1) The shop closed two hours ago. The shop has been closed for t...答:一.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+一段时间,for 2 years; for a long time since从句,since he came here; since+...