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人教2003课标版《Using LanguageⅡ》集体备课PPT课件优质课下载
2. when we talk about astronomy,
everyone is curious about our solar system: How did our solar system
come into existence?
Step 1 warming up:
宇宙大爆炸到太阳系.flv
In our solar system eight planets
circle around the sun.
1111
our solar system:
水星
金星
火星
木星
土星
天王星
海王星
Scientists now think Pluto is
too small to be called a planet.
Step 2 detailed reading:
1. Besides our solar system,everybody has these puzzles:
1.How did the earth come into being?
2.
Step 3：Read para2 and answer the questions:
(1) After the Big Bang, what was the earth like?
(2) What happened next?