preface
单词辨析：
指书、演讲等的开篇，概括介绍后面主体部分的内容。
He explains in the introduction how he gathered the data.
他在引言里解释了他是如何收集到数据的。
The students showed great interest after the professor gave a brief introduction to the course.
教授简单介绍了这门课程之后，学生们表现出极大的兴趣。
尤指书籍开篇介绍其写作目的的说明性文字。
write a preface to a book
为一本书作序
The preface gives an overview of the book's contents.
序言对全书内容作了一个概述。
相关例句：
Full-text seven chapters: the first chapter preface, analyzes the subject topics basis.
全文共七章：第一章引言，分析了该课题选题依据。
There was a brief introduction of the book in the preface.
前言中有对书的简单介绍。
Preface: Mankind creates building, constructed to remould mankind again!
引言：人类创造了建筑，建筑又重塑了人类！
Each of the old readers has a brief preface that highlights the authors 'views about books and reading.
每本老读本都有一篇简短的序言，着重指出作者对书本和阅读的观点。
The president prefaced his remarks by saying he has supported unemployment benefits all along.
总统在发表讲话前说他一直以来都支持发放失业津贴。
The whole article includes three parts with eight chapters except the preface.
全文除引言外包括三篇共八章的内容。