chingeffect.Althoughlargeclassesteachingmodeisamishapinlanguageteaching,itexistsinevitablyforsomeobjectivereasons.Eastopenclass,whichprovesawonderfulperformanceofthelargeclassesteachingnolongeraUtopia,providesagoodreferenceplatformfortheexploringoflargeclassesteaching.onversationanalysis,Eastopenclass,promotingasetofpragmaticstrategiesforthesakeofteachersinlargeclassesteaching.Thepaperelaboratespragmaticstrategiesinlargeclassesteachingfromlinguisticfeaturesofquestioning,feedbackandmonologuebySandel,aprofessorfromHarvardUniversity,illustratesthestrategiesfromtheaspectsofconversationdiscourserolesandconversationactivitytypes,anddiscussestherolethestrategiesplaybetweenteachertalkandclassroomeffects.Keywords:conversationanalysis;EnglishClass;pragmaticsstrategy;largeclassesteachingmode(责任编辑:张沛)