Unit 2 Lessons in Life Using language课件 2022-2023学年高中英语外研版选择性必修第四册

新外研社高中英语选择性必修四Unit 2 Lessons in Life Using Language Grammar 2 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 “people in general” and can be omitted. c A box of tissues will be needed to get through this book! 2 The focus of the sentences is on the recipient of the action, not on the subject of the sentence. a On discovering that Morrie is being weakened by a severe illness,… 3 The subject goes with lengthy expressions that are better put at the end. b ... Tuesdays with Morrie is just made up of a collection of over-emotional thoughts and messages,... long subject 被动语态 英语中的语态分为主动语态和被动语态。主动语态表示主语是动作的执行者；被动语态表示主语是动作的承受者。 以下几种情况常用被动语态： 1) 不知道或没有必要指出谁是动作的执行者； 2) 为了强调动作的承受者； 3) 主语有较长的修饰语时； 4) 通知、公告，新闻报道和科技报道等。 一、几种常见的被动语态构成 1. 一般现在时：am / is / are +及物动词的过去分词   eg The books are found in the bag. A cap is put in the bag. 2. 一般过去时： was / were +及物动词的过去分词 eg He was not happy because he was punished by his parents. 3. 一般将来时： will / be going to + be +及物动词的过去分词 eg The cars will be sent abroad by sea. A new bridge is going to be built over the river. 4. 过去将来时：would be +及物动词的过去分词 eg He knew he would be punished for it. 5. 现在进行时： am / is / are + being +及物动词的过去分词  eg The clothes are being washed. 6. 过去进行时：was / were + being +及物动词的过去分词 eg They told me that the case was being investigated. 7. 现在完成时： have / has + been +及物动词的过去分词 eg His homework has not been finished. 8. 过去完成时： had + been +及物动词的过去分词 eg When I came in, the tickets had been sold out. 9. 含情态动词的被动语态：情态动词 + be +及物动词的过去分词 eg Your homework must be handed in after class. 二、使用被动语态时应注意的问题 ☆被动语态除用“be +及物动词-ed形式”构成外，还可用