input hypothesis克拉申输入假说.pptx

Input Hypothesis徐静Brief introductionDefinitionThe theory of the Input HypothesischaracteristicsAdvantages and disadvantagesImplication of the Input Hypothesis for English classroom teachingBrief IntroductionBrief Introduction Stephen Krashen is an expert in the field of linguistics,specializing in theories of languageacquisition and development. Much of his research has involved the study of non-English and bilingual language acquisition. Krashen’s well-accepted theory of second acquisition has had a large impact on all areas of language research and teaching since the 1980s. His theory of second language acquisition consists of five main hypothesis:the Acquisition-learning Hypothesis, the Monitor Hypothesis, the Natural Order Hypothesis, the Input Hypothesis, and the Affective Filter Hypothesis.The Input Hypothesis is the central part of this overall system.The Input Hypothesis is the most important one of Krashens theory of second language acquisition.The input hypothesis attempts to explain how learners acquire a second language.The theory of the Input HypothesisHow do we move from stage i,where i response current competence,to i+1,the next level in second language acquisition?Ways of getting input???The Input HypothesisThe best methods are therefore those that supply “comprehensible input” in low anxiety situations,containing messages that students really want to hear.These methods do not force early production in the second language,but allow students to produce when they are “ready”,reconizing that improvement comes from supplying communicative and comprehensible input,and not from forcing and correcting production.Krashen,1985The Input Hypothesis makes the following claim:a necessary (but not sufficient)condition to move from stage i to stage i+1is that acquirers understanding input that contains i+1,where “understanding” means that acquirers focus on the meaning but not the form of the message.According to this hypothesis,people require language best by und