北师大版选修七Unit21-lesson3-Epidemic-explained课件教学内容

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北师大版高中英语选修7Unit 21 Lesson 3 Epidemics Explained 课件1

北师大版高中英语选修7Unit 21 Lesson 3 Epidemics Explained 课件1

Unit 21 Lesson 3 Epidemics explainedTeaching aims1.words and phrases:nguage points in the text3.reading strategies4.exercises about text5.vocabulary:synonymsTeaching timeTwo periods(两课时连堂)Teaching processStep 1 Revisionhave a diction about the new words in lesson 2Step 2 learn the new words of lesson 31.ask some students to read the new words first and correct their pronunciation2.play the tape and have them read after the tape3.give them a few minutes to read the new words freely, tell them if they can’t read the words, encourage them to ask the teacher .step 3 reading1.ask students read the key words in exercise 1 and guess their meaning.2.let them discuss in pairs which of these diseases can be or are epidemics2.do exercise 2 by themselves in pairs.then check their answers on page 1033.let the students read Reading Strategies.4.students then read quickly through the text to get a general idea of it.5.students complete the text with the missing paragraphs.6.check their answers by having individuals read out the complete text.7.give students a few minutes to do exercise 4.step 4 language points1.epidemics explained2.epidemics throughout history3.with new health threats on the rise.4.look at5.since the beginning of life on earth6.as long as7.as early as 430 BC8.on record9.be attempt to do sth.10.sweep through11.die from the disease12.be known as13.a lack of14.provide the perfect conditions for..15.in highly populated areas all over Europe16.one half to lne third of the population was lost to the Black Death17.it is believed to be…18. die of the fludie in the war19.begin with,end with20.the number of21.such as22.natural defences23.be harmful to24.make up25.expand acrossstep 5 vocabulary:synonyms1.exercise 6a)ask the students to do the exercise individually.b)then check their answers2.exercise 7.a)ask some students to come to the blackboard to do the exerciseb)check their answersstep 6 Homeworkcopy the new words。

北师大版高中英语选修7Unit 21 Lesson 3 Epidemics Explained 课件2

北师大版高中英语选修7Unit 21 Lesson 3 Epidemics Explained 课件2

Lesson 3 英语常用同义词辨析1agree with ,agree to ,agree on 用法agree with ,agree to ,agree on 都可以表示同意;agree to 一般表示个人同意,而agree on 表示对...取得一致意见,达成共识。

agree with 还可以表示与(气候或食物等)相适合.1. They agreed on the project at last.最后他们就这项工程达成了共识。

2. I agree with you =I agree with what you said.我同意你的话。

3. We agreed on a price for the car.我们商定了这辆汽车的价格。

4. The climate here doesn’t agree with me .我不适应这儿的气候。

5. Do you agree to that plan?你同意那个计划吗?6. He has agreed to the arrangement?他已经同意了那个安排。

7. Do you agree with what I have just said ?你同意我刚刚说的吗?8. Your story agrees with what I have heard.你说的话与我听到的一致。

agree with 后面一般跟某人或是某人说的话;后面还可以跟words。

agree to 后面一般跟建议、议案、计划、安排等。

agree on 后面一般跟表示具体协议的文件、计划等。

determine 与decide1. We determined to get the work done before May Day.我们决定在五一之前把工作做完。

2. He has determined that nothing can prevent him doing what he wants to do .他已经决定没什么能阻止他想做的事情。

Unit 21 Human Biology Lesson 3 Epidemics Explained 课件-北师大版高中选修7精品

Unit 21 Human Biology Lesson 3 Epidemics Explained 课件-北师大版高中选修7精品

[归纳拓展] faith n.信心,信任;诚意,善意 have faith in sb.信任某人/对某人有信心 lose faith in对……失去信心/不再相信 in good faith真诚;诚心诚意地 faithful adj.忠诚的;诚实的,如实/一丝不变的;可信 任的 be faithful to忠实于,忠诚于 faithfully adv.准确地;如实地;忠实地
(3)—The man is said to have been to many places.
—No wonder that he knows so much. ——据说那人去过很多地方。 ——难怪他知道的那么多。
4.It struck near the end of the First World War and left
families mourning worldwide. 它爆发于第一次世界大战接近尾声时,使全球的家庭陷
入了一片哀声之中。
[归纳拓展] 本句中使用了“leave+宾语+宾补”的结构,其常见句 式结构为:
doing(表示与宾语之间是主动关系,且具
有正在进行的含义)
leave+宾 语+宾补
done(表示与宾语之间是被动关系) to do(表示与宾语之间是主动关系,
他建议再举行一次会议,以表示他的诚意。
(2)The lovers promised to be faithful forever.
这对情人互相许诺永不变心。
Modern communication technology and medical research techniques allow health experts all over the world to unite,share knowledge,and work together without pause to help put SARS behind us.

