Comparison between Input Hypothesis and Interaction Hypothesis

Krashen’s Input hypothesis and Long’s Interaction hypothesis are both valuable research results in the field of language acquisition and play a significant role in language teaching and learning instruction.Through comparing them,their similarities lie in same goal and basis,same focus on comprehension and same challenge the traditional teaching concept.While the differences lie in Different ways to make exposure comprehensible and different roles that learners play.It is meaningful to make the comparison because the results can be valuable guidance and highlights for language teachers and learners to teach or acquire a new language more efficiently.