八下U7Grammar.ppt
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1、学习目标:学习目标:1. 会区分主动语态和被动语态。会区分主动语态和被动语态。2. 会写出一般现在时态和一般过去会写出一般现在时态和一般过去时态的被动语态。时态的被动语态。3. 会用上述两种时态的被动语态描会用上述两种时态的被动语态描述动作和事件。述动作和事件。被动语态被动语态 (the Passive Voice) When to use it What it is What about its strcture in simple present and past tensesHow to use it 英语动词有两种语态: 主动语态 (the Active Voice) 被动语态(the
2、 Passive Voice)A. 主动语态表示主语是动作的主动语态表示主语是动作的执行者执行者。B. 被动语态表示主语是动作的被动语态表示主语是动作的承受者承受者。We planted the tree.The tree was planted by us.What it is which is the passive voice: _a: What is used to be a training centre in ORBIS?b: More money was needed for charity.c: We send new books to poor children.d: Loc
3、al people were used to wearing poor clothes.e: Toys and CDs are sold to raise money.f: Volunteers collected warm clothes for the poor.g:Thousands of people join the charity show.h: Most cases can be prevented or cured.abeh(1)当我们不知道谁是动作的执行者,或)当我们不知道谁是动作的执行者,或 没有必要指出谁是动作的执行者时。没有必要指出谁是动作的执行者时。(2)当我们需要强
4、调动作承受者,而不是)当我们需要强调动作承受者,而不是动作的执行者。动作的执行者。这本词典被保存完好这本词典被保存完好(不需要说明是谁保存的不需要说明是谁保存的) 。这些恐龙蛋是在二十世纪二十年代发现的。这些恐龙蛋是在二十世纪二十年代发现的。 (强调恐龙蛋被发现而不是强调由谁发现)(强调恐龙蛋被发现而不是强调由谁发现) The dictionary is well kept. These dinosaur eggs were found in the 1920s.When to use it Football is played by people all over the world. ca
5、meras are used by them for taking photos. A bank was robbed yesterday.man-made satellites were sent up into space last year.Look and find out the similarities (相同点相同点): the Structure is助动词助动词be+及物动词的过去分词及物动词的过去分词 (be+V.P.P) a: A charity show is held in our town. (in 2013)b: Many doctors are invited
6、to our hospital. (last year)c: One of the charity projects was called Project Hope.(now)Change the tense:A charity show was held in our town in 2013.Many doctors were invited to our hospital last year.One of the charity projects is called Project Hope now.What about its strcture in simple present an
7、d past tenses常用时态形式:常用时态形式: (1)一般现在时:)一般现在时:This sweater is used for keeping warm.You are wanted on the phone.The Great Wall is visited by many foreigners every year.(am/is/are +及物动词的过去分词)及物动词的过去分词)(2)一般过去时:)一般过去时:A sports meeting was held in our school last week.The factory was built the year befor
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