高中英语Unit21HumanBiologyLesson3EpidemicsExplained课件北师大选修7

高中英语Unit21HumanBiologyLesson3EpidemicsExplained课件北师大选修7

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活学活用 语法填空 The government has decided to try to wipe in our country.
out
this disease
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2.One of the earliest epidemics on record happened about 500-550 AD when the Roman emperor at the time was attempting to rebuild the Roman Empire. 历史上有记载的最早的流行病之一发生在公元500~550 年,当时的 罗马皇帝正在试图重建罗马帝国。 剖析 本句是一个复合句。when引导定语从句,修饰500-550 AD。 考点一at the time 当时 【高考典句】At the time,people did not have dishwashers in their homes. 当时,人们家中还没有洗碗机。 I was living in France at the time. 我当时住在法国。




二、完成短语 wipe 1.彻底毁灭 out 2.席卷 sweep through to 3.达到 up as 4.像……一样长 as long to 5.对……有害 be harmful to 6.导致 lead




三、阅读EPIDEMICS THROUGHOUT HISTORY,将下列事 件按时间顺序排列 A.One of the earliest epidemics swept through North Africa,the Middle East and Europe about 500-550 AD. B.Experts united to stop SARS spreading. C.The Spanish Flu killed up to 50 million people in 18 months. D.Over nine months,the number of global cases of SARS passed 8,000 and 774 people died. E.The Black Death spread in the 1330’s in Asia. 正确顺序为: 答案:A→E→C→D→B

2017--2018学年北师大版选修七Unit 21 human biology lesson 3 Epidemics Explained学案 (1)

2017--2018学年北师大版选修七Unit 21 human biology lesson 3 Epidemics Explained学案 (1)

Unit 21 human biology lesson 3 Epidemics Explained学案1.Having_killed_up_to_50_million_people_in_18_months,_with a tendency to strike the young and fit rather than the old, the Spanish Flu is believed to have been the most acute epidemic in history.西班牙流感在18个月的时间里就杀死了5 000万人,它有传染年轻人和身体健康的人而不是老年人的倾向;西班牙流感被认为是人类历史上最严重的传染病。

(1)having killed ...是现在分词的完成式,现在分词强调明显先于句子谓语动词的动作,常与for ... years, many times等时间状语连用。

Having lived with her for 5 years, he knows her very well.与她一起生活了五年,他非常了解她。

(2)现在分词完成式的否定形式为:not having done; 被动形式为:having been done。

Having been told many times, he still repeated the same mistake.尽管被告诉过很多次了,他仍然犯同样的错误。

Not having checked the watch the night before, they found it stopped when they woke up.由于前一天晚上没有检查表,他们醒来时发现它已经停了。

1.单句语法填空①Having_finished (finish) his homework, he went out playing with others.②Having_been_told (tell) that he didn't pass the exam, he felt extremely sad.③Having_been_shown (show) around the school, we had a rest.2.完成句子④我没有见过他,所以说不出他的模样。

