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(共22张PPT)
Unit 9 Human Biology
Lesson 3
Epidemics Explained
Pre-reading
I
Post-reading
IV
Fast Reading
II
Language and Grammar
V
III
Intensive Reading
Ⅵ
Homework
outline
Pre-reading
What epidemics do you know about
What do you know about epidemics Tick ( ) the statements that you think are correct.
An epidemic is the rapid spread of an infectious disease.
An epidemic can affect a large number of people in a given population.
An epidemic can occur within a short period of time, usually two weeks or less.
Pre-reading
What do you know about epidemics Tick ( ) the statements that you think are correct.
An epidemic may spread to several countries or continents.
Some common viruses, such as the common cold, are not epidemics.
A new epidemic can be a different variation of a virus that people caught in the past.
Pre-reading
While
Reading
Read and finish the tasks
as quickly as possible.
Readthe text quickly and match main idea with each partPart 1(Para. 1) A.Examples of epidemics in history.Part 2(Para. 2) B.The definition of an epidemic.Part 3(Para.3-8) C.Ways to deal with epidemic.Part 4(Para.9) D.The criteria(标准) of identifyinganepidemic.Activity1 To learnRead the first passage and answer the questions.
Activity 2
What is an epidemic
P58 2
Read the second passage and answer the questions.
How can a disease be classified as an epidemic
Is common cold epidemic？
P58 2
Epidemicsinfectiousspread rapidlywithin a short period of timealarge number of people are infectedcause a certain number of deathsWhat are the features of an epidemic To analyseRead from paragraph 4 to 8
Activity 3
Circle all the epidemics and time mentioned in the passage.
P58 2
Intensive reading
Name Period Places Death toll
Bird Flu ×
Epidemics in the Roman Empire
The Black Death ×
Complete the table about the epidemics mentioned.
since 1997
500–550 CE
1330s
Rome
Asia and Europe
more than a hundred lives
half the population
Intensive reading
Name Period Areas Death toll
The Spanish Flu ×
SARS ×
Complete the table about the epidemics mentioned.
1918–the end of World War Ⅰ
2002–2003
China, Canada, Vietnam and Singapore
50 million people
Intensive reading
Name Period Areas Death toll
EVD
Complete the table about the epidemics mentioned.
2013–2016
West Africa
more than 11,310 death
Intensive reading
when epidemic started
examples of epidemics
treatments
baseline number of deaths of epidemics
Tick the aspects that mentioned in the passage. Use a diagram to demonstrate in a logical way how they are organised.
definition
when it ended
possible causes of epidemics
possible solutions
Intensive reading
when it ended
Epidemics
when epidemic started
examples of epidemics
what
definition
How to classify
baseline number of deaths of epidemics
After
Reading
analysing, mindmap, retelling
How to describe an epidemic
Activity 4
P58 2
when it started
death toll
People’ feelings
scientist’s finding
bird flu
People’ feeling
Many people feel it
could be the next
global epidemic
scientist’s finding：a modern adaptation of Spanish flu
death toll：
It took a hundred lives
when it started
It first appeared in 1997
P60 4
How to describe an epidemic（an example）
Use the underlined words or phrases to introduce Covid-19
P58 2
covid-19
过去三年多，全球经历由阿尔法、德尔塔、奥密克戎等变异毒株（strain）引发的多轮疫情高峰。世卫组织数据显示，全球累计报告确诊病例逾7.6亿，死亡病例超过690万。
Discussion
Activity5
Discuss the questions.
1.What does the title mean to you
What does the writer want to convey in the passage
2. Could epidemics completely stopped
P60 5

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