2014年春_人教版八年级下英语unit7全单元课件.ppt

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1、Unit 7Whats the highest mountain in the world?square n. 平方平方meter n. 米米deep adj. 深的深的desert n. 沙漠沙漠population n. 人口人口Asia n. 亚洲亚洲tour v. n. 旅行旅行tourist n. 旅行者旅行者wall n. 墙墙amazing adj. 令人大为惊奇的令人大为惊奇的ancient adj. 古代的古代的wide adj. 宽的；宽阔和宽的；宽阔和Language Goal:Talk about geography and nature一、用英语写出下列数字：一、用英

2、语写出下列数字：ninety-eight thousand seven hundred and fifty-four Nine hundred and eighty-threeExercise five hundred (and) sixty-six seven hundred and nine 566_ 709_ 983_ 98, 754_ _练一练练一练345100118,657,421three hundred and forty-fiveone thousand (and) oneeighteen million, six hundred and fifty-seven thousan

3、d, four hundred and twenty-one3, 872Three thousand eight hundred and seventy-two46, 290 Forty-six thousand two hundred and ninety58, 230 Fifty-eight thousand two hundred and thirty59684,3219,648,215five hundred and ninety-sixeighty-four thousand three hundred and twenty-oneNine million, six hundred

4、and forty-eight thousand, two hundred and fifteenQomolangma about 9,600,000 square kilometers in sizeThe Sahara 1,025 meters deepThe Caspian Sea 6,671 kilometers longThe Nile 8,844.43 meters high 1a. Match the facts you know.1. Qomolangma is_ than any other mountain in the world.2. The Sahara is _ d

5、esert in the world.3. The Caspian Sea is _ of all the salt lakes.4. The Nile is _ river in the world.1b. Listen and complete the sentences.higherthe biggestthe deepestthe longest1c. Use the information in 1b to make conversations.A: What is the highest mountain in the world?B: Qomolangma.A: What is

6、the biggest desert in the world?A: What is the deepest salt lake in the world?A: What is the longest river in the world?B: Sahara.B: Caspian sea.B: Nile._ The Yangtze River is about _kilometers long and the Yellow River is_ kilometers long._ China has the biggest population in the world. Its a lot b

7、igger than the population of the US.2a. Listen and number the facts 1-4 in the order you hear them.6,3005,0005,46430024_ China is over _ years old. It has a much longer history than the US. The US is not even_ years old._ China is almost as big as the US, and it is the biggest country in Asia.132b.

8、Listen again and fill in the blanks in 2a with the numbers in the box._ The Yangtze River is about _kilometers long and the Yellow River is_ kilometers long._ China has the biggest population in the world. Its a lot bigger than the population of the US.6,3005,0005,464300246,3005,464_ China is over _

9、 years old. It has a much longer history than the US. The US is not even_ years old._ China is almost as big as the US, and it is the biggest country in Asia.135,000300A: Did you know that China is one of the oldest countries in the world?B: Yes, I did. Its much older than my country.2c. Make conver

10、sations using the information in 2a.18,657,421eighteen million, six hundred and fifty-seven thousand, four hundred and twenty-one9,648,215Nine million, six hundred and forty-eight thousand, two hundred and fifteen58, 230 Fifty-eight thousand two hundred and thirty1.in size 在大小上在大小上2. one of the olde

11、st countries 最古老的国家之一最古老的国家之一3. feel free to do sth. 随意地做某事随意地做某事4. as far as I know 据我所知据我所知5. man-made objects 人造物体人造物体6. the highest mountain 最高的山脉最高的山脉Guide： Feel free to ask me anything on todays Great Wall tour.Tourist 1：How long is the wall?Guide： Ah, the most popular question! If were only t

12、alking about the parts from the Ming Dynasty, its about 8,850 kilometers long. This makes it the longest wall in the world.2d. Role-play the conversation.Tourist 2: Wow, thats amazing! Why did the ancient emperors build the wall? Guide: The main reason was to protect their part of the country. As yo

13、u can see， its quite tall and wide. As far as I know, there are no man-made objects as big as this.Tourist 3: Is Badaling part of the Ming Great Wall?Guide: Yes, its the most famous part.the Himalayasthe Amazon Riverparagraph n.southwestern adj.thick adj.include v.freezing adj.condition n.take in 喜马

14、拉雅山脉喜马拉雅山脉亚马逊河亚马逊河段；段落段；段落西南的；西南方向的西南的；西南方向的厚的；浓的厚的；浓的包括；包含包括；包含冻冰的；结冰的冻冰的；结冰的条件；状况条件；状况吸入；吞入（体内）吸入；吞入（体内）succeed v.Japan n.challenge v.in the face of achieve v.force n.nature n. ocean n. the Pacific Ocean实现目标；成功实现目标；成功日本日本挑战；考验挑战；考验面对（问题、困难等）面对（问题、困难等）达到；完成；成功达到；完成；成功力；力量力；力量自然界；大自然自然界；大自然大海；海洋大海；海