北师大版高考英语选修7同步检测 Unit 21 Period 3 Lesson 3 Epidemics Explained

北师大版高考英语选修7同步检测 Unit 21 Period 3 Lesson 3 Epidemics Explained

Period Three Lesson 3 Epidemics ExplainedⅠ.单词自测1.rebuild vt.重建2.prohibit vt.禁止prohibition n.禁止;禁令3.unite vt.联合;团结;统一4.pause n.停顿;暂停5.statistics n.统计资料;统计数字6.symptom n.症状7.routine n.常规;惯例8.press n.新闻界;报界9.foresee vt.预见10.mourn vi.&vt.感到悲痛;表示哀悼11.underline vt.表明重要性;强调12.thorough adj.彻底的;细致的13.teamwork n.协作;配合14.faith n.信心faithful adj.忠诚的;可信任的Ⅱ.短语自测1.wipe_out彻底毁灭2.on_record记录在案的,有记录的3.do_trials_on做实验4.allow_sb.to_do_sth.允许某人做某事5.be_believed_to_be...被认为是……6.up_to达到(某数量、程度等)7.be_lost_to失去;没有8.stop_sth.in_its_tracks终止;消灭1.Since the SARS epidemic ended,scientists have_been_doing trials on treatments to prohibit any future outbreaks.自从“非典”疫情结束后,科学家们就已经着手做治疗实验以防止将来再次爆发。

2.Many people fear it could be the next global epidemic,especially as scientists who studied tissue from the bodies of people who died of the 1918 Spanish Flu proved that Bird Flu is a modern adaptation of the same virus.许多人担心它会成为下一个全球性的传染病,特别是在一些科学家研究了死于1918年西班牙流感的人的尸体组织后,证明了禽流感是同一种病毒的现代变异体。

2017--2018学年北师大版选修七Unit 21 human biology Lesson 3 Epidemics Explained学案1

2017--2018学年北师大版选修七Unit 21 human biology Lesson 3 Epidemics Explained学案1

Unit 21 Lesson 3 Epidemics Explained学案Epidemics throughout history 第二课时教学目标(Objectives)1.分析长难句,理解课文。

2.掌握重点词汇,短语和句型。

情感态度了解传染病对人类的危害,进一步认识良好生活习惯的重要性。

重点和难点:1.识别课文结构,用自己的话归纳信息。

2.分析课文中的长难句,提高阅读能力教学方法Task-based Approach教具Dictionary, Multimedia and Blackboard教学过程Step1 Greetings and the daily routineGreet the whole class .Let them read the encouraging sentence on the blackboard together twice.Regret is just a waste of time.It neither changes the past nor creats the future.So work hard now.Step2 Check the new words in this passageDicate new wors of this passage.(We have leant and recite the new wors early in the morning.)Let two volunteers write on the blackboard.Step3 学习重点词汇和短语,分析长难句First,work in groups to learn some useful phrases and translate some sentences.1.wipe out(1)彻底摧毁;消灭The plague once could wipe out a village.鼠疫曾一度可以夺走整村人的生命。

高中英语北师大版选修七 Unit21 Lesson 3 Epidemics Explained Re

高中英语北师大版选修七 Unit21 Lesson 3 Epidemics Explained Re

The Spanish Flu
a. also called the Great Flu Epidemic
b. the most acute Epidemic
c. struck near the end of World War I
d. more death of the flu than that in the war
worldwide.
(T )
5) Epidemics can wipe out up to half of
the population in urban areas. ( T )
6) More people died of a flu epidemic in
1918/1919 than died in World War I.
A
Paragraph 3
B
Paragraph 5
C
Paragraph 8
D
Paragraph 10
En the text carefully again and
finish the table with your partner.
Number of
Time Epidemic Areas
SARS
a. most people having no natural defenses against the disease
b. yet , it has been forgotten by history
c. completely new to physicians
Complete these sentences about the text in your own words.
Work in groups of four and talk about: How did you feel after reading the article?

