单选题21.There was a knock at the door. It was the second time someone______me that evening.
【正确答案】
A
【答案解析】句型“This is the first/second,etc.time+(that)+主语+完成式”表示“已经发生的动作”,例如:It is the first time that the painting has been displayed to the public.这幅画首次向公众展出。This is the second time(that)I’ve seen him.这是我第二次见到他。I tooka walk in the street yesterday and saw Mike.It was the second time(that)I had met him.昨天我在街上散步时看到了迈克,这是我第二次见到他。由此可见A是正确答案,而B错误。句型“It’s time to do sth.”表示“是该做某事的时候了”,例如:It’s time to buy a newcar.到该买新车的时候了。在需要指出动作的发出者,即动作的逻辑主语时,我们就必须借助于不定式的复合结构“for sb.to do sth.”,例如:It is time for you to get a wife andsettle down.你该找个妻子安个家了。It’s time for you to go to bed.到你该上床睡觉的时候了。在“it is time(for sb.)to do sth.”中,不定式所表示的动作都是将来要发生的动作,因此不能使用完成时的不定式,所以C错误。