... asdefinitions of sentence, classification of sentences, definition of requests, types of requests, etc.b. Collection2CHAPTER 3: A CONTRASTIVE ANALYSIS OF REQUESTSIN ENGLISH AND VIETNAMESE3.1. Form of ... Overview of the Theory, secondly, some definitions and classification of Sentences are attached. Thirdly, Requests, types of requests, requests in letters andtheir rules are mentioned. Letters ... survey of the letters 19Table 3: The frequency of using Requests in English and Vietnamese 45CHARTSChart 1: Requests in form of declarative sentences in English and Vietnamese 23Chart 2: Requests...