北师大版选修七Unit21-lesson3-Epidemics-explained教案

北师大版选修七Unit21-lesson3-Epidemics-explained教案

Unit 21 Human BiologyLesson 3 Epidemics explained 教案教学设计, 目的和思路、1. 教材内容说明Epidemics explained 是北师大版教材选修模块7 的最后一个单元中的阅读课,介绍瘟疫在历史上的流行和发展, 文章生词量大, 有一定的教学难度.2. 教学目的学生通过阅读课文, 了解文中一些科普知识, 学会描述瘟疫的特点, 掌握阅读科普文章的一些方法3. 课堂形式提倡学生自学, 以检查预习, 合作讨论, 你说我猜的形式学习, 体现学生学习的主动性, 还课堂以学生4. 教材内容的加工处理用相关插图, 图表等直观的教学形式, 让学生能更快理解课文; 必要的阅读指导,有利于学生技巧的形成; 相关文章的阅读, 能扩大学生知识面; 一些直观的教具如红丝带和抽象的音乐, 希望培养学生的人文素质和高尚情感教学过程简述1. 布置学生预习包括读单词, 找出文中数字的含义, 简单口头描述各次瘟疫的特点,做好文中的一道涉及段落补全的练习2. 课文导入包括简介和听英文歌曲“ Tears in heaven 讨”论, 死亡的原因, 以及有哪些常见的瘟疫3. 课文的阅读和学习Step 1: 阅读标题, 预测文章主题,同时找出文中主要瘟疫Step 2: 讨论数字在文中不同的含义, 进一步了解和熟悉课文Step 3: 进一步阅读文章, 了解造成瘟疫的元凶--- 病毒;描述瘟疫的传播途径, 找出各次瘟疫造成的巨大影响; 描述和猜测不同的瘟疫Step 4: 完成段落补全练习, 介绍相关方法4. 点出阅读技巧5. 读一段有关爱滋病对儿童危害的文字, 提示我们应该做点什么课堂的延伸和升华三感受体会在教学过程存在一些问题, 最主要的是课堂时间的把握和安排. 在设计中内容太多在课堂上有些环节没有把握好, 如讨论数字用时过多; 提问学生差生面多, 造成进展不顺全班朗读课文也费时太多.下面谈谈我本人对这次活动的感想:1. 还课堂与学生由于面临着高考的压力, 我们平时的教学中有时舍不得拿出时间让学生在课堂上说讨论, 而且要设计直观有效的练习形式也相对费力; 可是英语课上我们还是可以还课堂与学生, 尽量让他们自己来学会学懂2. 教师的工作真的是只有更好, 没有最好我的教案前期后后修改了几次, 我自己都觉得惊奇: 一堂课,可以这样上, 也可以那样上, 前后顺序可以不一样, 教学重点可以不一样, 课堂形式可以有天壤之别---那些天我满脑子都在想这堂课要怎么上呢? 而你自己想的和学生的实际情况也不一定想府, 你觉得感动的歌学生可能听不懂, 这个班学生都会的问题, 另一个班的学生会表现出不知所措(如知道病毒造成瘟疫, 2班学生感到困难, 这是我没有料想到的)---这份工作真的是要有极大的热情才能做3. 我学会了许多东西我在和大家的讨论中, 进一步地思考课堂结构和课堂节奏的安排问题; 由于这一次公开课的主题是学法研讨, 我更多地关注学生在课堂上的表现; 在孔艳焰老师帮我润色修改课件的过程中, 我学到了许多电脑知识--- 我还了解了自己的许许多多不足之处, 明白自己努力的方向4. 我心中充满了感激我感谢学校安排的这次活动, 使我们有学习交流的良好契机: 我感谢高中学段英语组全体老师对我的信任和无私的帮助, 使我有了锻炼和提高的机会; 希望大家多多指出我的不足, 使我能够不断进步; 也希望我们要更多的机会学习交流, 把我们的工作越做越好.Teaching Aims:To read an article about epidemicsTo improve the Ss ' readin g ability To improve the Ss ' speaking ability Learning method: Concluding Teaching procedure:Step 1: AddressingStep 2:Lead-in1. Listen to the song “ Tears in heaven ” .2. What' s your feeling after hearing the song?3. Why was the singer so sad?4. What else may cause death?5. Epidemics can cause more deaths than anything else.Step 3 : Reading Strategies: how to read a science article1. Read the title carefully(1) To present question 1 What' s the main idea of the text?A. New health threats is on the rise.B. A lot of epidemics happened in history.C. SARS used to be out of control, now people are trying to stop it on the track.D. We should pay more attention to our health.(2)We can predict what will happen in the text from the titleIn this text, some epidemics in the history will be talked.(3)Give more titles and ask the Ss what will be talkedA. EpidemicsB. Epidemics and economyC. SARSD. The history of the Black Death2. Read the text fast and get the gen eral idea and basic in formati on(1) To present question 2Read the following graphic and try to tell which epidemics are described? (To seethe PPT.)(2) We will try to know some basic information about epidemics in history.3. Read the text carefully and understand related scienee termsIn this text, a lot of medic ine words are invo Ived.(1)To prese nt questi on 3What does the word “ affect ” medfi paragr5ph?A影响B效果C感染D死亡(2)Now read the text carefully and complete the sen ten ces using medici ne words in the text:1. Bacteria and _________ (病毒)have been around since the beginning of life onEarth.2. It ' s importatri look at the ___________ (传播)of diseases throughout history todiscover the _________ 原因)and _______ 影响)of epidemics.3. Another epidemic _________ (开女台)and _______ 传播)in similar conditionswas the Great Flu. It _________ (侵袭)n ear the end of the first World War and___________ 持续)after the war.4. Doctors weren ' t sure how to ________ 治疗)or _________ (预防)it and sincemost people had no natural ____________ (防御)against the disease, it washarmful to doctors.5. One half to one third of the population was _________ 死于)to the Black Death.Less populated areas were less severely _______ 感染).6. SARS epidemic quickly ___________ (扩大)across the globe. Health expertsworked together to __________ 阻止)the virus in its ________ (路径).7. It _________ (席卷)North Africa, the middle East and Europe.