2019-2020学年人教新标准版必修1课件：Unit 4 Period One

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1、,Disaster is unpredictable;we should reasure the present. 灾难是不可预料的，我们应该珍惜眼前的一切。,单元核心素养：思维品质,Can earthquakes be predicted？Scientists are working on programs to predict where and when an earthquake will occur.They hope to develop an early warning system that can be used to forecast earthquakes so that

2、 lives can be saved. Earthquakes are the most dangerous and deadly of all natural events.They occur in many parts of the world.Giant earthquakes have been recorded in Iran，China，Guatemala，Chile，India，and Alaska.Two of the biggest earthquakes that were ever recorded took place in China and Alaska.The

3、se earthquakes measured about 8.5 on the Richter Scale.,话题导入,The Richter Scale was devised by Charles Richter in 1935，and compares the energy level of earthquakes.An earthquake that measures 2 on the scale can be felt but causes little damage.One that measures 4.5 on the scale can cause slight damag

4、e，and an earthquake that has a reading of over 7 can cause major damage.It is important to note that a reading of 4 indicates an earthquake ten times as strong as one with a reading of 3. Scientists want to be able to predict those earthquakes that have a reading of over 4 on the Richter Scale. How

5、do earthquakes occur？Earthquakes are caused by the shifting of rocks along cracks，or faults，in the earths crust.The fault is produced when rocks near each other are pulled in different directions.The best-known fault in North America is the San Andreas fault in the state of California in the United

6、States.,The nations that are actively involved in earthquake prediction programs include Japan，China，Russia，and the United States.These countries have set up seismic(地震的) networks in areas of their countries where earthquakes are known to occur.These networks are on the alert for warning signs that

7、show the weakening of rock layers that can precede(在之前发生) an earthquake.Many kinds of seismic instruments are used by the networks to monitor the movements of the earths crust.The scientists also check water in deep wells.They watch for changes in the water level and temperature that are associated

8、with movement along faults.,查看答案,1.Two of the biggest earthquakes that were ever recorded took place in China and Chile.( ) 2.An earthquake that has a reading of over 7 can cause major damage.( ) 3.The fault is produced when rocks near each other are pulled in the same direction.( ),根据短文内容判断正(T)、误(F

9、),F,T,F,PART 1,读前清障,PART 2,课文理解,Period One Warming Up & ReadingPre-reading,PART1,读前清障,匹配左边的单词与右边的汉语意思 第一组,查看答案,1.crack A.发臭的；有臭味的 2.smelly B.运河；水道 3.pipe C.裂缝；噼啪声；使开裂；破裂 4.event D.管；导管 5.canal E.事件；大事,6.steam A.砖；砖块 7.ruin B.废墟；毁灭；使破产 8.brick C.轨道；足迹；痕迹 9.dam D.蒸汽；水汽 10.track E.水坝；堰堤,第二组,查看答案,查看答案,1

10、1.rescue A.灾难；灾祸 12.trap B.援救；营救 13.disaster C.掩蔽；掩蔽处；避身处 14.bury D.埋葬；掩埋；隐藏 15.shelter E.使陷入困境；陷阱；困境,第三组,PART2,课文理解,1.Whats the main idea of the passage? A.A terrible earthquake of Tangshan. B.Before the earthquake of Tangshan. C.During the earthquake of Tangshan. D.Damages of the earthquake of Tan

11、gshan.,查看答案,Step 1 Fast-reading,2.Find out the main idea of each paragraph. Para.1 A.The earthquake caused unbelievable destruction to Tangshan. Para.2 B.The earthquake happened and caused deaths or injuries in Tangshan. Para.3 C.Help came soon after the quakes. Para.4 D.No one paid attention though

12、 strange things happened.,查看答案,.Tell whether the following statements are True(T) or False(F). 1.Before July 28,1976，strange things happened in the countryside of northwest Hebei.( ) 2.When the earthquake happened in Hebei，one-third of the nation could feel it.( ) 3.The number of people who were kil

13、led or seriously injured reached more than 4,000,000.( ) 4.Another big quake shook Tangshan while rescue workers and doctors were saving the people trapped.( ) 5.Animals like cows，pigs and chickens as well as people suffered a lot in the earthquake.( ),Step 2 Careful-reading,查看答案,F,T,F,T,T,.Choose t

14、he best answer. 1.Many strange things happened in the countryside EXCEPT that . A.the well walls had deep cracks in them B.some animals were too nervous to eat C.fish jumped out of bowls and ponds D.birds flew higher than usual,查看答案,2.How long did the earthquake last? A.15 minutes. B.42 minutes. C.1

15、5 seconds. D.42 seconds.,查看答案,3.Which is NOT true according to the passage? A.People in Beijing felt the earthquake. B.People of Tangshan cared much about the strange events before the earthquake. C.If the earthquake had happened during the daytime，it wouldnt have caused so many deaths. D.Many soldi

16、ers helped to rescue the people who were trapped under the ruins.,查看答案,4.Which of the following can also be used as a title of the passage? A.Tangshan Earthquake B.The World at an End C.How to Prevent an Earthquake D.New Tangshan,查看答案,5.What does the last sentence “Slowly，the city began to breathe a

17、gain.” mean? A.People who were trapped came to life. B.The trees turned green. C.The animals began to breathe. D.The city returned to normal gradually.,查看答案,After reading the passage，please fill in the following blanks. Several days before July 28,1976，many strange things happened in Tangshan.They w

18、ere 1. (sign) for an earthquake.But people 2._ lived there didnt think much of that.At 3:42 am that day，the earth began 3. (shake)，4. destroyed almost all the city in fifteen terrible seconds.Many people,5. (include) workers and doctors，came 6._(rescue) those who were trapped under the ruins.Later t

19、hat afternoon, 7. big earthquake hit the city.More people were killed or injured and 8. (many) buildings fell down.,查看答案,Step 3 Post-reading,signs,who/that,to shake,which,including,to,rescue,another,more,Very soon the army sent a lot of soldiers to help，and teams 9._ (organize) to dig out the 10. (t

20、rap) and to bury the dead.By and by things improved and the city began to breathe again.,查看答案,were organized,trapped,1.But the one million people of the city，who thought little of these events，were asleep as usual that night. 句式分析 此句的主干为But the one million people of the city were asleep。who thought

21、little of these events为非限制性定语从句，修饰one million people；as usual为方式状语；that night为时间状语。 自主翻译 _ _,查看答案,但是这座城市的一百万居民几乎没有把这些情况当回事，那天晚上照常睡着了。,Step 4 Sentence-learning,2.Then，later that afternoon，another big quake which was almost as strong as the first one shook Tangshan. 句式分析 此句为复合句，句子的主干为another big quake

22、 shook Tangshan。which引导的定语从句修饰another big quake；Then，later that afternoon为时间状语。 自主翻译 _ _,查看答案,接着，在那天下午晚些时候，强度几乎和第一次一样的地震又一次在唐山爆发了。,3.The army organized teams to dig out those who were trapped and to bury the dead. 句式分析 此句为复合句，句子的主干为The army organized teams。两个不定式to dig out those 和 to bury the dead为并列结构，在句中作目的状语；who were trapped为定语从句，修饰第一个不定式中的宾语those。 自主翻译 _,查看答案,解放军组成小分队，将受困的人们挖出来，将死者掩埋。,