Unit 5 Revealing nature Using language 课件-外研版高中英语(2019)选择性必修一

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名称 Unit 5 Revealing nature Using language 课件-外研版高中英语(2019)选择性必修一
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版本资源 外研版(2019)
科目 英语
更新时间 2025-04-22 09:40:28

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(共17张PPT)
(外研版高中英语)选择性必修一
Using language
Revealing nature
Unit 5
Revealing nature
Learning objectives
At the end of the class, students will be able to:
Sort out words and expressions related to Biodiversity by reading;
Describe the species using the related words and expressions;;
3. Improve the abilities to get and summarize the key information by listening;
4. Strengthen the awareness of protecting Biodiversity and develop the interest in exploring nature.
.
Using language
What can you see from the video
Every species is lovely and special!
What species are mentioned and what is special about them
Activity 1
Complete the passage with the correct form and answer the questions.
is home to /so...that/length/weight
survive/feed on /serve as /is native to
The toughest species can survive temperatures from 150℃ to a below freezing
-272 ℃.
The largest animal species can grow up to 30 meters in length
130,000 kilos in weight
viruses
Bacteria
[b k t ri ]
So small that cannot see them with only eyes
Special
appearance
habit
function
Mangroves
Giant Tortoise
Iguana
They have a very special appearance, with comb-like spines on their back.
They feed on leaves and grasses.
They serve as the habitats for various birds and fish, and are very important to the ecosystem.
bacteria
benefits harms
2. Bacteria can help with digestion(消化).
1. Bacteria can be used to make cheese, yoghurt, vinegar(醋)..
3. Bacteria break down the dead, organic matter into nutrients.
Bacteria can cause diseases or infection(传染病).
Bacteria is used in food production.
Discussion
Activity 2 Listen to the podcast (播客)to complete the sheet and answer the questions.
Jenny: This week, as part of our series on biodiversity, we are discussing___________. They are the __________ of life on Earth. Scientists believe they first emerged around_____________________!
Josh: That's incredible!
Jenny: But you can only see them with a microscope, as these living things are___________. We're talking about life at the level of the______.
1. What’s the relationship between two people
A. husband and wife B. partners C. classmates
Where does this conversation probably take place
in a online programme B. at home C. in a classroom
What’s the main topic of the podcast
microorganisms
oldest form
three and a half billion years ago
very very small
cell
Tip2: ln a podcast, first listen out for the main topic. This is usually a statement or question at the very start of the podcast.
We are discussing microorganisms
Tip1:If you can’t recognize the word , try to note down how it sounds and try to work out the meaning from the context of the word.
Listen to the introduction of cell and complete the sheet .
Cells
Every living thing is _____________. They are like ____________________.
In the human body there are about _____________human cells and around __________________bacteria cells.
made up of cells
thirty-nine trillion
thirty trillion
Tip 3: Pay attention to the strong pronunciation which is used to emphasize the most important words in a sentence.
bricks that are used to build houses
Special
appearance
amount
Bacteria are always harmful to humans.
Some species of bacteria are used in food production.
Most bacteria in human body can help with digestion.
Many species of bacteria recycle dead organic matter.
Our immune systems are able to fight off(击败) all germs.
Bacteria:
Bacteria can _____________dead organic matter into nutrients, which _____________the soil where they can ______by plants.
Although some of bacteria may _________in human, they aren’t all bad.
Listen to the podcast and choose the statements of Bacteria
recycle
break down
go back into
be used
Tip 4: Pay attention to the verbs.
cause diseases
Special
function
Checking background knowledge
Adding information
Do you know about...
Have you heard of...
By the way, ...
Actually, ...
In fact, ...
Speaking of which, ...
In addition,
What’s more,
Besides,
Activity 3
Work in pairs and make a podcast
Dawn redwood
Panda
Siberian tiger
White-flag dolphin
1. Who is to blame for Gorge’s extinction
2. What did humans do to him
humans
Pinta Island tortoise population declined after humans introduced new species, goats that competed for the food the tortoise eat.
Read the passage and answer the questions
Activity 4