英语新概念2 Lesson 34 Quick work 同步教学课件.pptVIP

主动语态表示主语是动作的执行者。 B. 被动语态表示主语是动作的接受者。 We cut the tree yesterday. The tree was cut by us yesterday. 被动语态 the Passive Voice Active voice and Passive voice Many people speak English. English is spoken by many people. S V. O. 动作执行者 动作 动作接受者 am/is/are This sweater is used for keeping warm. You are wanted on the phone. The Great Wall is visited by many foreigners every year. 一般现在时的被动语态 +及物动词的过去分词 被动语态的构成：be + done 不同时态的被动语态体现在be的变化上 一般现在时： 一般过去时： 一般将来时： 现在完成时： 过去完成时: 现在进行时： 过去进行时： am/is/are was/were shall/will be have/has been had+been am/is/are being was/were + done + done + done + done + done + done + done 三.情态动词的被动语态: 构成: 情态动词+ be +done Eg: We can hear the music outside. --- The music outside can be heard (by us). 四.在省略to的动词不定式中，变为被动语态时要加上to. see sb do sth ?sb be seen to do sth Eg:I saw him steal the bike. ?He was seen to steal the bike (by me). 1）要表达 “被...”、 “受...”、 “遭...”、 “让...”之类的语义。如： 教师很受人尊敬。 Teachers are well respected. 这孩子很招人喜爱。 The child is well loved by people. 2. 被动语态的用法 2）强调动作接受者。如： 他远近闻名。 He is known far and wide. 3）不知道或者没有必要之处动作的执行者。如： 房子每天有人打扫。 The room is cleaned every day. 2. 被动语态的用法 too,also 和 either Grammar 1)too和also用于肯定句,too位于句尾,also位于动词前。 2)either 用于否定句，位于句尾。 例如：I want to go there, too. I also want to go there.我也想去那里。 He doesnt want to go there,either.他也不想去那里。 already, still 和 yet Grammar 1)already用于肯定句,表示动作已经发生。 2)still用于肯定句，表示动作正在进行。 3)yet 多用于否定句和疑问句，表示期待某事发生，也可用于肯定句。 例如：He has already known it.他已经知道了那件事。 They are still talking about it.他们仍在谈论那件事。 She will succeed yet.她还会成功的. Grammar 1)so和 how用作副词，通常放在形容词和副词前面，其结构如下: so,such,how 和 what so(as) / how+形容词或副词+其他 so(as) / how+形容词+a 或 an+名词 so(as) / how+many(few)或much(little)+可数名词复数或不可数名词+其他 It was raining so hard that they had to stay indoors.雨下得很大，他们不得不待在家里。 How interesting a novel it is!这是一部多么有趣的小说！(不可说 how an interesting) Grammar 2)such和 what用作形容词，可以修饰可数名词的单复数，也可以修饰不可数名词。被such和w