Unit 10 Lesson1 How Closely Connected Are We? 过去时中的被动语态课件 2022-2023学年高中英语北师大版选择性必修第四册

GRAMMAR-过去时中的被动语态 . . . 1 . ①The concept was first talked about as longago as in the 1920s. ②In the 1950s,an attempt was made by two scientists to prove the theory mathematically... ③Once the parcel had been received by thisperson,he /she would send the parcel ontoa contact of theirs until the parcel could bepersonally delivered to the correct person. ④Its name was used as the title of a play andthen a film.5 ⑤Soon the game was being played in universities across the United States. 2 . 发现 (1)一般过去时的被动语态是由“________________________________________”构成。 (2)过去完成时的被动语态是由“________________________________________”构成。 (3)过去进行时的被动语态是由“________________________________________”构成。 was / were +动词ed形式 had been+动词ed形式 was / were being +动词ed形式 3 一、概述 语态是用来说明主语和谓语动词所表示的动作之间关系的一种动词形式，英语谓语动词有主动和被动两种语态。主动语态表示主语是谓语动词所表示的动作的执行者或行为的主体，被动语态表示主语是谓语动词所表示的动作的承受者或动作所指向的对象 4 . . 时态/ 形式 肯定句 否定句 疑问句 一般过去时 主语+was/ were +动词ed形式 主语+was/ were +not+动词ed形式 Was/ Were+主语+动词ed形式 过去进行时 was/ were being+动词ed形式 was/ were being+not+动词ed形式 Was/ Were +主语+being+动词ed形式 过去完成时 主语+had been+动词ed形式 主语+had been+not+动词ed形式 Had+主语+been+动词ed形式 二、构成 5 将下列句子改为被动语态 ①I was practicing my oral English at 8:00 yesterday evening. →My oral English___________________________________at 8:00 yesterday evening. ②She had given us clear directions and we were able to find it easily. →We___________________________________________________by her and we were able to find it easily. ③The dog bit her on the leg when she was catching it on the road. →She __________________________________________on the leg when she was catching it on the road. were being practiced had been given clear directions was bitten by the dog 6 . ④Somebody had broken into the room beforewe came. →The room _________________________________before we came. ⑤She was writing a letter last night.But Id on't know whether she has finished it or not. →A letter______________________________ by her last night.But I don't know whether she has finished it or not. ⑥Bob called t