1、Humans and NatureUnit 5Viewing workshopPart 1Lead inLead inDo you know the word “universe”?Lead in“Universe”a world or an area of space that is different from the one we are inLead inLets imagine how big is the “universe”.Lead in.Lead inLets watch the video and find the right answer.Then complete th
2、e following quiz.A. 13.8 billion B. 27.5 billionC. 46 billionD. 93 billion1 The universe is about _ years old.2 The observable universe is about _ light years across in diameter.3 Today the distant objects like stars that we can observe are a bit more than _ light years away.Lead inHave a try!A. 13.
3、8 billion B. 27.5 billion C. 46 billionD. 93 billion1 The universe is about _ years old.2 The observable universe is about _ light years across in diameter.3 Today the distant objects like stars that we can observe are a bit more than _ light years away.Lead inADCPart 2View and learn View and learnL
4、ets fill in the blanks according to the rest of the video.QuestionsObservable UniverseWhole Universe1 How big is it?2 Is there an edge?3 Is there a centre?4 Is it getting bigger?_Before watching, you can read the questions carefully.View and learnView and learnNow it is your turn to fill in the blan
5、ks.QuestionsObservable UniverseWhole Universe1 How big is it?2 Is there an edge?3 Is there a centre?4 Is it getting bigger?_About 93 billion light years across in diameter. Infinite. Yes. No. Yes. Earth/You No. Yes. Yes. View and learnWatch the video again and then discuss the following questions.1
6、What is the Earth compared to? Is the comparison useful in understanding the infiniteness of the universe?2 What methods does the presenter use to enable viewers to understand this piece of knowledge in physics?View and learnView and learnDiscuss the questions with your partners.Part 3Useful express
7、ionsUseful expressionsMore specifically, the observable universe is the region of space visible to us from Earth.specifically adv. 明确地more specifically 更具体地说observable = observe + able 能看得到的 region n. 区域; (通常界限不明的)地区; 地方; 行政区Useful expressions., then regardless of what direction we look, we see ligh
8、t that has been travelling at most 13.8 billion years.regardless of 不管、不顾，后面常接名词或从句，一般用于客观上无法避免的事实，往往是不利的条件，需要主语去正面对待。We will continue the race, regardless of the weather.I tell the truth, regardless of what they want to hear.Useful expressions.so it is logical to think of the observable universe mu
9、st then be two times 13.77 equals 27.5 billion light years across.think of 考虑equal adj. 相同的，同样的 on equal terms 平等相处 equal in的意思是“在方面相等或平等”; equal to 和equal with则表示“等于”;equal to强调“相等”, equal with强调“平等”Useful expressions., the size of the Earth within the observable universe is roughly equivalent to t
10、he size of a virus within the solar system.the size of .的尺寸equivalent adj. 相等的；相同的equivalent weight 当量 equivalent force 等效力solar system 太阳系Useful expressions. because we cannot really appreciate the incomprehensible smallness of a virus nor the bewildering bigness of our solar system either.apprecia
11、te doing 感谢做.incomprehensible = in + comprehensible 无法理解的 bewildering adj. 令人困惑的 = confusing Useful expressionsSo lets just say that the observable universe is stupendously big.stupendously adv. 巨大地discover stupendously 了不起地发现waste stupendously 惊人地浪费increase stupendously 惊人地增长Useful expressionsBut t
12、he whole universe, as far as we can tell, is a lot bigger.as far as 只要；直到. 为止Useful expressionsSpace is most likely infinite, or at least it doesnt have an edge.infinite adj. 极大的；无法衡量的at least 至少at most 至多Useful expressionsThe whole universe is probably infinite.probably adv. 可能；大概probably 用法：主要修饰谓语
13、动词,在句子里如果有一个助动词和一个主要动词, probably应紧跟在助动词之后; 如果有两个以上助动词, probably放在第一个助动词之后。That hotel probably costs no less than 20 dollars a night.Useful expressions. and the whole universe has a temporal edge or what we call a beginning, but almost certainly not a spatial one.temporal adj. 颞的temporal edge 颞缘spati
14、al adj. 空间的Useful expressionsWe are at the center of the observable universe because the observable univers is just a region of space visible from Earth.at the center of 在的中心Useful expressionsIn fact, if you want to be more precise, each one of us is the center of our own observable universe,.in fac
15、e事实上= actuallyeach one of us 我们中的每个人，作主语时，谓语动词用单数。Useful expressionsYes, space is expanding, which makes both the observable universe and the whole universe bigger.非限制性定语从句空间在膨胀，这使得可观测的宇宙和整个宇宙都变大了。Part 4HomeworkHomeworkRecite the key expressions and sentences.Lets find more information online and share with the class.
