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on of things.Engagement deals with sourcing attitudes and the play of voices around opinions indiscourse. Graduation attends to grading phenomena whereby feelings are amplified andcategories blurred (Martin & White 2005: 35)". The sub-systems of the appraisal systemare integrated with each other and forming a whole.This theory is not only systematic as it categorizes different types of evaluations butalso highly operable. Thus it can be applied to do researches on various discourses to getthe evaluative meaning and discover the interpersonal relationship encoded in the text.Advertising language makes the most of appraisal resources to express advertisers'attitudes towards and comments on products so as to influence the potential customers topurchase them. To analyze advertising texts of the Problem-Solution pattern fromappraisal perspective widens the study of advertising discourse and offers a new vision toAppraisal theory and its application

1.2 Data collection and research method
In order to carry out this research, 50 English commercial advertising texts havebeen chosen randomly through different sources. Some are from American magazineslike Readers' Digest?，others are from some books devoted to advertisements. Given theaim of the research, all the 50 English commercial advertising texts are in theProblem-Solution pattern.In this thesis，both quantitative method and qualitative method will be applied to dothe research. The quantitative analysis will be used to get the distribution of appraisalresources in the ‘problem’ part and the ‘solution’ part respectively. Based on thedistribution of appraisal resources, subsystems of the Appraisal theory will be used towork out the distinctive features in terms of appraisal meaning in the 'problem' part andthe 'solution' part. And then the author will try to give the underlying reasons for thosefeatures by exploring interpersonal relationship between the advertisers and potentialcustoms and explaining how the appraisal resources are used to express the advertisers'attitudes and standpoints. All these parts belong to qualitative analysis.

2. Literature review

This part will give a review of existing studies on advertisements, discourse patternsand the Appraisal theory. There are various types of advertisements and this thesisfocuses on English commercial advertisements. We begin with a review of the previousstudies on advertisements. Then attention will be given to the studies of discoursepatterns, especially the Problem-Solution pattern. In the third part, the author will give adetailed review of previous studies of Appraisal theory both at home and abroad to findout what achievements have been made and what remains to be discovered in order topave ways for analysis in part three. Finally, a summary will be made to prove thenecessity and originality of present study.

2.1 Advertisements

2.1.1 Definitions and classifications of advertisement
When it comes to the definition of advertisements, the author finds it difficult tosearch enough definitions given by other scholars. Instead, a definition of "advertising" isprevailing in various books or papers related to the study of advertisements. However, wecan never deny the difference between advertisements and advertising. According toOxford Advanced Learner s English-Chinese Dictionary (OALD 2004)，“adver本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。