After the research, the author tentatively put forward some answers to the research questions:Firstly, the coverage of BrE version of MED is larger than that of AmE version of MED.

Pragmatic Information in Macmillan English Dictionary for Advanced Learners;

This present paper aims to do a quantitative research on how the four English-Chinese bilingualized versions of Oxford Advanced Learner\'s Dictionary of Current English (OALD for short hereinafter) do the job of definition translation, and their motivations of the trends of the treatment.

Prescriptivism and descriptivism are two guiding principles in compiling English dictionaries.

The author has,through the means of questionnaire and face-to-face conversation,surveyed and compared the use of English dictionary between college English majors and non-majors,studied the main problems and the causes,and pointed out the importance of teachers guidance to effectively use English dictionary in teaching with some practical suggestions.

In order to know the use of English dictionary by students and improve teaching standard,some non-English students were investigated about the use of English dictionary by means of questionnaire.