Abstraction：Thispapergivesareportofthefindingsofapilotstudyontaskfrequencyeffectsofinput-outputcyclesonEFLlearners’oralproficiency.Theresultsshowedthattheexperimentalgroupmadegreaterprogressincomplexityandaccuracythancontrolgroups.Wemaycometotheconclusionthatcircularinput-outbenefitslearnersmost.Thestudymaygivesomeinsightsforforeignlanguageteacherstogivesecondlanguagelearnersappropriatetasksinlisteningandspeakingclasses.
　　Keywords：taskfrequencyinput-outputcyclesoralproficiency
　　1.Introduction
　　AccordingtoEllis’opinion，learners’acquisitionofasecondlanguage（L2）dependsontheirexperienceofthislanguageandonwhattheycanmakeofit（Ellis2009）.Thelearners’experience（taskfrequency）playsaroleinlanguagelearning（HarrintonandDennis2002）.Thisstudyusedthemicrogeneticanalysismethodandexperimentalmethodtoexplorethetaskfrequencyeffectsofinput-outputcyclesonthesecondlanguagelearners’oralproficiencythroughstoryretelling.Previousstudiesusuallyinvestigatedinputfrequencyoroutputfrequencyseparatelybasedoninputhypothesis，outputhypothesisorusage-basedmodelwithexperimentalmethodsorcorpus-basedmethods（Ellis2002；Ellis