2014年秋《全优课堂》高中英语（配北师大版，选修六）同步课件：Unit 17　Laughter（6份）

配北师大版　英语　选修6 Period Three　Grammar 配北师大版　英语　选修6 1．构成：had been＋现在分词 2．功能 (1)表示过去某个时间之前一直在进行的动作。这个动作可能延续下去，也可能不延续下去。如： Becky had been studying French for 3 years before she entered the college. 贝蒂在上大学之前已经学习了3年的法语。 一、过去完成进行时 配北师大版　英语　选修6 (2)表示反复的动作、企图、情绪或最近的情况等。如： The boss had been thinking about the project. 老板一直在考虑这项工程。 (3)表示过去的某个时间点还在进行的动作。如： Tom had been swimming in the river for one hour when his mother asked him to go home.汤姆的妈妈让他回家的时候他已经在河里游泳1小时了。 配北师大版　英语　选修6 3．需要注意的问题 (1)过去完成进行时表示在过去一段时间内一直在进行的动作，而过去完成时表示在过去的某个时间之前已经完成的动作，在肯定句中它们通常不能互换。如： I had cleared up the room，so it was very tidy. 我已经把房间打扫过了，所以很整洁。 (2)在否定句中通常用过去完成时代替过去完成进行时。如： Sam had not played tennis with his classmates for a long time. 配北师大版　英语　选修6 1．进行时态表示动作未完成，非进行时态表示动作已完成。 I have been fixing the fridge all this morning. 我一上午都在修冰箱。(可能会继续下去) I have fixed the fridge.我已修好了冰箱。(已修完) 二、进行时态和非进行时态 配北师大版　英语　选修6 2．进行时态表示暂时的动作，非进行时态表示永久的动作。 Where is he working at present? 他目前在哪儿干活？(临时性工作) Where does he work？他在哪儿工作？(固定工作) 3．进行时态表示较长时间内反复进行的动作，非进行时态表示一次性动作。 You've been saying you can succeed for five years. 5年来你一直在说你能成功。(多次) 配北师大版　英语　选修6 4．进行时态侧重于时间的延续，非进行时态侧重于说明事实。 It rained cats and dogs last night. 昨晚下了倾盆大雨。(只强调下过大雨) 配北师大版　英语　选修6 用括号中所给词的适当形式填空 1．—Was the driving pleasant when you vacationed in Mexico last summer? —No，it________(rain)for four days when we arrived，so the roads were very muddy. 2．—I have got a headache. —No wonder.You________(work)in front of that computer too long. 配北师大版　英语　选修6 3．—I saw Jane and her friend in the park at eight yesterday evening. —Impossible.She________(see)the film on TV with me in my home then. 4．They became friends again that day.Until then，they________(not speak)to each other for nearly two years. 5．—Did you see a man in black pass by just now? —No，sir.I________(clean)my courtyard. 配北师大版　英语　选修6 6．He________(live)here before he went to Shanghai. 7．I________(wait)in the room for half an hour before she called me in. 8．He________(have)the breakfast before we