Unit 4 Discover Useful Structures2022-2023学年高中英语人教版2019选择性必修二

U4语法课件 情景导入 皇上（句子） 皇后（谓语） 妃子 （非谓语） 情景导入 后宫佳丽三千 皇后只有一个 （非谓语） 一个简单句 只能有一个谓语， 其他动词形式只能做非谓语 （皇后） （皇上） （妃子） Brainstorming am/is/are done was/were done did will do will be done am/is/are doing was/were doing will be doing am/is/are being done was/were being done will be being done have/has been done have/has done had done will have done will have been done had been done have/has been doing doing done 找妃子（非谓语） 现在 过去 将来 一般态 do/does/ did will do am/is/are done was/were done will be done 进行态 am/is/are doing was/were doing will be doing am/is/are being done was/were being done will be being done 完成态 have/has done had done will have done have/has been done had been done will have been done 完成进行时态 have/has been doing had been doing will have been doing have/has been being done had been being done will have been being done 现在 过去 将来 一般态 do/does/ did will do am/is/are done was/were done will be done 进行态 am/is/are doing was/were doing will be doing am/is/are being done was/were being done will be being done 完成态 have/has done had done will have done have/has been done had been done will have been done having having having having to to to to to to done doing to do conclusion 非谓语动词的三种基本形式及功能作用 （讨好） （受宠） （等上位） V-ing 主动 正在进行 V-ed 被动 完成 to+V-原 目的 将来 讨论两个非谓语动词（妃子） （讨好） （受宠） V-ing 主动 正在进行 V-ed 被动 完成 Have a try　 1.They spent a couple of days in Vancouver , seeing the sights . 2.They visit an island that had wonderful shops selling crafts and antiques . 3.They were pleased to see the beautiful mountains looking out over the city . 过去分词和动词-ing形式的用法 4. Looking at the beautiful scenery , they both agreed that it was the most awesome journey they had ever taken . 5.Seen from the train window , the mountains and forests of Canada looked massive . 1.句1和句3中，加颜色词都是形容词化的过去分词，在句中作 ，表示主语的性质或所处的状态。 2.句2中的过去分词短语在句中作 。作状语用的过去分词(短语) Activity 2　 一、过去分词和动词-ing形式作表语 He seemed delighted at the news. When we heard of it，we were deeply moved. We were sur