人教版高一英语必修1Unit4全套课件

1、How many natural disasters do you know?Lead-inPacific typhoon refers to tropical cyclones forming in the northwestern Pacific Ocean. Other tropical cyclones include hurricanes that form over the Atlantic Ocean, Caribbean Sea, the Gulf of Mexico, or the Pacific Ocean north of the equator and east of

2、the Date Line. The basin is demarcated within the Pacific Ocean from Asia, north of the equator, and west of the international date line. Storms from the Eastern and Central Pacific crossing the date line are re-designated as typhoons. Typhoon paths follow three general directions: -Straight: A gene

3、ral westward path affects the Philippines, southern China, and Vietnam. -Recurving: Storms recurving affect eastern China, Korea, and Japan. -Northward: From point of origin, the storm follows a northerly direction, only affecting small islands. Introduction of TyphoonFlood happens when an area of l

4、and, usually low-lying, is covered with water. The worst floods usually occur when a river overflows its banks. Floods happen when soil and vegetation cannot absorb all the water ; water then runs off the land in quantities that cannot be carried in stream channels or kept in natural ponds or man-ma

5、de reservoirs. Periodic floods occur naturally on many rivers, forming an area known as the flood plain. These river floods usually result from heavy rain, sometimes combined with melting snow, which causes the rivers to overflow their banks. Coastal areas are occasionally flooded by high tides caus

6、ed by severe winds on ocean surfaces, or by tidal waves caused by undersea earthquakes. There are often many causes for a flood. Introduction of FloodA tsunami is a series of waves generated when water in a lake or the sea is rapidly displaced on a massive scale. Earthquakes, landslides, volcanic er

7、uptions and large meteorite impacts all have the potential to generate a tsunami. The effects of a tsunami can range from unnoticeable to devastating. The term tsunami comes from the Japanese language meaning harbor and wave. Although in Japanese tsunami is used for both the singular and plural, in

8、English tsunamis is well-established as the plural. The term was created by fishermen who returned to port to find the area surrounding the harbor devastated, although they had not been aware of any wave in the open water. A tsunami is not a sub-surface event in the deep ocean; it simply has a much

9、smaller amplitude (wave heights) offshore, and a very long wavelength (often hundreds of kilometers long), which is why they generally pass unnoticed at sea, forming only a passing hump in the ocean. Introduction of Tsunami Major earthquake of the worldEarthquakes have occurred on earths surface sin

10、ce times immemorial. Thousands and thousands of earthquakes happen every year however, most of which go unnoticed as they are either to weak on the Richter scale or happen in remotest of the areas. Earthquakes cause disasters and cause both loss of lives and property. May 22, 1960 witnessed the worl

11、ds strongest earthquake in Valdicvia, Chile. The earthquake with a magnitude of 9.5 on Richter scale caused 20,000 fatalities. The second strongest earthquake occurred on December 26, 2004 with a magnitude of 9.3 on Richter scale. Ocean floor of west Sumatra and Indonesia were the epicenter of this

12、earthquake that caused over 300,000 causalities. This earthquake caused the disastrous tsunami in the Indian Ocean. On March 27, 1964 Prince William Sound, Alaska faced the worlds third strongest earthquake. The earthquake measured 9.2 on Richter scale caused a great deal of damage in Anchorage. Kam

13、chatka, 1952 having 9.0 magnitude and Off the Coast of Ecuador, 1906 having 8.8 magnitude, are the fourth and the fifth strongest earthquakes on the world till date. Talk about the latest earthquake in last year. As we know, Wenchuan earthquake as huge as Tangshan earthquake in 1976. What did you do

14、 when it happened? When you know so many people had died in the earthquake how did you feel? What should we change after the earthquake? Discuss with your classmates. (1) The chickens didnt eat because they were full.(2) One third of the people died or were injured during the earthquake.(3) Such a g

