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1、用心爱心专心-1-Unit 14 DinosaursDeaths一一.教学内容：教学内容：Unit 14 DinosaursDeaths二、教学目标二、教学目标知识目标：熟练掌握本单元课文中的单词，短语和句型。能力目标：培养学生的综合运用知识的能力。三、教学难点：三、教学难点：培养学生的综合能力四、本单元重点知识：四、本单元重点知识：单词：要求大家掌握本单元单词表中的单词（一）短语：1.work on从事2.live on以为食，继续活着3.have a close relation有密切关系4.lead to导致5.stop sb.from doing sth.阻止某人做某事6.more r
2、easonable更合理7.make a study of对进行研究8.the cause of.的起因9.as a result因此10.at the same time同时（二）句型：1.This hole was believed to be caused by a large object that fell from space sixtyfive millionyears ago.人们认为这个坑是由 6500 万年前从外太空中陨落的巨大物体造成的。2.Though it is proved that this large object had a close relation wi
3、th the death of dinosaurs andother animals,scientists have different opinions upon how the large object led to the death of theancient animals.尽管已证实这个巨大的物块和恐龙及其他动物的灭绝有密不可分的关系，但科学家们对这一物体如何导致这些远古动物的灭绝仍持有不同的意见。五、本讲重点知识讲解：五、本讲重点知识讲解：Dinosaurs are extinct now.Scientists are always wondering about the cau
4、se of theirextinction.This proves to be difficult,but scientists are still working on it.It is reported that there is a huge hole in the ground in eastern Mexico.This hole wasbelieved to be caused by a large object that fell from space sixty-five million years ago.At about用心爱心专心-2-the same time,dino
5、saurs living on the ground disappeared.Though it is proved that this largeobject had a close relation with the death of dinosaurs and other animals,scientists have differentopinions upon how the large object led to the death of the ancient animals.译文：恐龙现在已经绝迹了。科学家们一直想搞清楚它们绝迹的原因。这不是一件容易的事情，但是科学家们依然在努
6、力。据说在墨西哥东部有个巨大的坑，人们认为这个坑是由 6500 万年前从外太空中陨落的巨大物体造成的。在那时候，生活在陆地上的恐龙就绝迹了。因此，人们认为那个巨大的物体可能是导致恐龙死亡的原因。尽管已证实这个巨大的物体和恐龙及其他动物的灭绝有密不可分的关系，但科学家们对这一物体如何导致这些远古动物的灭绝仍持有不同的意见。Twenty years ago,scientists discovered that a large cloud of dust was created by the crash ofthe large object.They reasoned that sunlight w
7、as stopped from reaching the earth by the cloud.Asa result,the weather became very cold.The cold weather and less sunshine killed many plantswhich were the food of dinosaurs and other animals.Because of no food the animals soon died.译文：20 年前，科学家们发现这个巨大的物体与地面碰撞后会产生一个巨大的尘雾团，从而阻碍了太阳光照射地面。因此，天气变得非常冷。寒冷的
8、天气和缺少阳光使很多植物死亡，而这些植物正是恐龙和其他生物赖以生存的食物。因为没有食物，这些动物很快就死亡了。About ten years ago,when scientists from the United States and Mexico found that the largeobject caused a huge hole in Mexico,some scientists raised another theory.They said that theobject was not big enough to create a deadly cloud of dust,but
9、it hit with such great force thatpoisonous chemicals were released.Dinosaurs and other ancient animals were poisoned by thechemicals and then died.译文：大约 10 年前，美国和墨西哥的科学家们发现这个巨大的物体在墨西哥砸出的一个大坑。一些科学家又提出了另一种理论。他们说这个物体还没有大到能够产生致命的尘雾团的地步，但认为物体的强烈撞击致使其散发出有毒的化学物质。恐龙和其他的生物就是被这些有毒的化学物质毒死的。Which of the two vie
10、ws is more reasonable,the first or the second?Maybe both.In order totest their discoveries,scientists are preparing to make a study of the rocks that remain after thelarge object hit.They hope that in the future we will have a better understanding of any chemicalreactions which have influenced the e
11、nvironment.译文：这两种观点哪一种更有道理呢？是第一种还是第二种？可能两个都有道理。为了验证他们的发现，科学家们准备研究巨石撞击地面后保留下来的岩石。他们希望未来我们能够对损害环境的化学反应有更多的了解。用心爱心专心-3-【典型例题】【典型例题】阅读与表达阅读短文，根据其内容回答问题Gone are the days when men and women couldnt associate(交往)with each other.When weare asked whether boys and girls can associate with each other,most of u
12、s will say,“Yes,ofcourse.Why not?”If we want to deal with the association between boys and girls properly,here are some“dosand donts”for you to follow.Keep a normal and healthy state of mind（心态）.Our schools and classes are made up ofboys and girls.It is very natural for boys and girls to contact eac
13、h other and build up the friendshipwith the students of the other sex.Generally speaking,we should broaden the circle of theassociation.We should make as many friends as possible.We should have more friends of theother sex instead of one or two.We should contact the students in public instead of in
14、secret.Contact students of the other sex warmly,generously and sincerely.Dont be too nervousor too shy in contact with a person of the other sex.In that case it is very difficult for you to makea lot of friends,as no one likes a person who is too shy to say a word.If you are too shy a person,you can
15、 also find a way out.First of all,you can contact the students with the same interest andhobby with you.As both of you have much in common,you may have much to talk about.If youkeep doing like that,little by little,you will gladly find you are also as free to express yourself asothers.Dont fall into
16、 the ditch（泥潭）of early love.The boys and girls at adolescence(青春期)are rich in feeling and full of imagination.They are easy to regard the friendship as a sign of loveand fall in love with each other at an early age.In my opinion,boys and girls at middle school aretoo young and too tender to shoulder
17、 the heavy duty of love.Early love is a green apple that cantbe eaten.An apple wont taste sweet until it is fully ripe(成熟).Do keep out of early love.1.Should boys and girls contact each other in public or in secret?_2.What does the underlined sentence in the 3rd paragraph mean?_3.Does the writer think the boys and girls at adolescence should have early love?_4.How many tips does the writer give us?_5.Whats the purpose of writing this passage?_