1、2014-2015学年高中英语【精品】同步教案（1）：Unit4（人教新课标必修3）Unit 4Astronomy：the science of the stars【美文阅读】关于大地起源的神话有许多许多，你了解多少呢？The sky and the earth were at first one blurred entity(混沌整体) like an egg. Then Pangu was born into it. The separation of the sky and the earth took eighteen thousand years. The yang which wa
2、s light and pure rose to become the sky，and the yin which was heavy and murky(黑暗的)sank to form the earth. Between them was Pangu, who went through nine changes every day, his wisdom greater than that of the sky and his ability greater than that of the earth. Every day the sky rose ten feet higher, t
3、he earth became ten feet thicker, and Pangu grew ten feet taller. Another eighteen thousand years passed, and there was an extremely high sky, an extremely thick earth, and an extremelytall Pangu. After Pangu died, his head turned into the Five Sacred Mountains(Mount Tai, Mount Heng, Mount Hua, Moun
4、t Heng, Mount Song), his eyes turned into the moon and the sun, his blood changed into water in river and sea, his hair into grass. In all, the universe and Pangu combine in one.【诱思导学】1Do you agree on the forming of the universe？Give your reasons._2What kind of people is Pangu in your eyes?_【答案】1.No
5、，I dont agree.Because the scientists have already found out how the universe formed.2I think Pangu is very great and determined.He is a hero.Period Previewing(教师用书独具)教学目标本课时主要是通过学生对学案所给出的内容的学习，了解本课文中所出现的词汇，初步了解课文以及相关的背景知识，就下一堂课对课文的全面理解起到一个铺垫作用。教学地位本单元的中心话题是“天文学”。这篇文章采用了叙述性文体。按照时间顺序主要叙述了太阳系、地球上生命的起源和
6、发展过程、宇宙大爆炸。可以说单元科学知识含量较高，更能激发学生的学习兴趣和好奇心。(教师用书独具)新课导入建议第一步：教师：Imagine you are a scientist on Astronomy，which star do you want to study most？教师展示太阳系的图片，让同学们识别不同的行星。地球Earth；水星Mercury；金星Venus；火星Mars；木星Jupiter；土星Saturn；天王星Uranus；海王星Neptune。第二步：教师提问：Among these planets，the earth is really special for its
7、 living life.And do you know how the life began on the earth? 在同学们自由回答后，教师应指明的是：关于生命的起源，主要有宗教和科学两类不同的解释。教师可通过图片、文字等方式向学生介绍以下三方面的说法：1中国古代关于人类起源的传说(Chinese legends)：如“盘古开天”和“女娲造人”等；2西方圣经(biblical story)的“上帝造人说”；3较为公认的科学解释(scientific ideas)：“宇宙大爆炸”说。教学流程设计导入新课。学生阅读“美文阅读”与“诱思导学”。(见学案第48页)学生就“美文阅读”进行讨论，统
8、一答案。学生再次阅读课文(课本第2526页)并完成“语篇理解”。(见学案第4849页)师生共同讨论并统一答案。让学生快速阅读课文，(见课本第2526页)并完成“篇章结构”。(见学案第48页)学生共同讨论，并让学生发表各自见解，最后统一答案。学生再次仔细阅读课文，(课本第2526页)进行深度理解，并完成“课文缩写”。(见学案第49页)老师指导学生讨论，共同找出答案。让学生根据所给出的表格进行自我评估。(见学案第49页)学生讨论，并让学生代表发表他们讨论得出的答案。老师予以更正。让学生完成“知识初探”部分。(见学案第49页)老师布置作业，让学生看课本第2526页并完成课本第27页1、2、3题，预习
9、学案Period 。(见学案第5053页).篇章结构阅读P2526的Reading部分，完成下列表格How Life Began on the EarthBig BangEarth：a cloud of1_a solid 2._small 5._on the surface ofthe waterWater：4._to the developmentof lifethe earths3_early 6._and all sorts of fishgreen7_on landland8_reptileshuman 10._the rise of mammalshuge 9._(dinosaurs
10、)【答案】1.dust2.globe3.atmosphere4.fundamental5.plants6.shellfish7.plants8.animals9.animals10.beings.语篇理解阅读P2526的Reading部分，从每题所给的3个选项中选择最佳答案1What is the right order according to the text?Animals appeared and spread.The forming of the earth.Plants appeared.Difference between the earth and other planets.
11、A B C2What is the main cause that life was able to develop on the earth but not on other planets?AThe earth had a solid shape.BWater stayed on the earth but not on other planets.CThe earth was not too hot or too cold.3From the last paragraph we can infer that the author is_.Aconfident Bsad Cconcerne
12、d4What does the word “they” refer to in the sentences “It exploded loudly with fire and rock. They were in time to produce carbon, nitrogen, water vapour and.”？APlanets. BGases. CFire and rock.5It can be inferred from the text that_.Aafter the “Big Bang”， what the dust was to become remained a myste
13、ryBthe plants multiplied and filled the oceans with oxygenCplants played an important part in the appearance of the animals【答案】1.B2.B3.C4.C5.C.课文缩写The earth was just a cloud of 1._after the “Big Bang”. The earth 2._loudly with fire and rock. They were in 3._to produce many things, which were to make
14、 the earths atmosphere. As the earth cooled down, water began to appear on its surface. It allowed the earth to dissolve 4._gases. Then life began to develop.The first small plants 5._and filled the oceans and seas with oxygen. This encouraged the 6._of early shellfish and fish. Land animals such as
15、 insects, reptiles and dinosaurs and so on appeared after green plants appeared. Small clever animals 7._all over the earth. They are putting too 8._carbon dioxide into the atmosphere, which 9._heat from the earth into space. Whether life will continue on the earth for millions of years to come will
16、 10._on whether this problem can be solved.【答案】1.dust2.exploded3.time4.harmful5multiplied6.development7.spread8.much9prevents10.depend.词义搭配1. atmosphere Adifferent from，not similar to2unlike Bthe mixed gases that surrounds theearth3. fundamental Cfor that reason; for this reason4. theory Dincrease,
17、add to the number of5. thus Every important or necessary6. multiply Fidea that tries to explain something7. exist Gcausing harm8. harmful Hto be present or happen【答案】1.B2.A3.E4.F5.C6.D7.H8.G.短语填空用方框内所给短语的适当形式填空in time；lay eggs；give birth to；in ones turn；prevent.from；be harmful to1A bird_in the nest
18、it has built.2Do you think well be_to catch the train to go to Paris?3No matter what will happen，nothing and nobody can_the plan_being carried out.4Reading in dim light_your eyes.5After the second competitor went off the stage，my son went onto the stage to perform_.6He told us happily that his wife
19、would_a baby the next week and that he would be a father.【答案】1.lays eggs2.in time3.prevent；from4.is harmful to5.in his turn6.give birth to.句型背诵1The earth became so violent that it was not clear whether the shape would last or not.地球(开始)变得激烈动荡，不知道这个固体形状是否会继续存在下去。2What is even more important is that_a
20、s_the_earth_cooled_down，water_began_to_appear_on_its_surface.更为重要的是当地球平静下来时，水开始在地球表面出现了。3This produced a chain reaction，which made_it_possible for life to_develop.这就产生了一个连锁反应，使生命的发展成为可能。4So whether life will continue on the earth for millions of years to come will depend on whether_this_problem_can_be_solved.所以，在未来的数百万年中，生命能否在地球上延续取决于这个问题能否得到解决。