15、reat number of people died because the quake happened while they were working.(4) All the hospitals had been destroyed.(5) Water was needed because dams and wells were useless.FFFTT (1) Before the earthquake Paragraph（1）Strange things began to happen, but no one took any notice of them. (2) During t

16、he earthquake Paragraph (s)（2&3）It destroyed the city of Tangshan and shocked the people. (3) After the earthquake Paragraph（4）Army came to help the survivors, bringing hope for a new life. (1) as if 似乎，好像似乎，好像 = as though She spoke to me as if she knew me. 她和我说话的神情，好像她早就认识我她和我说话的神情，好像她早就认识我 似的。

17、似的。(2) as if 在表语从句中相当于在表语从句中相当于that: It seemed as if the meeting would never end. 会议看起来似乎没完没了。会议看起来似乎没完没了。 本文中本文中as if 的用法就是第二种。的用法就是第二种。It seemed as if the world was at an end!= It seemed that the world was at an end!= The world seemed to be at an end!It seems that sb= sb seems to be/do看来看来; 好像好像分子

18、分母分子大于一，分母用复数分子大于一，分母用复数三分之一三分之一one- third五分之三五分之三 three- fifths三分之二的地面为森林所覆盖三分之二的地面为森林所覆盖。这个班里五分之一的学生是女生。这个班里五分之一的学生是女生。(1) organize sb. to do sth.组织某人做某事组织某人做某事E.g. The teacher organized the students to have a discussion just now.The dog buried the bone in the ground.I buried myself in my studies.

19、bury oneself in= be buried in 埋头于埋头于;专心于专心于(2) dig out 挖掘；发现挖掘；发现(3) bury : A. to place in the ground 埋藏埋藏 B. to occupy (oneself) with deep concentration; absorb 专注于专注于Words : 1. quakevi. 颤抖颤抖, (, (因害怕或寒冷而因害怕或寒冷而) )发抖发抖 She quaked with fright. 她吓得发抖。她吓得发抖。( (地面地面) )震动震动 Our house is quaking. 我们的房屋在震

20、动。我们的房屋在震动。2. well adv. 好好, , 对对, , 满意地满意地; ; 友好地友好地, , 和蔼地和蔼地; ; 彻彻底地底地, , 完全地完全地 Do you eat well at school? 你在学校吃得好吗你在学校吃得好吗? ?夸奖地夸奖地, , 称赞地称赞地 They speak well of him at school. 学校里的人都称赞他。学校里的人都称赞他。有理由地有理由地, , 恰当地恰当地 You did well to tell him. 你告诉了他你告诉了他, , 做得对。做得对。adj. 健康的健康的; ; 痊愈的痊愈的 I dont thin

21、k he is really a well man. 我认为他并不是真正健康的人。我认为他并不是真正健康的人。良好的良好的; ; 正常的正常的; ; 令人满意的令人满意的 All is not well in this country. 这个国家的情况不能令人满意。这个国家的情况不能令人满意。interj. ( (用于表示惊讶用于表示惊讶, , 疑虑疑虑, , 接受等接受等) ) Well! Look at that amazing sight! 哦哦! !看那迷人的景色！看那迷人的景色！n. 井井, , 水井水井 They dug another well in the village. 他

22、们在村里又挖了一口井。他们在村里又挖了一口井。3. pipen. 管子管子, , 管道管道 Water is brought into our houses through pipes. 水通过水管送到我们的屋子里。水通过水管送到我们的屋子里。烟斗烟斗 My pipe has gone out. 我烟斗的火熄灭了。我烟斗的火熄灭了。管乐器管乐器, , 笛子笛子 He is playing a tune on his pipe. 他在用笛子吹奏一支曲子。他在用笛子吹奏一支曲子。vt. 以管输送以管输送 They piped oil yesterday. 昨天他们用管道输送油。昨天他们用管道输送油

