Unit 6 Section B Grammar Focus课件-2023-2024学年人教版英语九年级全一册

Unit6 When was it invented? (Grammar) Studying Aims(学习目标): 1.Learn the structure of the past tense with passive voice. （一般过去时中被动语态的谓语构成是什么） 2. Learn to translate passive voice sentences. （被动语态的句式如何翻译） 3.Try to change active voice into passive voice. （如何将主动语态转化成被动语态） 4.Introduce inventions by using the passive voice. （用被动语态介绍发明物） invention “发明” The four great inventions of ancient China papermaking technology printing gunpowder compass Old inventions The new four great inventions of China online shopping high-speed railways mobile payment shared bikes New inventions A small invention potato chips What do you know about potato chips? Potato chips by many people. It that potato chips are more than 150 years old. Even today potato chips still by most people. They by accident in 1853. The inventor George Crum. One day, he to serve fried potatoes by a customer. When the potatoes came, the customer thought they too thick. The potatoes for a long time until they were crispy. Potato chips to be the most popular snacks. are loved ’s said are enjoyed were invented was called was asked were cut were cooked were considered Passive voice in the simple past tense 一般过去时中的被动语态 was/were done Sructure： 谓语构成 1.The telephone (invent) in1876. 2.Yesterday the rooms (clean) by Tom . was invented were cleaned eat, like, invite, tell, lock, ring, break, bring 4b Complete the sentences with correct forms of the verbs in the box. 1. You ____________ to the party last night, weren’t you? Why didn’t you go? 2. The earthquake happened all of a sudden, but luckily the villagers ____________ to a safe place. 3. The door __________ when we arrived, so we ______ the bell. 4. The students ___________ not to eat or drink in class, but Ruby