成小组将是最简单的。
Divide the dough into 12 even pieces and shape each piece into a ball
将面团分成12等份，每份揉成球状。
The idea is to divide up the country into four sectors
该主张是将国家分成4个防区。
The results can be divided into three main categories.
结果可分为三大类。
The procedure can be divided into two parts.
这一程序可以分为两部分。
The report can be conveniently divided into three main sections.
这份报告不用费事就可划分为三个主要部分。
The course book is divided into 30 lessons.
这本教科书分为30课。
The school year is divided into three trimesters.
一学年分三个学期。
The three-hour class is divided into four blocks of 45 minutes each.
三小时的课分成四节，每节45分钟。
The brochure is divided into two sections, dealing firstly with basic courses and secondly with advanced ones.
小册子分为两部分：第一部分涉及基础课程，第二部分涉及高级课程。
Manhattan is divided into distinct neighborhoods.
曼哈顿分为几个区，风格各异。
The physical benefits of exercise can be divided into three factors
运动对身体的好处可以分为3个方面。
This book is divided into two distinct parts.
这本书分为内容不同的两部分。
Sixteen teams are taking part, divided into four groups
有16个队参加，分为4组。
The class is divided into small groups for the oral drill.
为进行口语训练，全班分成了几个小组。
Birds can be divided into many kinds/ sorts/ types.
鸟可以分成许多类。
Animals can be divided into different classes.
动物可以分为不同种类。
Music can be divided into several classes.
音乐可以分为若干类。
This cake is divided into four equal parts.
这个蛋糕被分成了4等份。
The year is divided into four seasons.
一年分四季。
The year is divided into twelve months.
一年分为12个月。
They were further divided into two schools.
他们又分裂成两个学派。
Our municipality is divided into ten districts.
我们这个市，下面设10个区。
Haikou is divided into three districts.
海口分为三个区。
2.当divide后只有数词，而无“部分、组、队等”时，既可以使用divide into，又可以使用divide in如：
Divide the cake in/into four and share it equally.
把这块蛋糕切成四块，平均分吃。
I've divided the money in half.
我把钱平均分成了两半。
First he divided it in (into) two; then he divided each into (in) four.
他先把它分成两份，然后又把每份分成4份。
另外，注意：
He divides his energies between politics and business.
他把精力一部分用在政治上，一部分用在生意上。
Paul divides most of his spare time between the study and his bedroom.
保罗在大部分空闲时间里要么呆在书房里，要么呆在卧室里。
Can it ever be right to divide a mother from her child?
让母子分离难道还有对的时候？
The river divides my orchard from his.
这条河把我的果园和他的果园隔开了。