3Accordingtotheinteractionalviewoflanguage,inordertoknowhowtodowhatyouwanttodoinvolvesknowingwhetheritisappropriatetodo,andwhere,whenandhowitisappropriatetodoit,youhavetostudythepatternsandrulesoflanguageonthevocabularyleveltolearnhowlanguageisusedindifferentspeechcontexts.