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The same word or utterance could be said in different ways or using different intonational patterns to deliver different meanings and attitudes. The purpose of this study is to investigate the kinds of misunderstandings caused by the intonational patterns used by non-native speakers of English. The subjects of the study are Egyptian Bedouins living in Dahab in South Sinai. The theories of David Crystal and Peter Roach regarding intonation are the main theories used in the analysis. This research is an attempt to discover the intonational patterns produced by non-native speakers of English and to see to what extent they are distant from the patterns produced by native speakers of English. The utterances of the non-natives are divided and the intonational patterns are studied by a jury that consists of five highly educated native speakers of English language. The data is analyzed qualitatively and quantitatively and the results are presented in percentage and graphs.