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(共20张PPT)
人教版（2019）选择性必修四
Unit 3 Sea Exploration
Using Language Reading for Writing)
Express your opinions on sea exploration
Check the homework
1. Retell China’s sea exploration according to the table.
2. Think about the advantages and disadvantages of sea exploration.
purposes
/benefits
region
Time
order
in ancient times
in Ming Dynasty
today
in recent years
in the future
Para.2
Para.3
Para.4
Para.5
Para.6
1. Retell China’s sea exploration according to the table.
What are the advantages and disadvantages of sea exploration
2. Think about the advantages and disadvantages of sea exploration.
Opinions on sea exploration
Topic sentence, key words
What are the two authors’
opinions about
the sea exploration
opposed
supportive
What is the main idea of the two texts
A. Narration (记叙文).
B. Exposition (说明文).
C. Practical writing (应用文).
D. Argumentative essay (议论文).
Argumentative essay
What is the type of the two texts
How many parts can text 1 be divided into and what are they
Part 1(Para. 1): Argument 论点
Part 2(Para. 2-4): Evidence 论据
Part 3 (Para. 5) Summary -A call to action
Part 1: Argument
Part 2: Evidence
Part 3: Summary - Restatement
argument
evidence 1
facts
evidence 2
cause and effect
evidence 3
examples
restatement
Style: argumentative essay
argument
evidence 1
example
evidence 2
examples
evidence 3
explanation
restatement
Exploration and mapping绘制地图 of the deep sea would be for the benefit of all citizens —not just in economic terms 角度but in opportunities for unexpected discoveries. But what we should take into account is how to strike a balance between the protection and exploitation of it.
Should oceans be explored
Dicussion
the advantages and disadvantages of sea exploration
1. offer us food
2. discover new sources
of food and energy
3. discover new medicines
4. ...
1. cause ocean pollution
2. the ocean creatures die
3. do harm to ecosystem
4. ...
advantageggaa
advantages
disadvantages
Writing
假定你是李华，最近你班就人类是否应该进行海洋探索进行了讨论，请根据讨论结果，写一篇报道。
注意:1.词数100左右; 2.可适当增加细节，以使文章连贯。
赞成的理由 反对的理由 你的看法
1.获取更多的海底资源； 2.更好地了解我们的星球。 …… 1.造成海洋污染，导致海洋生命死亡； 2.破坏生态系统。 …… ……
审题
1.确定体裁:本次写作是一篇议论文，内容涉及海洋探索。
2.确定人称:本文要用第三人称。
3.确定时态:时态以一般现在时为主。
谋篇：三段式
第一段：说明讨论的话题——人类是否应该进行海洋探索；
第二段：说明正方和反方的观点及理由；
第三段：表明自己的观点。
1.When it comes to..., opinions vary from person to person.
2.Recently our class has had a discussion about whether ...
Para.1 Introduce the topic
6.As far as I am concerned,...
7.From what has been discussed above, we can draw the conclusion that we should...
3. ... has many advantages. For example...
4. Some people think that..., others argue that...
5. However, every coin has two sides. ... has its disadvantages．
Para.2 Advantages and disadvantages
Para.3 Your opinion/conclusion
Linking words: first of all; in addition; last but not the least; however; most importantly; for example; instead;
Write your draft and exchange it with a partner.
Use the checklist to help each other revise the drafts.
Yes No
Is the point clear enough
Are there any examples or facts that support the argument strongly
Is there any explanation on how the evidence supports the opinion
Are there some connectives linking one point to another
Dear Editor，
When it comes to sea exploration, opinions vary from person to person. Recently our class has had a discussion about whether sea exploration should be carried out.
Some of the students are in favour of sea exploration.They say sea exploration has made it possible for people to discover new medicines as well as new sources of food and energy.Others are against it. Sea exploration might help improve our understanding of the life on the earth. However, it might bring about ocean pollution，which finally leads the ocean creatures to death. It also might do harm to the ecosystem.
　 As far as I am concerned，sea exploration should be balanced with economic needs. As technology improves，we may have more options for managing this balance.
Yours,
Li Hua
They (oceans) provide a breeding ground for life, connect the world and promote development.
海洋是生命的孕育之地，连接世界，促进发展。
---习近平致“2019年中国海洋经济博览会”开幕的贺信
Create a poster for World Oceans Day
Thank you!

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