Unit 6 Section A (4a～4c)课件-2023-2024学年人教版英语九年级全一册

When was it invented? Section A (4a~4c) Unit 6 1 1. 能够掌握一般过去时被动语态的肯定、否定和疑问 结构及其应答。 2. 能够运用一般过去时的被动语态谈论发明的历史。 Teaching aims 重点 Practice Summary Production Presentation Warming-up 重点 2 Watch and answer Practice Summary Production What invention are Paul and Roy talking about? They are talking about a small invention—the zipper. Warming-up Presentation 3 Paul: Hey Roy, the subject for my school project is “Small inventions that changed the world”. Can you help me think of an invention? Roy: With pleasure! Let me think… hmm… I know! The zipper! Paul: The zipper? Is it really such a great invention? Roy: Think about how often it’s used in our daily lives. You can see zippers on dresses, trousers, shoes, bags… almost everywhere! Paul: Well, you do seem to have a point… Roy: Of course! I thought about it because I saw a website last week. The pioneers of different inventions were listed there. For example, it mentioned that the zipper was invented by Whitcomb Judson in 1893. But at that time, it wasn’t used widely. Paul: Really? So when did it become popular? Roy: Around 1917. Practice Summary Production Presentation Can you circle the sentences using passive voice? Read and circle Warming-up 4 2. The pioneers of inventions were list / were listed on the website. Read and choose Practice Summary Production Warming-up Presentation 3. The zipper was invented / invented in 1893. 4. Whitcomb Judson invented / was invented the zipper. 5. The zipper wasn’t used / didn’t use widely until 1917. 1. Roy saw / was seen a website last week. 5 Read and mark 1. Roy saw a website last week. 2. The pioneers of inventions were listed on the website. 3. The zipper was invented in 1893. 4. Whitcomb Judson invented the zipper. 5. The zipper wasn’t used widely until 1917. Practice Summary Production Warming-up Presentation Which sentences use active voice? Which sentences use passive voice? Active voice: _____________ S + w