Thispaperdiscussesthequestionofhowtoteachword-formationknowledgeeffectively.Toachieveabetterresult,teachersmaynotonlybeinterestedintheform,meaningandfunctionofacertainwordpart,butalsoinsuchaspectsasthedeterminingfactorwhichgovernsthechoiceofvariantformsandthevariouschangesbroughtaboutbytheword-formationprocess.Whenteachingwordparts,teachersareadvisedtopayattentiontotheirusefulnessandproductivenessanddrawtheirlearners’attentiontovariouslinguisticpatterns.Atentativeprocedureissuggestedfortheeffectiveteachingofword-formationknowledge.