高一英语必修第四单元语法课件

1、高一英语必修第四单元语法 Unit 4 -Wildlife ProtectionPeriod 4: Grammar Present Progressive Passive Voice现在进行时的被动语态现在进行时的被动语态高一英语必修第四单元语法The Tense of the The Passive Voice1. Present passive voice: am/is/are + p.p. The Olympic Games are usually held in big cities.2. Past passive voice: was/were+ p.p. The last Olym

2、pic Games were held in Athens.高一英语必修第四单元语法3. Future passive voice: will/shall+ be+ p.p. The 2008 Olympic Games will be held in Beijing. am/is/are+ going to be+ p.p. The 29th Olympic Games are going to be held in Beijing in 2008.高一英语必修第四单元语法 am/is/are+ to be+ p.p. The 29th Olympic Games are to be hel

3、d in Beijing in 2008.4. Perfect passive voice: have /has+ been + p.p. The Olympic Games have been held 28 times.高一英语必修第四单元语法5. Present continuous passive voice: am/is/are+ being+ p.p. -Why it is so noisy out there? -Oh, its because the road is being repaired. 高一英语必修第四单元语法Complete the sentences accor

4、ding to the text.1. We _for the wool beneath our stomachs. (Line 9)2. Our fur _to make sweaters for people like you. (L10)3. I wonder what _to help you. (L12)4. So good things _here to save local wildlife. (L25)are being killedis being usedis being doneare being done1. Discover what structure is use

5、d1. Discover what structure is usedwhat structure is usedwhat structure is used高一英语必修第四单元语法Summary: 现在进行时的现在进行时的被动语态被动语态e.g.1. A new library is being built now.2. Some animals are not being protected well enough.3. Is the bridge being repaired now? 1. 1. 构成构成： ： am/is/aream/is/are (not)(not) + + bei

6、ngbeing + + V-V-过过去分去分词词2. 2. 意义意义： ： 正在被做正在被做. .定义：定义：现在进行时被动语态表示说话时或现在进行时被动语态表示说话时或现阶段某个被动的动作正在进行。现阶段某个被动的动作正在进行。高一英语必修第四单元语法现在进行时的被动语态基本用法现在进行时的被动语态基本用法：表示现在正在进行的被动动作。表示现在正在进行的被动动作。eg:Mary is being interviewed now.高一英语必修第四单元语法Some cultural relics are being appreciated by experts.高一英语必修第四单元语法He _(

7、bite) by a mosquito.is being bitten高一英语必修第四单元语法2. 表现阶段正在进行的被动动作。表现阶段正在进行的被动动作。 The effect of the new drug is being studied at present by scientist.高一英语必修第四单元语法 The habitat of the panda is being protected by the local people . 高一英语必修第四单元语法 The habitat of the panda is being protected by the local peop

8、le . 高一英语必修第四单元语法 3. 少数及物动词的进行时表示按计划、少数及物动词的进行时表示按计划、安排将要承受某个动作。安排将要承受某个动作。 An party is being held tonight. 今晚将要举办一场晚会。今晚将要举办一场晚会。A folk song is being sung next. 下面将唱一首民歌。下面将唱一首民歌。高一英语必修第四单元语法4. be + under / in + V.可代替进行时被动语态可代替进行时被动语态e.g. The bridge is under repair. The bridge is being repaired. e.

9、g. The telephone is in use (=is being used) now. 高一英语必修第四单元语法如果去掉如果去掉being,就成为一般现在时被动语态或系表就成为一般现在时被动语态或系表结构。结构。试比较下列句子试比较下列句子: Look! The children are being taken care of by their aunt. 瞧瞧!孩子们现在正由姑姑照看着。孩子们现在正由姑姑照看着。(指现在的情况指现在的情况)Children are taken good care of at school. 孩子们在学校被照看得很好。孩子们在学校被照看得很好。(指通

10、常的情况指通常的情况)高一英语必修第四单元语法e.g:1. They are building a new library now. 被动被动A new library is being built now.Many animals are not being protected well enough.Is the bridge being repaired now?2. Many animals are being protected well enough. 否定句否定句3. The bridge is being repaired now. 疑问句疑问句高一英语必修第四单元语法A hu

11、ge Christmas tree _(decorate)is being decorated高一英语必修第四单元语法Christmas presents _(send) to children are being sent高一英语必修第四单元语法Many Christmas presents _ (buy) by my parents.are being bought高一英语必修第四单元语法A wonderful Christmas feast_ (enjoy) by my families. is being enjoyed高一英语必修第四单元语法典型例题典型例题 A new cinema

12、_ here. They hope to finish it next month. （2001 北京春季卷）北京春季卷） A. will be built B. is built C. has been built D. is being built2. I have to go to work by taxi because my car _ at the garage. (2006重庆卷重庆卷) A. will be repaired B. is repaired C. is being repaired D. has been repaired 高一英语必修第四单元语法3. -Have you moved into the new house? -Not yet. The rooms _. A. are being painting B. are painting C. are painted D. are being painted高一英语必修第四单元语法4Rainforests _ and burned at such a speed that they will disappear from the earth in the near fut