Unit 6 When was it invented? Grammar Focus-4c 课件2023-2024学年人教版英语九年级全册

Unit 6 When was it invented? Grammar Focus-4c To learn to understand and use passive voice in the simple past tense Learning Objectives Complete the following sentences. 1. 拉链是什么时候被发明的？ ______ _____ the zipper ________? 2. 它于1893年被发明。 It ______ _________ in 1893. Grammar Focus was invented When was invented 3. 它是由谁发明的？ ______ _____ it invented ______? 4. 是由惠特科姆•贾得森发明的。 It ____ _________ ___ Whitcomb Judson. 5. 茶叶什么时候被带到朝鲜的？ ______ ____ tea _________ to Korea? 6. 是在六到七世纪之间被带到朝鲜的。 It _____ _______ to Korea ________the 6th and 7th centuries. was invented by When was brought was brought during Who was by 7. 热冰淇淋勺用来做什么？ What ___ the hot ice-cream scoop _____ ____? 8. 它用来盛很凉的冰淇淋。 It’s _____ ____ ________ really cold ice-cream. used for serving is used for 9. 贝尔于1876年发明了电话机。 Alexander Graham Bell _________ the telephone in 1876. 10. 电话机在1876年被贝尔所发明。 The telephone _____ ________ ___ Alexander Graham Bell in 1876. invented was invented by 1、英语动词分两种语态： 语态和 语态。 主动语态表示 是动作的 。 被动语态表示 是动作的 。 2、不知道动作的执行者是谁时，没有必要说出动作的执行者时，或只需要强调动作的承受者时，用被动语态。 被动语态的基本结构为: 承受者+ + + by+执行者 主动 被动 主语 执行者 主语 承受者 be动词 过去分词 1：一般现在时的被动语态： 主语 + __________ + _______ am/is/are 过去分词 My mother cleans the floor . 主（执行者） 谓 宾(承受者) The floor is cleaned by my mother 改为被动语态 试试看 → 练一练： He rides the motorbike every day. The motorbike __ ______ __ ___ every day. is ridden by him 2：一般过去时的被动语态： 主语 + _________+ _______ was/were 过去分词 She found the little boy yesterday. 主 谓 宾(承受者) The little boy was found by her yesterday . 变为被动语态 练一练： Workers built the house two years ago. The house ____ ____ by workers two years ago. was built 1. 肯定句: 主语 + wa