(3) While doing these ki nd of exercise, expla in some words such as“ trac k4. Try to know more scienee knowledge through reading the text carefully(1) To prese nt questi on 4The Black Death spread rapidly in Asia and Europe because ________A It was the terrible bub onic plague that retur ned.B There were so many people in these areas.C At that time, people didn ' t know how to treat it.D People suffered from the bad climate , the war and hunger. There were so manypeople and they didn ' t have daily health care.(2) To show a picture to dem on strate(3) To an swer more questi ons about scie nee kno wledgeWhy do we say epidemics have bee n with us for thousa nds of years? (ppt)Why was bubonic plague one of the key cause in the fall of the Roman Empire? How did SARS spread from Hong Kong to Can ada, Viet nam and Sin gapore?Why did many doctors and nurses become ill with SARS ?5. To figure out the development of the text(1) To in troduce seque ncing exercise (ppt )(2) To prese nt questi on 5Read the whole text and match the five paragraph(A-E) with gaps 2,4,7,9 and 11 in the text(3) Read the text with gaps to get the general idea and see how it develops(4)To an alyze the begi nning and ending words of each paragraph6. ConclusionRead (Find ) the title carefullyRead the text fast and get the gen eral ideaRead the text carefully and un dersta nd related scie nee termsTry to know more scie nee kno wledge through readi ng the text carefullyTo figure out the developme nt of the textStep 4:Read the text aga in and give your own questi ons using the strategies we have lear nt1. Show an example about giving questi onsQuesti ons about gen eral ideaWhat can be in ferred from the text?A. Epidemics develops with the development of human beingsB. An old epidemic will cause another oneC. Epidemics may disappear one day due to the development of medical scieneeD. Epidemics can cause a lot of deaths.2. Show the Ss ways to ask questi onsThe purpose of the writer is to---The story tells us that----Accord ing to the text, -----It can be learned from the text that----The best title for the text would be---Which of the followi ng stateme nt is true (false)?Arrange the eve nt in the text accord ing to the correct order.After read ing the text, we know that---The word ---'” in the text means--What' s the Chin ese meaning of these words?The word “” can be replaced byWhy----- ?What is the reas on for ---- ?What is----?We lear n from the text that ----3. The Ss are asked to give out their own questi ons in groupsGroup 1-2: questi ons about basic details in the textGroup 3-4: questi ons about wordsGroup 5-6: questi ons about scie nee kno wledgeGroup 7-8: questi ons about seque ncing4. Ask the Ss to change their questions and answer it.Step 5: HomeworkRead another science article and give 5 questions of your ownTears in HeavenWould you know my name if I saw you in heaven?Would you feel the same if I saw you in heaven?I must be strong and carry on'Cause I know I don't belong here in heaven...Would you hold my hand if I saw you in heaven?Would you help me stand if I saw you in heaven?I'll find my way through night and day'Cause I know I just can't stay here in heaven..Time can bring you down, time can bend your kneesTime can break your heart, have you begging please , begging please... Beyond the door there's peace I'm sure And I know there'll be no more tears in heaven...Good question: 1o scoreOrdinary question: 7 score Bad question: 4 score Good answer: 6 score Ordinary answer : 4 score Wrong answer: 2 score歌手简介:1945年3月30日Eric Patrick Clapton 出生于英国萨里郡的瑞普雷在演出过程中逐渐形成了自己的蓝调风格,是摇滚乐坛中首屈一指的吉他大师.五十多岁方育得一子,然造化弄人,稚龄爱子竟从纽约数十层高的公寓阳台意外摔下身亡,这个打击几乎让他再度一蹶不振,不过将近50岁的Eric Clapton将他思念之苦寄情歌中,于是产生"Tears In Heaven"这首歌,它首先被收录于电影《迷途枷锁》(Rush)的原声带中,他的歌声苍凉悲壮却又柔情似水,能够净化人的灵魂。

