1、NSEC Book3 Unit4NSEC Book3 Unit4Astronomy:the science of the stars Astronomy:the science of the stars Lesson 3Listening and Reading(One period)1.随着科技的发展，人们越来越多地依靠计算机处理各种各样的事情。（development,depend on,all sorts of）5.我们应该想办法阻止有害的气体蔓延。（preventfrom,harmful,spread）With the development of science and techno
2、logy,people have come to depend more and more on the computer to deal with all sorts of things.We should find some methods to prevent the harmful gas(from)spreading.Translation on Page64 in Workbook:2.既然存在着许多无法解决的问题，战争很可能会爆发。(now that;exist;break out)Now that many problems which cannot besolved exis
3、t,wars will probably break out.Do the following exercises to consolidate:1.Li and Wang did not like each other at first,but _(最终)they became friends.2.Villagers planted a large number of trees to _(防止土壤被冲走).3._,small plants multiplied and filled the first oceans and seas.4.Whether well go out for a
4、picnic _(视天气而定).in time/at last/finallyprevent soil from being washed/carried awaydepends on the weatherAs time went byIsaac Newton牛顿Albert Einstein爱因斯坦Stephen Hawking霍金They are outstanding physicists.They all have good knowledge of physics,mathematics,geophysics,astronomy,etc.What do they have in c
5、ommon?What do the 3 scientists study all concern?Gravity.As far as you know,is gravity the same at different places in space?No.Gravity is different in space.For example,the gravity of the moon is only 1/6 of that of the earth.the Milky Waythe Solar Systemthe Black Hole 1.I heard about how three men
6、 made mistakes when they tried to describe gravity.2.I heard about how three men wanted to find out about the beginning of the universe.3.I heard about how the idea of gravity had developed over a long period of time.4.I heard about three scientists and their work.Pre-listening:guess which of the fo
7、llowing will be the main idea of the passage.Now,listen to it to see if you are right.Listen to the part about Isaac Newton and fill in the following table.Dates IdeaOther informationIsaac NewtonEverything _ to the _ because of a pull called _.Newtons gravity was only about the _.1642-1727falls back
8、earthgravityearthListen to the part about Albert Einstein and fill in the following table.Dates IdeaOther informationAlbert Einstein1)Gravity is _ in space.2)When a rocket or spaceship is in space,there would be _ gravity.3)Time is _ _ everywhere.Einsteins gravity was about the _.1879-1955differentn
9、onot thesameuniverseListen to the part about Stephen Hawking and fill in the following table.Dates IdeaOther informationStephen Hawking“Black holes”not only _ stars or things into it,but also _ them out into space.Hawking _ Einsteins idea about gravity to make ideas about _.1942-nowpullpushuses“blac
10、k holes”Pre-reading:Lets read an example which will show us Einsteins idea about gravity.But before that,lets look at some photos.When will the astronauts feel they are pushed hard back into their seats?When will they float(漂浮)around in the spaceship?If you had a chance to walk on the noon,do you th
11、ink you would walk faster or more slowly?The way gravity changedLeft the earthIn spaceOn the moon 3.It became very light.1.The gravity became very strong.2.The gravity disappeared.Read the passage and finish the exercises after it.The weight changedLeft the earthIn spaceOn the moonHe became very hea
12、vy.He had no weight and could float around like a feather.He was about one-sixth of his weight on the earth.Key words and expressions in the passage:have a chance to do sth 有机会做某事force 力，力量，自然力，物理the force of gravity 重力Gradually the weight lessened.渐渐地重量减轻了。cheer up 欢呼，喝彩，感到高兴float weightlessly around in the spaceship cabin在太空舱失重地飘来飘去explore 探险mass 质量now that 既然get the hang of sth 掌握 break out 突发，爆发exhaust 使筋疲力尽 exhausting 令人筋疲力尽的exhausted筋疲力尽的exclaim 惊叫，大声叫Homework:1.读背阅读篇章中的新单词，准备小测。2.完成课本翻译P64-ex3-3)4)6).3.找出P25-26阅读篇章中所有的宾语从句和表语从句。
