ited:overgeneralization&cross-associationOvergeneralizationOvergeneralization----theuseofpreviouslyavailablestrategiesinnewsituations.Walked,watched,washed…*rided,*goed,*doed,*eated…Janeadvisedmetogiveupsmoking.oldmetogiveupsmoking.*Janehopedmetogiveupsmoking.*Janesuggestedmetogiveupsmoking.Cross-association互相联想Cross-associationreferstothephenomenonthatthecloseassociationofthetwosimilarwordsoftenleadstoconfusion,e.g.Other/another,much/many,stalagmite石笋/stalactite钟乳石…ursatalllevelsoflanguagefromphonologicaltosyntactic,e.g.Thecoffeeistoohottodrink.*Theapricotistoosourtoeatit.Errors&mistakesErrors(错误)----unintentionallydeviantfromthetargetlanguageandnotself-corrigiblebythelearner(petence);Mistakes(失误)----eitherintentionallyorunintentionallydeviantformsandself-corrigible(failureinperformance).