23、。传送传送 Nearly all the shops have piped music. 差不多所有的商店都连续播放有线广播的差不多所有的商店都连续播放有线广播的音乐。音乐。吹哨子下令吹哨子下令( (表示欢迎表示欢迎) ) The admiral was piped aboard. 海军上将在欢迎他的哨子声中登舰。海军上将在欢迎他的哨子声中登舰。滚边滚边, , 镶花边镶花边 He piped “Happy Birthday” on the cake. 他在蛋糕上镶上了他在蛋糕上镶上了“生日快乐生日快乐”的字样。的字样。4. streamn. 小河小河, , 溪流溪流 Can you jump

24、across the stream? 你能跳过这条小溪吗你能跳过这条小溪吗? ?流流, , 一股一股, , 一串一串 A stream of people was going into the cinema. 一股人流走进影院。一股人流走进影院。水流方向水流方向, , 潮流潮流 He hasnt the courage to go against the stream of public opinion. 他没有勇气逆舆论潮流行事。他没有勇气逆舆论潮流行事。( (按能力分的按能力分的) )班级班级 She is in the A stream in her middle school. 她中学

25、时在她中学时在A A班。班。vt. & vi. 流流; ; 流动流动 Blood streamed from the wound of the soldiers. 血从士兵的伤口流出来。血从士兵的伤口流出来。Her eyes were streaming tears because of the movie. 她两眼正流着泪水。她两眼正流着泪水。vi. 飘扬飘扬; ; 招展招展 The flag of our country was streaming in the wind. 我们国家的旗帜在风中飘动。我们国家的旗帜在风中飘动。5. burstvt. & vi. 爆炸爆炸,

26、, 爆裂爆裂 If you get much fatter youll burst your clothes. 你要是再长胖就要把衣服撑破了。你要是再长胖就要把衣服撑破了。挤满挤满, , 充满充满 The town is bursting with tourists that summer. 今年夏天镇上到处都是游客。今年夏天镇上到处都是游客。突然打开突然打开 We had to burst the door open to rescue her. 我们不得不破门而入来营救她。我们不得不破门而入来营救她。突然发作突然发作, , 突然发生突然发生 The storm burst and we a

27、ll got wet. 暴风雨突然袭来暴风雨突然袭来, , 我们都淋湿了。我们都淋湿了。n. 爆炸爆炸, , 爆裂爆裂; ; 爆发爆发, , 突发突发 His appearance on the platform was greeted with a burst of applause. 他一登上台就博得了一阵热烈的掌声。他一登上台就博得了一阵热烈的掌声。 Expressions :1. right away 立刻，马上立刻，马上Tell him that Im coming right away. 告诉他我就这来。告诉他我就这来。Are you leaving right away with

28、out visiting her? 你不拜访她，马上就走吗？你不拜访她，马上就走吗？2. as if 好像，似乎好像，似乎She sang as if inspired. 她好像灵感受到引发而唱起歌来。她好像灵感受到引发而唱起歌来。Why doesnt she buy me a drink? It isnt as if she had no money! 她为什么不给我买一点饮料她为什么不给我买一点饮料? ?好像她没钱好像她没钱似的似的! ! 3. at an end 结束，终止结束，终止They wished the voyage at an end. 他们渴望航行结束。他们渴望航行结束。E

29、verything between them was at an end. 他们间一切都结束了。他们间一切都结束了。4. in ruins 严重受损严重受损, , 破败不堪破败不堪 The city lay in ruins after the earthquake. 地震之后地震之后, , 这座城市成为一片废墟。这座城市成为一片废墟。The country was laid in ruins. 这个国家处于毁灭状态。这个国家处于毁灭状态。5. dig out挖掘挖掘; ; 挖走挖走 The workmen dug out a deep channel for the water. 工人们挖出

30、一条深水沟。工人们挖出一条深水沟。The injured men have been dug out of the snow. 受伤人员从雪中被挖了出来。受伤人员从雪中被挖了出来。找出来找出来, , 发掘发掘 Why did you dig out all these old magazines? 你把这些旧杂志翻出来做什么你把这些旧杂志翻出来做什么? ?Quite a number of valuable details were dug out of libraries and archives by the group of researchers. 这组研究人员从图书和档案资料中查找出

