人教版高中英语必修三Unit 4 Astronomy: the science of the stars reading课件(共25张PPT)

课件25张PPT。Unit4
the science of the starsI. Warming up
1. What words will you think of when we talk about this topic? star, planet, the sun / moon / earth, solar system 恒星 行星 太阳 月球 地球 太阳系 2. How many planets are in the solar
system?
Earth Jupiter Uranus Saturn NeptuneMy Very Excellent Mother Just Sent Us Nine Pizzars.Mercury Venus Mars PlutoScientists now think Pluto is
too small to be called a planet. In Chinese culture…____________ separates(分) the sky
　　　　　　　　　 from the earth.Pangu 盘古skyearthDo you know their origin?_____________ made human beings.Nuwa (女娲)In western countries:
　　　　　　　______________ created
the world and all living things.God (上帝)Day 1: God spoke and separated light from darkness creating Day and Night
Day 2: God spoke and separated the water creating sky and ocean
Day 3: God spoke and created dry land The Biblical AccountDay 4: God spoke and created the sun, moon and stars
Day 5: God spoke and created living creatures in the air and sea
Day 6: God spoke and created the land animals and man
Day 7: God rested and blessed this day calling it Holy How life began on the earthReading Para. 1 The formation (形成) of the
earth.
Para. 2 The importance of water for
life.
Para. 3 A widely accepted theory about
the formation of the universe.
Para. 4 The arrival of humans and their
effect on the earth.
Para. 5 The development of plants
and animals on the earth.Main idea(para 1—3)(para 4—5)Stage 1: The development of the earthFor several billion years after the “big bang”A cloud of dustBetween 4.5 and 3.8 yearA solid globeExplod with fire and rockProduce carbon, nitrogen and other vapourAs the eartht cooled downWater appeared(para 1—3)(1) After the Big Bang, what was the earth like? a cloud of dust a solid globe exploded with fire and rock produced water
vapour and gasesWhat appeared as the earth cooled down?Water is fundamental to the development of life. Water appeared Why is water so important for the beginning of life?
Because water allowed the earth to dissolve harmful gases and acids into oceans and seas.？Stage2 The development of life(para 4—5)1. Water appeared on the earth2._____________
grew on the water.3._________and other fish appearedShellfish4.____________began to grow on landGreen plants5_________and _______Insectsamphibians 6_________appeared after the forestReptiles7_________8_______9_______
with hands and feetDinosaurs Mammals Clever animalsSmall plants Small plants appeared in water What life developed after water appeared?Shellfish and all sorts of fishgreen plants began to grow on land insects appearedamphibians on land and in the waterforests reptiles appeared dinosaur developedmammals on land small clever animalsWhy did the plants grow before the animals came?Why is it wrong to show films with dinosaurs and people together?Why were mammals different from all life forms in the past? Conclude the main idea of each paragraph.
1) A widely ______ ________about the _____ of the universe.
2) The formation of the ______.
3) The __________ of water for life.
4) The development of ______ and _______ on the earth.
5) The arrival of _______ and their _____ on the earth.
The text mainly tells us the _________ of the
earth and the ___________ of life on it.
The main idea of Reading1.Accepted theoryoriginearthimportanceplantsanimalshumansinfluence
/ effectformationdevelopment