先月last month先週last week先生teacher先輩senior先日the other day先々月month before last先々週week before last先祖ancestor先端pointed end先頭head祖先ancestor先行preceding先先月month before last先先月month before last先先週week before last先先週week before last先代family predecessor先だってrecently先着first arrival先天的a priori優先preference
月曜日Monday今月this month先月last month来月next monthさ来月the month after next月曜Monday年月months and years月末end of the month再来月month after next先々月month before lastヶ月#NAME?先先月month before last満月full moon