15、洋太平洋太平洋1、run along 跨越跨越 2. freezing weather 冰冻的天气冰冻的天气3. take in air 呼吸空气呼吸空气4. the first people to do sth. 第一个做某事的人第一个做某事的人5. in the face of difficulties 面临危险面临危险6. give up doing sth. 放弃做某事放弃做某事7. achieve ones dream 实现某人的梦想实现某人的梦想8. the forces of nature 自然界的力量自然界的力量9. reach the top 到达顶峰到达顶峰10. even

16、 though 虽然虽然;尽管尽管3a. Read the article and match each paragraph with the main ideas. Qomolangma the Most Dangerous Mountain in the World?One of the worlds most dangerous sports is mountain climbing, and one of the most popular places for this is the Himalayas. The Himalayas run along the southwestern

17、 part ofChina. Of all the mountains, Qomolangmarises the highest and is the most famous. It is 8,844.43 meters high and so is very dangerous to climb. Thick clouds cover the top and snow can fall very hard. Even more serious difficulties include freezing weather conditions and heavy storms. It is al

18、so very hard to take in air as you get near the top.The first people to reach the top were Tenzing Norgay and Edmund Hillary on May 29,1953. The first Chinese team did so in I960, while the first woman to succeed was Junko Tabei from Japan in 1975.Why do so many climbers risk their lives? One of the

19、 main reasons is because people want to challenge themselves in the face of difficulties. The spirit of these climbers shows us that we should never give up trying to achieve our dreams. It also shows that humans can sometimes be stronger than the forces of nature.Paragraph 1 Spirit of climbersParag

20、raph 2 Achievements of climbers Paragraph 3 Facts and dangersParagraph 1List four dangers for climbers:thick cloudsSnow slide;Freezing weather conditions;Heavy storm;3b. Read the article again and complete the chart.Paragraph 2List three achievements:1953 - Tenzing Norgay and Edmund Hillary were the

21、 first to reach the top;1960 - The first Chinese team did so; 1975 the Japanese Junko Tabei succeeded doing so.Paragraphs 1 & 3List four comparisons: most dangerous sport;most popular places;the highest mountain;the most famous mountain1.Where are the Himalayas?2. How high is Qomolangma?3c. Answer t

22、he questions using information from the article.The Himalayas run along the southwestern part of China.It is 8,844.43 meters high.3. Why do so many people try to climb this mountain even though it is dangerous?4. What does the spirit of the climbers tell us?One of the main reasons is because people

23、want to challenge themselves in the face of difficulties. The spirit of these climbers shows us that we should never give up trying to achieve our dreams. It also shows that humans can sometimes be stronger than the forces of nature.1. Feel free to ask me anything on todays Great Wall tour. 在今天的在今天的

24、长长城游城游中，大中，大家尽家尽管管问我任何问我任何问问题，题，不要拘不要拘束束。 feel free是英语是英语口口语中一个常用表达。语中一个常用表达。若若有人有人让你让你feel free to do something,就是让你无需拘就是让你无需拘束，只管按照自己的意愿去做某事。束，只管按照自己的意愿去做某事。e.g. A: Can I use your bathroom? 我可以用一下你的卫生间吗？我可以用一下你的卫生间吗？ B: Yes, feel free.可以，请随意。可以，请随意。Language points2. As far as I know, there are no

25、man-made objects as big as this. 据我所知，据我所知，再没有再没有像它这样像它这样大大的人造物的人造物体体了。了。as far as I know 是一个是一个固固定的表达方式，还可以定的表达方式，还可以说说so far as I know，意思是意思是“据我所知据我所知”。例如：例如：As far as I know, Jacks got twin sisters.就我所知，杰克有一对孪生姐妹。就我所知，杰克有一对孪生姐妹。Theyre not coming today, so far as I know.他们今天不来他们今天不来了了 就我所知是这样的。就我所

26、知是这样的。3. the Ming Great Wall 明长城明长城“明长城明长城”是指明朝时期为了防御北方游是指明朝时期为了防御北方游牧民族的骚扰，历时一百多年在北部地区牧民族的骚扰，历时一百多年在北部地区 修筑的军事防御工程。这段长城东起辽宁修筑的军事防御工程。这段长城东起辽宁虎山，西至甘肃嘉峪关，从东向西横贯多虎山，西至甘肃嘉峪关，从东向西横贯多个省、个省、 直辖市、自治区，直辖市、自治区，全长约全长约8850千千米米，是现存历代长城遗迹中最完整、最坚，是现存历代长城遗迹中最完整、最坚固的。固的。4. Even more serious difficulties include fre