31、一这组研究人员从图书和档案资料中查找出一批相当有价值的详细资料。批相当有价值的详细资料。匆匆地离开匆匆地离开 She didnt say where to go, just dug out. 她没有讲要到哪儿去她没有讲要到哪儿去, , 只是匆匆地走了。只是匆匆地走了。6. a number of 许多的许多的 A number of new products have been successfully trial-produced. 许多新产品已试制成功。许多新产品已试制成功。A great number of problems have arisen. 出现了许多问题。出现了许多问题。St

32、ructures 在复合句中在复合句中, ,修饰某一名词或代词修饰某一名词或代词, ,用做定用做定语的从句叫定语从句。被定语从句所修饰的词语的从句叫定语从句。被定语从句所修饰的词叫叫先行词先行词; ;定语从句必须放在先行词之后定语从句必须放在先行词之后; ; 引导定语从句的关系代词有引导定语从句的关系代词有who, whom, who, whom, that, which, whosethat, which, whose和关系副词和关系副词when, where, when, where, why.why.Usages主语主语宾语宾语定语定语人人whothat(whom)(that)whose

33、物物whichthat(which)(that)whose找出先行词以及关系词引导的句子找出先行词以及关系词引导的句子1.The foreigner who visited our class yesterday is from Canada.2.A new master who will teach you German will come tomorrow. 把它们分成两个句子把它们分成两个句子1.The foreigner is from Canada. The foreigner visited our class yesterday.2.A new master will come

34、tomorrow. A new master will teach you German.( )( ) 关系代词关系代词which, who, whom, that, whose,与与关系副词关系副词where, when, why的区别的区别: 关系代词直接关系代词直接代替先行词代替先行词,关系副词代替介词短语关系副词代替介词短语. The factory _ I visit is big. The factory is big. I visit the factory. The factory _ I work is big. The factory is big. I work the

35、factory._( )_( )inin the factory是介词短语是介词短语,表地点表地点,所以用所以用where或或者者in which代替代替.whichwherein whichThis is the reason _ he told me last night.This is the reason.He told me the reason last night.This is the reason _ he was late.This is the reason.He was late the reason._( )which_( )whyforwhy =for which1

36、.定语从句中的主谓一致定语从句中的主谓一致 关系代词作定语从句的主语时关系代词作定语从句的主语时,从句谓语从句谓语动词的人称和数要与先行词一致动词的人称和数要与先行词一致;先行词代表先行词代表一个句子作主语时一个句子作主语时,从句谓语用第三人称单数从句谓语用第三人称单数形式形式.The building which _ (stand) near the river is our school.stands(1) 当先行词是当先行词是anything, something, nothing, all, few, little, none, all 等不定代词或被等不定代词或被all, any,

37、every, each, no, some等修饰时。等修饰时。(2) 先行词被先行词被the only, the very, the last修饰时。修饰时。(3) 先行词被序数词或形容词最高级修饰时。先行词被序数词或形容词最高级修饰时。(4) 先行词既有人又有物时。先行词既有人又有物时。He is the only person _ treats me as a friend here.that2.下列情况用下列情况用that 不用不用which 4. 分隔定语从句分隔定语从句 有时为了句子的平衡有时为了句子的平衡,定语从句与先行词常被定语从句与先行词常被插入其他成分。插入其他成分。 The

38、 day will come _ we shall celebrate Womens Day.when3. 下列情况用下列情况用which 不用不用that (1) 引导非限定性定语从句时。引导非限定性定语从句时。(有逗号有逗号隔开隔开) (2) 在在 “介词介词+which/whom” 结构中。结构中。 This is the market at _ I bought the baby carriage last Sunday.which5. (the) one of 结构结构: one of +n.(pl.) 后跟定语从句时后跟定语从句时, 从句中从句中的谓语动词用复数的谓语动词用复数,但

39、当有但当有the only修饰修饰one of +pl.时时,其后跟的定语从句中的谓语动词用其后跟的定语从句中的谓语动词用单单数数。He is the only one of the students who _ (have) been a winner of scholarship for three years.has1. The fan which you want is on the desk.2. The man who brought our textbooks here yesterday is in the next room.3. The letter which I rec

40、eived yesterday is from my sister.4. The play which we saw last night was wonderful.1. The fan is on the desk. You want the fan.2. The man is in the next room The man brought a textbook here yesterday.3. The letter is from my sister. The letter was received by me yesterday.4. The play was wonderful.

