文档介绍：Unit 4 M3
Language points
1
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Further questions:
is fundamental to the development of life? What chain reaction does it produce?
used to be nine planets in the solar system. Recently scientist have decided that one of them can no longer be considered a planet. Do you know the name of it? Why did they remove it?
2
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Fill in the diagram:
Water
life
(plants)
oxygen
shellfish / fish
amphibians
reptiles --Huge animals
(dinosaurs)
mammals
humans
in water
on land
3
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2. There used to be nine planets in the solar system. Recently scientists have decided that one of them can no longer be considered a planet. Do you know the name of that planet? Do you know why they removed it?
Pluto.
Scientists now think it is too small to be called a planet.
4
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, according to a widely accepted theory, the universe began with a “Big Bang” that threw matter in all directions.
adv. +done adj.
一对新婚夫妇
一个高度发达的国家
a newly married couple
a highly developed
country
5
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2)他以一首歌开始/结束他的演讲。
He began / ended his speech with a song
首先，请大家拿出纸和笔。
To begin with, please take out paper and pen.
3)他们朝学校的方向走去。
They walked in the direction of our school.
4) matter n. 物质（总称) 不可数
the amount of matter in the universe
important matters 重要的事情
6
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it was to become was uncertain until and billion years ago when the dust settled into a solid globe.
was to = would
settle: 降落；停留在
Dust settled on the tables and chairs.
settle the problem 解决问题
settle in London 定居
settle down