Unit 9 Lesson 3 第2课时（ppt课件）-2023新北师大版（2019）《高中英语》选择性必修第三册.pptx

1、Unit 9 Human BiologyLesson 3 Epidemics ExplainedPeriod 2RevisionHomework CheckSearch online in groups and find some information about epidemics in China or Asia.Report your information to the class.She made us take down all the posters.ObservingShe decided to take over all businesses.She feels ready

2、 to take on new responsibilities.Study the examples and pay attention to the words in bold.What are the words in bold?Phrasal Verbs 短语动词(Phrasal Verbs)是由两三个单词组成的动词，可以是及物的(带宾语)，也可以是不及物的（不带宾语）。如：I get up early even at the weekend.I get over the difficulties in the task.短语动词比较复杂，很多短语形式相似意思却不同，如：take do

3、wn,take over,take onExploring the rules短语动词短语动词Learn the key points.有的短语动词中间可以插入名词，有的则不能。Exploring the rules短语动词短语动词 (1)可拆分的短语动词，如：I forgot to turn off my computer when I left the office.I forgot to turn my computer off when I left the office.(2)不可拆分的短语动词，如：I came across an interesting article in th

4、e newspaper.Im looking forward to spending time with my sister.学习短语动词的困难在于：没有规则确定短语动词是及物或不及物，可拆分或不可拆分，必须逐一学习。Exploring the rules短语动词短语动词verbexamplesgoaway,around,with,without,against,under,over,for,in for,through,through with,offgetover,through,in,into,on,with,down,at,down with,out of,away from,alon

5、g,along withcome along,with,over,into,out,out with,by,down with,on,acrossExploring the rulesWord BuilderPhrasal Verbs(2)atintooverup withthroughunder upaway(The prepositions and adverbs may be used more than once.)gogetcomeChoose prepositions or adverbs in the box to make phrasal verb with the three

6、 verbs in the Word Builder.at,into,over,through,up,awayat,into,over,through,up,awayat,into,over,up with,under,up,awayExploring the rulesgo at sb=attack sb 攻击某人 e.g.They went at each other furiously.go into sth 详细调查(或研究)某事 e.g.We need to go into the question of costs.go over sth (1)仔细检查某物 e.g.Go over

7、 your work before you hand it in.(2)反复研究，仔细琢磨 e.g.He went over the events of the day in his mind.goExploring the rulesgo through sth (1)仔细检查某物 (2)经历，遭受 e.g.Shes been going through a bad patch recently.go up（价格，温度等）上涨，上升 e.g.The price of vegetables is going up.go away 消失 e.g.The smell hasnt gone away

8、.goExploring the rulesget at sb 一再批评某人 e.g.She feels shes being got at.get at sth 获悉，了解，查明，发现 e.g.The truth is sometimes difficult to get at.get into sth 费力穿上 e.g.I cant get into these shoes theyre too small.get over sth 解决，克服，控制 e.g.She cant get over her shyness.getExploring the rulesget through st

9、h 耗尽 e.g.We got through a fortune while we were in New York.get up 起床 e.g.John always gets up early.get away 度假，休假 e.g.Were hoping to get away for a few days at Easter.getExploring the rulescome at sb 扑向（某人）e.g.She came at me with a e at sth（用某方法）考虑，思考 e.g.Were getting nowhere lets come at it from a

10、nother e into sth 继承，得到（遗产）e.g.She came into a fortune when her uncle e over sb 影响某人 e.g.A fit of dizziness came over eExploring the rulescome up with 想出；提出；拿出（一笔钱等）e.g.She came up with a new idea for increasing e under sth 归入，归类 e.g.What heading does this come under?come up（太阳）升起 e.g.We watched the

11、 sun to come e away 脱落，分离 e.g.The plaster had started to come away from the ePractice1.The medical expert asked a few questions to try to _ the truth.2.Books on epidemics _ the medicine section of the store.3.During this course,well _ the main causes of bird flu.4.It took him a week to _ the flu.5.H

12、as your headache _ yet?6.The price of this drug has _ twenty cents since August.7.Are you willing to stand by him and help him _ this difficult time.8.Jordan has _ some creative ideas for helping the sick.Use the phrasal verbs to complete the following e atgo undergo overget overget overgone upgo th