Unit 21 Lesson 3 Epidemics Explained 教学设计-优质公开课-北师大选修7精品

Unit 21 Lesson 3 Epidemics Explained 教学设计-优质公开课-北师大选修7精品

Unit 21 Lesson 3 教学设计Teaching Aims1. To learn the words and phrases of the text2. To practice the reading strategies3. To complete the exercises about the text4. To learn vocabulary: SynonymsTeaching Important & Difficult Points:To practice the reading strategiesTeaching Aids: students’ books,picturesTeaching Procedures:Step 1 New words & expressions1. Introduce the skills of memory to Ss as a reference.2. Measures for teaching & learning①Ask some students to read the new words first and correct their pronunciation②Play the tape and have them read after the tape③Give them a few minutes to read the new words freely,tell them if they can’t read the words,encourage them to ask the teacher .Step 2 Reading1. Ask Ss to read the key words in Ex. 1 and guess their meanings.2. Let Ss discuss in pairs which of those diseases can be or are epidemicsAnswers: AIDS,flu3. Do Ex.2 by themselves in pairs. Then check their answers on page 1034. Let the students read Reading Strategies.5. Students then read quickly through the text to get a general idea of it.6. For Ex.3. Ss complete the text with the missing paragraphs.Answers: 3.A 5.E 8.C 10.D 12.B7. Give students a few minutes to do Ex.4Step 3 Language Points1. on record 记录在案,备案He ran the fastest race on record.他跑出了记录在案的最好水平。

北师大版Unit21 Lesson 3 Epidemics Explained知识点

北师大版Unit21 Lesson 3 Epidemics Explained知识点

tablets to treat it.
9. With all the international effort being made,we have faith
in stopping a Bird Flu epidemic in 10.
its
tracks.
-12-
Section Ⅲ Lesson 3 Epidemics Explained
9. thorough complete
10. underline to draw a line under a word,etc;to emphasis
-4-
Section Ⅲ Lesson 3 Epidemics Explained
新知导学
答疑解惑
随堂练习
一二三四五六七
三、词汇拓展
1. rebuild vt.重建→ build vt.建造
8. faith n.信心;信任→
faithful adj.忠实的→
faithfully 忠实地
-5-
Section Ⅲ Lesson 3 Epidemics Explained
一二三四五六七
新知导学
答疑解惑
随堂练习
四、词组互译
1.
wipe out
2.
up to
3.
refer to
4.prohibit sb. from doing sth.
-9-
Section Ⅲ Lesson 3 Epidemics Explained
一二三四五六七
新知导学
答疑解惑
随堂练习
5.What kind of people did the Spanish Flu strike most? B A.Women. B.The young and fit. C.The old. D.The weak.

高中英语Unit21lesson3EpidemicsExplained课件北师大版选修7

高中英语Unit21lesson3EpidemicsExplained课件北师大版选修7

1….the beginning
life
Earth…(para.1)
2….25% and 50%
the area’s population died
thedisease…Fra bibliotekpara 3)
3….was one
the key causes
the fall
the
Roman Empire…(pare 3)
to begin with首先;第一点〔理由〕 Eg. We can't go. To begin with, it's too cold. 我们不能去。首先,天太冷了。
end up with 以告终 Eg. He ended his letter off with good wishes to his friend.
3.Epidemics have affected historical events.
4.It takes years for a disease to spread world wide.
5.Epidemics can wipe out up to half of the population in highly populated areas.
Now use the strategies to match the five paragraphs (A-E) with gaps 2,4,7,9 and 11 in the text.
The answers:
Paragraph A Paragraph B Paragraph C Paragraph D Paragraph E
高中英语
Unit21lesson3EpidemicsE xplained课件北师大版选

