falloff:Tobecomeless;decrease(变少;降低)
例如:Stockpriceshavefallenoff.Thenumberofstaffmeetingsfelloffafterafewmonths.(股票价格下降了.工作人员的会议在几个月后减少了.)
falldown:Tofailtomeetexpectations;laginperformance(失败:未能达到预想;在成就上落后)
例如:Thatyoungboyfelldownonthejob.那小伙子工作未能达到预想目标.
fallinto:介入,开始.
usuallyyouhavejustmet,youstarthavingaconversationordiscussionwiththem(素不相识,一见面就能进入聊天或讨论某个问题)
例如:Overbreakfastatmymotel,Ifellintoconversationwiththeownerofahardwareshop.在motel用早餐时,我就同五金商店的店主聊天了.
还有‘分成,属于’含意.
例如:Thebookfallsintothreeparts.这本书分三部分.