Unit 4: Astronomy Reading : How Life Began On the Earth.
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Transcript of Unit 4: Astronomy Reading : How Life Began On the Earth.
What have you seen in the video?
amphibian(s)
reptile (s) mammal (s) human (s)
simple cells shellfish
Ideas about how life began on the earth
Idea 3: God created the world.
Idea 1: Pangu created the world.
Idea 2: Nuwa made human beings.
What’s the writing style of the passage?
A.narrative writing ( 记叙文) B.expository writing ( 说明文) C.argumentative writing (议论文)D.news report
Skimming:
the formation of the universe
the development of life(Para 2,3,4)(Para 5)
part 1
part 2
main idea?
(Para 1)
part 3 the impact of human beings on the earth
Scanning:
The universe began with__________.The earth began with__________.
A. a cloud of dust B. small plants C. a Big Bang D. dinosaurs
C
A
Read from the illustration( 插图)
Did life appear on land or in the water first? Why?line19: It was not immediately obvious that waterwas to be fundamental to the development of life.
small plants in watershellfish and all sorts of fish
insects
reptiles
amphibians
mammalsdinosaurs
humans
plants animals
green plants on land
forests
first next
later
after that
finally
How did plants and animals develop?para4, 5
Reading for speaking:
M: Hi,Tom. I’m really confused about the development of life. What appeared first?T:Well. It’s small plants that appeared first .M:Why was that?T:They can produce oxygen, which…M:Next, what plants began to grow?T: …M:Later, when…T:…M:After that,…T:…M: Finally…T:…
Discussion:The impact of human beings on the earth:
Positive Negative
nuclear pollution global w
arming
report
• According to the following linking words to give a report and the impact of human being on the earth.
• first, next, later, after that, before long,
• finally, in a word.