3、treatsthwithcaution谨慎对待…Cautiousbecautiousabout小心对待…. 过去完成进行时 ①表示过去某一时间之前一直进行的动作。 过去完成进行时表示动作在过去某一时间之前开始，一直延续到这一过去时间。和过去完成时一样，过去完成进行时也必须以一过去时间为前提。 I had been looking for it for days before I found it. 这东西我找了好多天才找着的。 They had only been waiting for
4、 the bus a few moments when it came. 他们只等了一会儿车就来了。 ②表示反复的动作。 He had been mentioning your name to me. 他过去多次向我提到过你的名字。 You had been giving me everything. 你对我真是有求必应。 ③过去完成进行时还常用于间接引语中 The doctor asked what he had been eating. 医生问他吃了什么。
5、 I asked where they had been staying all those days. 我问他们那些天是呆在哪儿的。 ④过去完成进行时之后也可接具有“突然”之意的when分句。 I had only been reading a few minutes when he came in. 我刚看了几分钟他就进来了。 She'd only been reviewing her lessons for a short while when her little sis
6、ter interrupted her. 她温习功课才一会儿，她妹妹就打断她了。 I had been sleeping when my friend telephone me练习：1.Theboywasdelightedwithhisnewstorybookwhichhe________foralongtime.A.waswanting B.haswanted C.hasbeenwanting D.hadbeenwanting2.Itwasmidnightandhewastiredbecau
