资源简介

(共34张PPT)
主讲人：XXX
课型：单元导入课
Welcome to the unit
Unit 7
The natural world
借助图文识别自然界不同类型的生态系统，初步了解其环境特征和特有生物等基本信息;（学习理解）
01
获取并梳理Kitty和 David 对话中关于草原和沙漠生态系统的信息，提取并归纳描述各自环境特征及特有生物的词汇和语言表达;（应用实践）
02
运用所学词汇和语言表达开展同伴问答活动，交流自己了解的生态系统趣味知识。（迁移创新）
03
Lead in
01
Unit overview
02
Presentation
03
Practice
04
Summary
05
Language points
06
Exercises
07
Homework
08
Lead in
01
Lead in
What can you see in the picture
Egret白鹭
Where does this kind of bird like to live
Wetland
湿地
What different types of ecosystems do you know
Unit overview
02
Unit overview
What will we learn in this unit
Unit overview
v
v
Presentation
03
Presentation
Look and say
over half of all the types of animals and plants
Rainforest ecosystem
be home to
green plants
Presentation
Ocean ecosystem
fish
coral reefs look like rocks
they support a lot of life
Presentation
Grassland ecosystem
wide open areas with green grass and a few trees
lie between deserts and forests
Presentation
Polar ecosystem
penguins stand on the ice
polar bears
Presentation
What other ecosystems do you know
Presentation
desert ecosystem
wetland ecosystem
Presentation
Fun facts about deserts
Presentation
Climate: hot, little rain
Life: plants (cacti), animals (camels)
How to survive: store water/fat
Importance: be home to…
Presentation
Fun facts about wetlands
Presentation
Climate: hot, little rain
Life: plants (cacti), animals (camels)
How to survive: store water/fat
Importance: be home to…
Kidneys
Keep water clean
Prevent floods
Biodiversity生物多样性
Presentation
Kitty and David are talking about ecosystems.
Listen and fill
Grasslands Deserts
Climate It’s very dry with little 3.______________. There’s huge difference in 4._______________between day and night.
Animals & plants Grasslands in different places are home to different animals, like 1.____________ in Inner Mongolia, and 2.________________ in Africa. 5._______________ animals and plants can live there. The desert plants keep water in their 6.______________, and many animals can get water from these plants.
horses and cows
lions and giraffes
rain
temperature
Only a few
leaves
Presentation
Listen and read
Practice
04
Practice
Work in pairs and discuss the topic. Use the conversation below as a model.
A: Do you know anything about ...
B: l know that ... in different places are home to ... In …, there are ..., but in …, there are …
A: Oh, really Do you know anything about ...
B: Well, it's ... And …
A: Yes, the climate in ... is ...
B: it's true. They help … and give food to …
Pair work
Practice
Oceans cover about 71% of the earth's surface, making them the largest ecosystem on earth.
Grasslands have very few trees but lots of tall grasses and wildflowers.
In deserts, some plants can live without rain for years.
Polar bears live in the North Pole, and penguins live in the South Pole.
…
What other fun facts about ecosystems do you know
Group work
Summary
05
Summary
What do we learn today
借助图文识别自然界不同类型的生态系统，初步了解其环境特征和特有生物等基本信息;（学习理解）
01
获取并梳理Kitty和 David 对话中关于草原和沙漠生态系统的信息，提取并归纳描述各自环境特征及特有生物的词汇和语言表达;（应用实践）
02
运用所学词汇和语言表达开展同伴问答活动，交流自己了解的生态系统趣味知识。（迁移创新）
03
Language points
06
Language points
And the difference in temperature between day and night is huge.
昼夜温差非常大。
difference (n.) different (adj.) make a difference
between…and…
每天锻炼一小时，能给你的健康带来改变。
Taking an hour of exercise every day can make a difference to your health.
Language points
2. Yes, the climate in deserts is so awful that only a few animals and plants can live there.是的，沙漠的气候非常恶劣，只有少数动植物能够在那里存活。
so ... that ...意思是“如此……以至于……”，引出结果状语从句。其中 so 是副词，修饰形容词或副词。
这个袋子太重了，我提不动。
The bag is so heavy that I cannot carry it.
Exercises
07
Exercises
1.We watched a __________________ show at the zoo yesterday.
2. __________________ are home to many fish and other sea animals.
3.Plants, fishes and the sun are part of the __________________ of this lake.
4.The heavy __________________ could help the plants grow.
5.This area is famous for its extremely (极端地) dry __________________.
penguin
Coral reefs
ecosystem
rainfall
climate, penguin, rainfall, ecosystem, coral reefs
climate
Homework
08
Homework
Have to do
1. Finish the exercises.
2. Preview Reading.
Choose to do
Search on the internet to find more fun facts about ecosystems.

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