1、had+动词的过去分词动词的过去分词(p.p.)定义：定义：表示在过去的某一时间或动作之前已表示在过去的某一时间或动作之前已经发生或完成了的动作。即：经发生或完成了的动作。即：过去的过去的过去。过去。1.在老师进入教室前在老师进入教室前,李磊擦了黑李磊擦了黑 板板.LiLei _(clean)the blackboard by the time the teacher came into the classroom.had cleaned2.当我们到那儿时火车已经离开了。当我们到那儿时火车已经离开了。The train _(leave)when we arrived there.had lef
2、t构成：构成：“过去的过去（过去的过去（past-in-the-past）”。past in the pastpast now过去完成时过去完成时的的判断依据判断依据:由由“过去的过去过去的过去”来判定。来判定。过去完成时表示过去完成时表示“过去的过去过去的过去”，先先发生的动作用发生的动作用过去完过去完成时成时，后后发生的动作用发生的动作用一般过去时一般过去时。When I got to the station,the train had already left.After he had finished his homework,he went to bed.first first过去完
3、成时的否定形式：过去完成时的否定形式：过去完成时的疑问形式：过去完成时的疑问形式：主语主语had nothadnt+p.p.+其其它它.Had+主语主语p.p.+其它其它?按要求改写下列句子按要求改写下列句子Simon had finished his homework before he watched TV.否定句：否定句：疑问句：疑问句：肯定回答：肯定回答：否定回答：否定回答：Simon hadnt finished his homework before he watched TV.Had Simon finished his homework before he watched TV
4、?Yes,he had.No,he hadnt.与什么时间状语连用？与过去完成时连用的时间状语有：（1）by+过去的时间点。如：I had finished reading the novel by nine oclock last night.（2）by the end of+过去的时间点。如：We had learned over two thousand English words by the end of last term.（3）before+过去的时间点。如：They had planted six hundred trees before last Wednesday.宾从中的
5、用法宾语从句中宾语从句中 当宾语从句的主句为一般过去时，且从句的动作先于主句的动作时，从句要用过去完成时。1.在told,said,knew,heard,thought等动词后的宾语从句。如：She said that she had seen the film before.2.表示意向的动词，如hope,wish,expect,think,intend,mean,s u p p o s e 等，用 过 去 完 成 时 表 示“原 本 ”We had hoped that you would come,but you didnt.固定句式1.It was the first time+that等一些固定句型中等一些固定句型中。It was the first time that he had ever spoken to me in such a tune.2.hardly.when.,no sooner.than.,He had no sooner left the room than they began to talk about him.
