Two of my former MA students， He Xuede， now a professor at Panzhihua University in Sichuan， and Mao Zhi， now an associate professor at Sichuan Vocational and Technical College of Communications， emailed me their recent book draft and invited me to write a foreword for it. I am glad to see their book on English lexicology based on their research and teaching experience of it for many years and accept their invitation.
　　English Lexicology is usually taken as a \"required\" selective course for the English majors. The title of this course is somewhat rare for it is hard to find in the syllabus in the western universities. The lexicology course has been split into two areas for a long time， one is morphology and the other is semantics. The reason of this fragmentation is as the focus of linguistic investigation has been turned from the word level and sentence level to the textual or discoursal level， which is the basic difference between structural linguistics and functional linguistics， the meaning of word can be best understood in a larger linguistic context， even together with the extra-linguistic factors.