Unit 2 Discovering Useful Structures ppt课件-（2019）新人教版高中英语必修第二册 .pptx

1、 Unit 2 Wildlife ProtectionDiscovering Useful Structures学习中的语法Now the farmers are happy and our numbers are increasing.We are being killed for the wool beneath our stomachs.Our fur is being used to make sweaters for people like you.I wonder what is being done to help you.So good things are being don

2、e here to save local wildlife.Lead in我的发现(1)例句使用的是现在进行时，谓语动词的构成为： 。(2)例句使用的是现在进行时的被动语态，谓语动词的构成为： 。(3)观察以上例句可知，当把现在进行时主动语态的句子变为被动语态时，往往在be动词后加上一个 来体现现在进行时，然后再把动词的现在分词形式变成 来表示被动。be (am/is/are)doingbe (am/is/are)beingdonebeing过去分词Lead in肯定结构肯定结构否定结构否定结构一般疑问结构一般疑问结构特殊疑问结构特殊疑问结构be (am / is / are) being d

3、onebe (am / is / are) + not + being donebe (am / is / are) + 主语 + being done特疑词 + be (am / is / are) + 主语 + being doneWhat is the structure of present continuous passive voice?Present continuous passive voice现在进行时的被动语态的用法1表示说话时刻正在进行或发生的被动动作，常与now，look等词连用。A new film is being shown in the theatre. Le

4、ts go to see it.2表示现阶段正在进行或发生的被动动作。The plan to explore the South Pole is being made these days.3表示习惯性的被动行为，常用always, often等修饰，多带有赞扬、羡慕、责备或埋怨等感情色彩。I feel very surprised that the window of our classroom is often being forgotten to close.4表示按计划或安排将要发生的被动动作。The question is being discussed at the coming

5、meeting.5与情态动词连用，表示对正在发生的事情的推测。Do you know what Smith is doing? He is ill. He may be being examined by the doctor.“你知道史密斯正在做什么吗？”“他病了。他可能正在接受医生的检查。”1. If Bob _ (offer) a job, is he willing to go to the remote town?2. A rescue worker risked his life saving two tourists who _ (trap) in the mountains f

6、or two days.is offered即学即用即学即用had been trappedCombined training 3. My washing machine _ (repair) this week, so I have to wash my clothes by hand.4. New art forms _ (introduce) at the end of the Qing dynasty. As a result, people lost interest in paper cutting.is being repairedwere introducedCombined

7、training 即学即用即学即用5. Most airports _ (build) far away from downtown, so it often takes passengers quite a long time to arrive.6. Before you enter the Eiffel Tower, your bags _ _ (examine) by a security officer.are builtwill be examinedCombined training 即学即用即学即用7. Read and complete the passage with th

8、e present continuous passive voice of the verbs in brackets.It may seem that protecting wildlife is something far from the life of a high school student, but in fact, a lot _ (do) by young people around the world. is being doneCombined training 即学即用即学即用In Washington State, USA, wolverines (貂熊貂熊) _ _

9、 (study) by scientists in an effort to learn how to preserve the population. However during the winter, it is difficult to attract the animals to cameras hidden in snowy forests. are being studiedCombined training 即学即用即学即用 A group of students heard about the problem and created a special device whic

10、h _ (test) deep in a snowy forest now. Their invention _ (use) to send out a certain smell near the cameras. is being testedis being usedCombined training 即学即用即学即用The shy animals are attracted by the smell and coming around the cameras. They_ (observe) by a conservation researcher.are being observedCombined training 即学即用即学即用