北师大版选修7Unit21Period3EpidemicsExplained

北师大版选修7Unit21Period3EpidemicsExplained
20._______(unite)we stand;divided we fall.
21.If the vaccination(接种疫苗)isn't done effectively,the disease will spread at an_______(alarm)rate.
22.The Great Wall has been_______(rebuild)several times since the Qin Dynasty.
4.The host of the TV show spoke almost without_______(暂停)for breath.
5.Only_______(协作)will enable us to get the job done on time.
6.You are most likely to keep your weight down if you include walking into your daily_______(常规).
9.You must pay special attention to the u______words and phrases.
10.The s______show that house prices have gone up by 20%over the years.
二、选用适当得单词或短语补全句子
18.To keep himself informed of current affairs,Grandpa usually spends some time___________newspapers over breakfast.
三、用单词的适当形式完成句子
用所给词的适当形式填空
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Gap 2 Gap 4 Gap 7 Gap 9 Gap 11
Complete these sentences about the text in your own words
Voice your opinion:
How did you feel after reading the article? Tell the class
6.as long as只要, 在...的时候;既然;以…为条件 Eg. You may borrow this book as long as you promise to give it back.
只要你答应归还,你就可以把这书借走。 As long as you've offered, I accept.既然你已给我,我就接受. I will cooperate as long as I am notified on time.只要及时告诉我,我就会合作.
Unit 21 Human Biology Lesson 3 Epidemics Explained
Look at the Key Words. Which of these diseases can be epidemic?
AIDS Cancer Headachanguage points
1.epidemics explained解释传染病 epidemics n.流行[传染]病, 时疫. (风尚等的)流行; (流行病的)蔓延 adj.传染[流行性]的
cholera epidemic霍乱流行 mass epidemic大流行; 集体流行 Eg. Violence is reaching epidemic levels.暴力达到了流行的程度。
6.More people died of a flu epidemic in 1918/1919 than died in World War I.
Sequencing of in formation:
1.read the text with gaps to get the general idea and see how it develops. 2.Read the sentences before and after the gaps to give you an idea of what the beginning or end of the missing paragraph might refer to. 3.Read the missing paragrapphs and look for these references. 4.If a paragraph doesn’t seem to fit, you may have made a mistake, so carefully reread each paragraph.
Now use the strategies to match the five paragraphs (A-E) with gaps 2,4,7,9 and 11 in the text.
The answers:
Paragraph A Paragraph B Paragraph C Paragraph D Paragraph E
vi.升起, 起身, 发源, 起义, 高耸, 增长, 上升, 复活 vt.使飞起
4.look at v.看, 考虑, 着眼于;回顾
5.Bacteria and viruses have been around since the beginning of life on earth 自从地球上有了生命,便有了各种细菌和病毒.
3.Epidemics have affected historical events.
4.It takes years for a disease to spread world wide.
5.Epidemics can wipe out up to half of the population in highly populated areas.
7.as early as 430 BC早在公元前430年 as early as早在
8.on record adv.记录在案, 公开宣布的;记录下来的 Eg. the coldest winter on record有记录以来最冷的冬天
9.attempt to do sth. attempt n.努力, 尝试, 企图 vt.尝试, 企图
Eg. The boys attempted to leave for camping but were stopped by their parents. 男孩子们想去野营但被他们的父母们拦住了。 She made an attempt to cook the dinner.她试着做这顿饭。
10.sweep through sweep v.扫, 打扫, 清扫, 席卷, 冲光, 扫过, 掠过
Epidemics:
Work in pairs. Do you think these statements are true(T) or false(F)?
1.TB and flu kill millions of people every year.
2.Most of diseases are very new.
2.epidemics throughout history历史上的传染病病例 throughout prep.遍及, 贯穿 adv.到处, 始终, 全部
Eg. The road is kept open throughout the year.这条路全年开通.
3.with new health threats on the rise. 对人类健康造成威胁的因素在不断增加。 rise n.上升, 增加, 上涨, 高地, 小山, 发生, 出现
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