Question

1 I found the cat ____ under the bed ,who had caught a mouse

Answer 1

1 此句有两种理解,hide既可用作及物动词也可用作不及物动词,hidden和hiding都对.

I found the cat hiding under the bed,who had caught a mouse.

译：我发现那只刚捉了一只老鼠的猫正躲在床底下.(hide在此用作不及物 动词,不用被动,意为“躲藏”)

I found the cat hidden under the bed,who had caught a mouse.

译：我发现那只刚捉了一只老鼠的猫被藏在床底下.（hide在此用作及物动词,用其过去分词表被动,意为“被藏匿”）

2 presently在此意为now,常用在美国英语中.用presently与谓语动词is working呼应,也符合语境.而recently意为not long ago,常与过去时或完成时搭配使用,表过去时间.

6 此句的肯定句形式是：It could have been they who helped Sunny get her work done.很可能是他们帮Sunny完成了工作.

they是被强调的主语,应用主格.It could have been ...who ...是强调句型.