27、ezing weather conditions and heavy storms.更加严峻的更加严峻的困困难包括极冷的天气状况和巨大的难包括极冷的天气状况和巨大的风风暴暴。1）difficulty既可作可数名词也可作不可数名既可作可数名词也可作不可数名词词，在此用作可数名词。，在此用作可数名词。作可数名词时作可数名词时, difficulty通常用作复数通常用作复数，表示具体概念，即：表示具体概念，即：各种各样的各种各样的“困难；难题；难事困难；难题；难事”。例如：例如：People learning a new language may face some difficulties.人们学

28、习一门新的人们学习一门新的语语言言 时可能会遇到一些时可能会遇到一些困困难。难。If you have any difficulties, you can call me for help.如果你遇到任何困难，给我打电话求助好了。如果你遇到任何困难，给我打电话求助好了。作不可数名词时，作不可数名词时，difficulty可译作可译作“困难；艰困难；艰难；辛苦；费劲难；辛苦；费劲”，例如：例如：He had great difficulty in finding a new job. 他找新的他找新的 工工作费作费了了很大劲。很大劲。.We found the house without dif

29、ficulty. 我们轻而易举地找到广那座房子。我们轻而易举地找到广那座房子。2）include表示表示“包括；包含包括；包含”，是一个，是一个及物动词。及物动词。例如：例如：Does your price of the bike include this light?你们的车价包含这你们的车价包含这盏盏车灯吗？车灯吗？5. The spirit of these climbers shows us that we should never give up trying to achieve our dreams.这些这些登山者的精神向我们表明：我们绝不应该登山者的精神向我们表明：我们绝不应该

30、放弃实现自己梦想的尝试。放弃实现自己梦想的尝试。1）give up doing something 的意思是的意思是“放弃做放弃做某事；半途而废某事；半途而废”He gave up learning a third language after he got the job.他找到工作之后就放弃了对第三门语言的学习。他找到工作之后就放弃了对第三门语言的学习。2 ) achieve our dreams 相当于相当于make our dreams come true其中动词其中动词achieve表示表示“（通过努力）实现；通过努力）实现；取得；获取；达到取得；获取；达到（梦想、成绩、成功、目梦想

31、、成绩、成功、目的的)”等。等。例如：例如：He achieved great success in a short time.他用很短的时间取得了极大的成功他用很短的时间取得了极大的成功。Lin Tao achieved very good exam results.林涛考试取得林涛考试取得了了 很好的成绩。很好的成绩。一一 写出下列单词的比较级和最高级写出下列单词的比较级和最高级1. good2. comfortable3. big4. happy5. cheap6. many7. difficult8. little 1. good 2. comfortable 3. big 4. ha

32、ppy 5. cheap 6. many 7. difficult 8. littlebetter bestmore most bigger biggesthappier happiestcheaper cheapestmore mostmore most less least 1. Lily gets up _ (early) than Lucy. 2. Which goes _ (slowly), Tom or Jim? 3.This book is _ (interesting) than that one.earliermore slowly more interesting二二 根据

33、所给词的适当形式填空根据所给词的适当形式填空 4. She works _ (careful) in her school. 5. Who goes to bed _ (late) Jim, Tom or Jack? 6. I think turkey is _ (delicious) of all. the most carefully latestthe most deliciousHomework Can you think of more examples to show isthe mostin the world? Compete with yourclassmates. Unit

34、 7Whats the highest mountain in the world?Grammar FocusWhats the highest mountain in the world?Qomolangma.How high is Qomolangma?Its 8,844.43 meters high. Its higher than any other mountain.Which is the deepest salt lake in the world?The Caspian Sea is the deepest of all the salt lakes.Did you know

35、that China is one of the oldest countries in the world?Yes, I did. Its much older than the US.4a. Fill in the blanks with the correct forms of the words in the box.1. The Amazon River is one of the _ rivers in the world. Its a little _ than the Yangtze River.2. Qomolangma is 8,844.43 meters_. big mu

36、ch popular long old highlongestlongerhigh Its one of the most_ places for serious mountain climbers.3. No ocean in the world is as _ as the Pacific Ocean.4. Although Japan is _ than Canada, it is _smaller.popularbigoldermuche.g. Two rivers：_ and _4b. Write two comparisons about two topics. Write tru

37、e facts. the Yangtze Riverthe Amazon RiverThe Yangtze River is almost as long as the Amazon River.The Amazon is longer than the Yangtze, but the Yangtze is the longest river in China.Two cities：_ and _1._2._ _Two animals：_ and _1._ 2._ _4c. Write five questions using comparisons. Then ask your partn