41、 We saw the play last night.1.The man _is talking to me is a friend of my fathers.2.The school _is famous here has a long history.3.I live in the house _windows face south.4.He is the boy _ we are waiting for.that/whothat/whichwhosewho/whomHe who laughs last laughs best.All is well that end well.Fri

42、endship is like health, the value of which is seldom know until it is lost.1. invitation n. 邀请邀请invite v. a letter of invitation 一封邀请信一封邀请信2. give a speech 作报告作报告/演讲演讲 3. Office of the City Government市政府办公室市政府办公室4. be/feel proud of 对对感到自豪感到自豪 = feel/find/take pride in 5. open a new park 开放新的公园开放新的公园

43、 6. in honor of 向向表示敬意表示敬意; 为了纪念为了纪念 7. as you know 如你所知如你所知 8. on that special day 在那个特殊的日子在那个特殊的日子 9. write an article for 为为写文章写文章10. write an outline 写提纲写提纲11. disaster-hit areas 受灾区受灾区1. The man was sleeping downstairs when the earthquake happened.2. Many huge buildings were shaking-bricks were

44、 falling.3. A lot of people were buried under the ruins.4. Some cows were killed in the fires.5. He felt safer because he got away easily.1.When did the earthquake begin?2.What did the speaker do after he woke up?3.What did he see and hear outside?4.What happened to the man next to him?5.How did he

45、get away from the city?6.Which of your adjectives describe the mans feelings most closely?1. The earthquake began around 5 oclock in the morning.2. The speaker rushed outside as soon as he woke up.3. When he got outside he thought the world had come to an end. He heard people running everywhere and

46、bricks falling down from buildings. There were big fires too.4. The man next to him was killed by bricks. falling from a nearby building.5. He got away from the city by boat.6. Very shocked, devastated.earthquake 地震地震 steam 蒸汽蒸汽 quake地震地震 dirt污垢污垢 right away 立刻马上立刻马上 ruin 废墟废墟 well 井井 in ruins 破败不堪破

47、败不堪 pipe 管管 suffering 苦难苦难 burst 爆发爆发 extreme极度的极度的injure损害伤害损害伤害 event事件事件 destroy毁坏毁坏as if 好象好象 brick砖砖 at an end 结束结束 dam水坝水坝 nation民族国家民族国家 track轨道足迹轨道足迹canal 运河运河 useless 无用的无用的-useful use v. n. have time to do 有时间做某事有时间做某事 happen to do 碰巧做某事碰巧做某事shake hands with sb 握手握手 burst into tears/ laugh

48、ter in ruins 成为废墟成为废墟 cut across 穿过、横穿穿过、横穿blow away 吹走、刮走吹走、刮走 fall down 倒塌倒塌rescue workers 救援人员救援人员 be pleased to do 乐意做某事乐意做某事make/ give a speech 发表说发表说 judging.from 根据根据来判断来判断1. She brought with her three friends, none of _ I had even met before. (2009，全国卷，全国卷) A. them B. who C. whom D. these 解析：考查非限制性定语从句。句意为：解析：考查非限制性定语从句。句意为：“她带了三个朋友，之前我一个也没有见她带了三个朋友，之前我一个也没有见过。过。”介词介词of后接表示人且作宾语的关系代词后接表示人且作宾语的关系代词应该用应该用whom。C2. What do you think of teaching, Bob? I find it fun and challenging.