13、roughcome up withget atgo intoget overgo awayget throughcome undergo upcome up withPractice1.Articles on brain _ biology.2.The company will _ a new technique for detecting doping.3.As a Medicine major,he always _ the reasons for diseases.4.Diseases come on horseback,but _ on foot.5.Sometimes,it is n

14、ot easy to _ the doctors meaning.6.It took me a long time to _ my cold.7.Numbers of patients _ because of the poor air condition.8.I cannot imagine how people in the north will _ such a long and cold winter.Choose the correct phrasal verbs to complete the e under come up with goes intogoes awayget a

15、tget overgo upgo throughlungvirusposeraretrialinfectiousnationfactorglobePracticeTuberculosis(TB)is a serious(1)_ disease that can easily spread from one person to another.It affects the(2)_ and is passed on through tiny drops of saliva released when someone coughs or sneezes.Due to better understan

16、ding of the disease and how to treat it,it is now quite(3)_ in the developed world.Parts of the(4)_,such as some parts of Africa,Asia and Latin America experience higher rates of TB.In(5)_ with high rates of human immunodeficiency(6)_(HIV),however,the incidence of TB is also quite high,as TB spreads

17、 quickly among people with weak immune systems.Other risk(7)_ for catching the disease include age(being very young or old),hunger and malnutrition and having serious illness such as cancer or diabetes.Living in poor or unhealthy conditions or working in hospitals and other health facilities also(8)

18、_ a risk to people.There are some vaccines that can be used in young children to prevent TB but they are not effective for adults.(9)_ and testing of other vaccines are ongoing.Complete the text using the correct form of the words below.infectiouslungrareglobenationsvirusfactorsposesTrialsPracticeAn

19、 epidemic is an(1)_ disease that spreads rapidly to a large number of people within a short period of time.Epidemics have been occurring as long as humans have been on Earth.Some epidemics are(2)_ of previous viruses.A disease reaches epidemic levels when a certain number of deaths occur as a result

20、 of it and this number will be different for each disease.One disease might result in just a few deaths but be classified as an epidemic,as(3)_ others such as the flue,which is(4)_ but has much higher baselines.variationlungwidespreadtrial oppose toglobeposeestimateinfectiousComplete the speech usin

21、g the correct form of the words and phrase below.infectiousvariationsopposed towidespreadPracticeIn human history,there have been some deadly epidemics.In the early 20th century,the Spanish Flu of 1918 was a massive epidemic that killed an(5)_ of 50 million people,more than the number of people who

22、died in World War I.Initially,it was believed that epidemics(6)_ littler threat to the modern world,until SARS outbreak in 2002.The SARS epidemic started as a(7)_ disease in China but eventually spread across the(8)_ to countries such as Canada and Vietnam.It resulted in the infection of about 8,000

23、 people and since then,scientists have undertaken(9)_ on treatments to prevent future deaths.estimateposedlungglobetrialsvariationlungwidespreadtrial oppose toglobeposeestimateinfectiousPracticeChen Xi:Isnt it really bad if you get Ebola?Jonathan:Yes,Ebola(1)_(be)a serious life-threatening disease.I

24、(2)_(find)out that the first person to die in this outbreak was a 2-year-old child who(3)_(live)in a rural village in Guinea,Africa.Chen Xi:How terrible!Jonathan:Yes,but by November 2014 there(4)_(have)almost 5,000 deaths.Some experts believe that figure(5)_(be)higher because some people(6)_(do not)

25、seek medical help.Chen Xi:I(7)_(discover)that the virus(8)_(spread)from one person to another.In this outbreak,symptoms(9)_(appear)between eight to ten days after direct contact with an infected person.Jonathan:How can they stop another large outbreak?Chen Xi:They(10)_(not develop)a vaccine yet,but they have learnt to isolate patients when they have symptoms.Jonathan:I hope scientists can develop a vaccine soon.Complete the dialogue with the correct form of the verbs in brackets.isfoundlivedhad beenisdid notdiscoveredspreadappearedhavent developedAssignmentGoodbye!