4、say.Merry ChristmasInChristmas,Wesingsongs.Wehave a Christmas tree.Wegive presents.Wehaveabigmeal.InChristmas,Wesingsongs.Wehave a Christmas tree.Wegive presents.Wehaveabigmeal.WearehappyonChristmas.人称代词主格宾格形物名物主格宾格形物名物Iyouwetheysheithememymineusouroursherherherhimhishisyouyouryoursthemtheirth