Unit 2 Lessons in life Grammar 课件 2022-2023学年高二英语外研版（2019）选择性必修第四册

Unit 2 Period 2 Grammar 课 前 导 入 A: The bird is eating worms. B: How can you change the sentence into passive voice? A: Worms _______________ by the bird! Look at the dialogue and complete the sentences. are being eaten 课 堂 学 习 Passive voice 1 Look at the sentences from the reading passage and match them to the reasons why the passive voice is used. a On discovering that Morrie is being weakened by a severe illness, … b … Tuesdays with Morrie is just made up of a collection of over-emotional thoughts and messages,… c A box of tissues will be needed to get through this book! 1 The subject is not known, is unimportant, or is “people in general” and can be omitted. 2 The focus of the sentence is on the recipient of the action, not on the subject of the sentence. 3 The subject goes with lengthy expressions that are better put at the end. c a b Now look for more sentences with the passive voice in the reading passage and talk about why it is used. 1. After finishing it, I feel I have been given a deeper insight into the world and can see things from a different point of view. 2. Reading this book made me feel as if I’d been woken up from a long sleep and finally opened my eyes to the world! 3. While we are living, we tend to get distracted by unimportant things, such as gathering material possessions. 4. The book made me stop and think about how much I am influenced by popular culture and the importance of creating my own values based on love and open communication. 【语法讲解】 动词的语态 (voices) 动词语态有两种：主动语态和被动语态。 主语是动作的发出者为主动语态；主语是动作的接受者为被动语态。 被动语态的各种时态及构成 一般时 进行时 完成时 现在 am/is/are done is/ am/are being done has/ have been done 过去 was/ were done was/ were being done had been done 将来 shall/will be done 无 shall/will have been done 主动语态变被动语态记忆口诀 一般现、过用be done, be有人称、时、数变。 完成时态have done, 被动将been加中间。 一般将来shall (will) do, 被动变do为be done。 将来进行无被动, shall (will) be doing。 现在完成进行同, have (has) been doing。 现、过进行be doing, 被动be加being done。 情、助、有、是妥安排, 一律随新主语变。 否定助后加not, 疑问一助置主前。 主语恰是疑问词