MeaningfulPracticeMMCSystemMMCSystemwasproposedbyC.B.PaulstonofUniversityofPittsburghduringtheyear1970-1976.M:(MechanicalPractice):M:(MeaningfulPractice):C:(CommunicativePractice)MMCSystem•MechanicalPractice:Learners’responseiscompletelycontrolled,theycouldproduceacorrectresponsewithoutunderstandingthemeaning.学生的反应完全受控制,不用理解意思就可作出正确反应。•MeaningfulPractice:Learners’responseissomewhatcontrolled,buttheyshouldunderstandthemeaningsothattheycanproduceacorrectresponse.学生的反应仍受一定控制,但学生必须理解意思才能作出正确反应。•CommunicativePractice:oneinwhichthetypeofresponseiscontrolledbutthelearnersprovidetheirowncontentorinformation.学生根据自己所知回答问题,但反应形式仍受控制。