Language points. call up 打电话，使.回忆起 Ill call you up tonight (call sb. /ring sb. up ) The old photo calls up memories of my childhood. (recall sth.) call for 需要, 要求 call off 取消 call in 邀请, 请来 call on/at 拜访 (call on 后跟人作宾语，call at 后跟地点名词作宾语 ) call on drop in on pay a visit to go on a visit to visit拜访某人+ sb.拜访某地call at drop in at pay a visit togo on a visit to visit+sp.4. now and then 有时, 偶尔 I see them now and then, but not often. 例题：I used to call people _, from the moment I woke up to the time I w
