3、tstofurtherunder¬standthesignificanceofscienceandscien¬tificachievementandencouragingthemtoworkhardattheirlessons. TeachingImportantPoints; .Finishthetaskoflisteningtotrainthestudents'listeningability. 2.Practiseexpressingintentionsandwishestotrainthestudents'speakingability. Te