延续性动词表示能够延续的动作如:learn,work,stand,lie,know,walk,keep,have,wait,watch,sing,read,sleep,live,stay等。延续性动词可以与表示时间段的状语连用。表示时间段的短语有:for+时间,for2years;since从句,sincehecamehere;since+时间点名词,sincelastyear,since5daysago;howlong;foralongtime等。例:Hehaslivedherefor6years.Youcankeepthebookfor5days.Istayedtherefor2weekslastyear.Howlongdidyoustaytherelastyear?在用完成时态时要用连续性动词