北师大版 (2019)选择性必修 第三册Lesson 3 Epidemics Explained课文ppt课件

这是一份北师大版 (2019)选择性必修 第三册Lesson 3 Epidemics Explained课文ppt课件，共23页。PPT课件主要包含了outline，since 1997，–550 CE，Rome，–2003，–2016，Epidemics，what，definition，Homework等内容，欢迎下载使用。

Pre-reading
Pst-reading
Fast Reading
Language and Grammar
Intensive Reading
What epidemics d yu knw abut?
What d yu knw abut epidemics? Tick () the statements that yu think are crrect.
An epidemic is the rapid spread f an infectius disease.An epidemic can affect a large number f peple in a given ppulatin.An epidemic can ccur within a shrt perid f time, usually tw weeks r less.
An epidemic may spread t several cuntries r cntinents.Sme cmmn viruses, such as the cmmn cld, are nt epidemics.A new epidemic can be a different variatin f a virus that peple caught in the past.
Fast Reading
Fast-reading
Read the passage and answer the fllwing questins…
1. What is an epidemic?2. Hw can a disease be classified as an epidemic?
An epidemic is the name given t an infectius disease that rapidly spreads t a large number f peple within a shrt perid f time—usually tw weeks r less.
Each disease can nly fficially be classified as an epidemic nce a certain number f deaths have ccurred frm the disease.
Bird Flu1918 Spanish FluBlack DeathSARSEbla Virus Disease
Read and circle all the epidemics mentined in the passage.
Intensive Reading
Intensive reading
Cmplete the table abut the epidemics mentined.
Asia and Eurpe
mre than a hundred lives
half the ppulatin
1918–the end f Wrld War Ⅰ
China, Canada, Vietnam and Singapre
50 millin peple
West Africa
mre than 11,310 death
when epidemic startedexamples f epidemicstreatmentsbaseline number f deaths f epidemics
Tick the aspects that mentined in the passage. Use a diagram t demnstrate in a lgical way hw they are rganised.
definitinwhen it endedpssible causes f epidemics pssible slutins
when it ended
when epidemic started
examples f epidemics
Hw t classify
baseline number f deaths f epidemics
1. What are the main features f an epidemic? Give at least tw examples t illustrate yur pints.2. What shuld different cuntries d t prevent utbreaks f epidemics in the future? Why?3. What des the title mean t yu? What des the writer want t cnvey in the passage?4. What d yu think the passage is written fr?
Discuss the questins.
1. What are the main features f an epidemic? Give at least tw examples t illustrate yur pints.
The main features f an epidemic: (1) it is an infectius disease (2) it spreads rapidly t a large number f peple within a shrt perid f time (3) a certain number f deaths have ccurred frm the disease. The cmmn cld is nt an epidemic because while it affects many peple, it des nt cause deaths. SARS affected many peple and caused many deaths, s it is cnsidered an epidemic.
2. What shuld different cuntries d t prevent utbreaks f epidemics in the future? Why?
Cuntries will need t wrk tgether t d this because teamwrk amng natins acrss the glbe can save lives. This is a gd example f building a cmmunity with shared future fr mankind.
3. What des the title mean t yu? What des the writer want t cnvey in the passage?
The title means that the passage will explain questins abut epidemics. The authr wants t cnvey the infrmatin that we are always n ur way t find an explanatin t epidemics s as t find cure. It als implies that epidemics ccurred naturally and inevitably. We can nly explain it, and cannt prevent it r stp it cmpletely nw.
4. What d yu think the passage is written fr?
This is a ppular science article. It is mre likely t be written fr peple wh are interested in this tpic r wh have a lt f questins r misunderstanding f epidemics.