Astronomy教案

2. reading and underlining
next you are to read and underline all the useful expressions or collocations in the passage. copy them into your notebook after class as homework.
collocations from how life began on the earth
a cloud of energetic dust具有能量的塵埃, combine into…合成……, move around the sun環繞太陽運轉, become violent變得激烈, the solid surface固體表面, explode loudly猛烈爆炸, in time及時，最終, produce the water vapor產生水蒸汽, make the earth’s atmosphere構成了地球的大氣層, cool down冷卻, on the surface在表面, be different from…與……不同, go round the sun環繞太陽運轉, disappear from…從……消失, stay on…存留在……, show one’s quality顯現某人的特性, dissolve harmful gases分解，溶解有害氣體, become part of…變成……的一部分, develop life發展生命, grow in the water在水里生長, fill… with…用……來填充……，充滿了……, encourage the development of…鼓勵……的發展, millions of years later幾萬年以后, live on land在陸地上生活, live in the sea在海里生存, grow into forests長成森林, produce young生出幼仔, lay eggs下蛋, animals with hands and feet長著手腳的動物, spread all over the earth遍布全世界, develop new methods發展了新的方法, grow food種植, move around遷徙, go by過去，推移, take care of…在意……，照看好……, put…into…把……帶入，放入……, prevent…from…防止……做……, escape from… into…從……逃離到……, become hot變熱, depend on….依靠，依賴，取決與……, solve a problem解決一個問題
3. reading and understanding difficult sentences
skim the text and identify the difficult sentences of each paragraph. you may put your hand up if you have any questions.
4. reading and transferring information
read the text again to complete the table below,
how life began on the earth
what was the earth like after the “big bang”? 
why was the earth different? 
how was life developed on earth? 
what did small clever animals do?  
5. reading and translating
as you have read the text times, you can surely put it into chinese. wang hongqin, will you be the first to have a try, of putting the first paragraph into chinese.
iv. closing down
closing down by doing exercises
to end the lesson you are to do the comprehending exercises 2 and 3 on pages 26 and 27.
closing down by having a discussion—how did the universe begin?
there are only three possible answers to this question.
1.it was created by something larger than itself since the first law of thermodynamics(熱力學) says that energy cannot be created, only changed.
the universe had to be created by something outside itself, because of the same law. we also know that man could not have created it.