人教版高中英语必修3Unit 4　Astronomy: the science of the stars Warming up and reading 课件 共19张PPT

课件19张PPT。Enjoy a songUnit 4Warming up and readingAstronomy:
the science of the starsEach religion or culture has its own ideas about how life began on earth. Warming up In Chinese culturePangu separates the sky from the earth.Nuwa mended the heaven and created
human beings from the clay. In Chinese cultureIn Western countries: God created the world and all living things. How life began on the earth?Read the passage quickly and match the main idea with each paragraph. Para. 1
Para. 2
Para. 3
Para. 4
Para. 5 The importance of water
The formation of the universe
The arrival of human beings
The formation of the earth
The development of plants and animals Fast readingRead the passage quickly and summarize the main idea.A brief introduction on how the universe__________and how life __________ on the earth.Fast readingdevelopedbeganWhat’s the writing style of this passage?
A. A story.
B. An exposition.
C. An argumentation.To explain some idea or theory to people.Fast readingRead Para. 1-2 and fill in the blanks. Careful readingAccording to a widely accepted theory, the universe began with_____________.
For several billion years after the “Big Bang”, the earth was still just ______________.
Between 4.5 and 3.8 years ago, the dust settled into____________.
As the earth cooled down, ____ began to appear on its surface.
a “Big Bang”a cloud of dusta solid globewater Careful readingRead Para. 3 to decide whether the following sentences are true or false. ( ) 1. Water on the earth disappeared later.
( ) 2. Water was necessary and important to the development of life.
( ) 3. Water was helpful in dissolving the harmful gases and acids into the oceans and seas. F TTsmall plants in the watergreen plants on land insects on landmammals on land12123lifeplants animalsRead Para. 4-5 to find the development
of life.4small plants in the watergreen plants on land insects on landmammals on land12123shellfish and all sorts of fishamphibian on land and in waterforestsreptiles on landdinosaurs on landlifeplants animals4human beingsAre human beings looking after the earth well?No, they are putting too much carbon dioxide into the atmosphere Careful reading solar energy plant trees recycle rubbish purify airWhat can we do to reduce putting too much carbon dioxide?Brainstorming save energy recycle shopping bags disposable goodsOnly if we care
will we help;
Only if we help
shall all be saved!Post reading
Make a poster about the development of life with your group members.
2. Lead a low-carbon life from today on.Homework