38、er your questions.1._2._3._4._5._What is the highest building in our city?Who is the oldest people in our city?What is the most popular street in our city?What is the most delicious food in our city?Where is the busiest road in our city?Grammar Focus(一一)数词数词 Numeral数词是用来表示事物的数目和顺序的数词是用来表示事物的数目和顺序的词。

39、词。数词的分类：数词的分类：1.基数词基数词2.序数词序数词3.分数词分数词今天我们先来学习一下基数词。今天我们先来学习一下基数词。1. 1. 复习复习11001100以内的所有数字。以内的所有数字。2. 2. 掌握百、千、万、十万、百万的掌握百、千、万、十万、百万的表达法。表达法。1、1-19的基数词 one 1 two 2 three 3 four 4 five 5 six 6 seven 7 eight 8 nine 9 ten 10 eleven 11 twelve 12 thirteen 13 fourteen 14 fifteen 15 sixteen 16 seventeen 1

40、7 eighteen 18 nineteen 192、2090等十位数twenty 20thirty 30forty 40fifty 50sixty 60seventy 70eighty 80ninety 90 twenty-one 21 twenty-two 22 其它的十位数照此类推，如其它的十位数照此类推，如： thirty-one 31 forty-two 42 seventy-five 75 ninety-six 963、百、千、万 百百 hundred 100 one hundred 200 two hundred 以此类推以此类推 千千 thousand 1 000 one th

41、ousand 2 000 two thousand英语里没有英语里没有“万万”这一单位，这一单位，万也用万也用thousand表示。如：表示。如：10 000 ten thousand 一万一万20 000 twenty thousand 两万两万 4、十万、百万十万的说法是：十万的说法是： 100.000 a (one) hundred thousand 200.000 two hundred thousand million 百万百万 a (one) million 1,000,000 two million 2,000,000 以此类推以此类推 8,000,000 eight milli

42、on练一练练一练345100118,657,421three hundred and forty-fiveone thousand (and) oneeighteen million, six hundred and fifty-seven thousand, four hundred and twenty-one1.The project lasted 5 years and cost 2 billion dollars.2. The Chinese have been making paper for two thousand years.3. One thousand pounds is

43、 a lot of money.表示确定数量时表示确定数量时 用基数词用基数词+ hundred，thousand，million，billion多位基数词读法多位基数词读法457890608389three hundred and eighty-ninefour hundred and fifty-seveneight hundred and ninetysix hundred and eight 102 one hundred and two635 six hundred and thirty-five2)三位数以上的数，从个位往前数，每三位数三位数以上的数，从个位往前数，每三位数加一个逗

44、号，从后往前数的第一个逗号代表加一个逗号，从后往前数的第一个逗号代表thousand, 第二个逗号代表第二个逗号代表million, 第三个逗第三个逗号是号是billion，注意，注意这几个词不能用复数形式，这几个词不能用复数形式，后也不能加后也不能加and。例如：。例如： 2,648 two thousand, six hundred and forty-eight 16,250,064 sixteen million, two hundred and fifty thousand, sixty-four 确切数目与不确切数目的表达确切数目与不确切数目的表达：hundred, thousan

45、d, million, billion等前面有等前面有基数词，基数词，表示确切数目时，用单数，后直接表示确切数目时，用单数，后直接接复数名词；接复数名词；如：如：three hundred books one hundred people five thousand students seven million starts表示不确切数目时，这类词后加表示不确切数目时，这类词后加-s且与且与of连连 用。用。如：如： hundreds of people thousands of students millions of birds billions of lions注意：这类短语中，名词前如

46、有定冠词、指注意：这类短语中，名词前如有定冠词、指 示代词或形容词性物主代词时，可加示代词或形容词性物主代词时，可加of, 但但 表示的是范围。如：表示的是范围。如：two hundred of the workers工人中的二百（人）工人中的二百（人）Grammar Focus(二二)形容词的比较级和最高级形容词的比较级和最高级 comparatives and superlatives with adj. and adv.short-shortersmall-smallernicenicersafesafer-bigthinheavyheavierhappyhappierbigbigger

47、thinthinnerdelicious more delicious interesting more interesting important more important carefully-more carefully quickly-more quickly slowly-more slowlyeasily- more easily大多数形容词和副词有三个等级：大多数形容词和副词有三个等级：原级、比较级、最高级原级、比较级、最高级。一、一、形容词比较级的构成形容词比较级的构成 1.1.构成的不规则变化构成的不规则变化: : 2. 2.构成的规则变化构成的规则变化: :1. 构成的不

48、规则变化构成的不规则变化:e.g. good / well better best bad / badly worse worst many / much more most little less least far farther / further farthest/ furthest2. 构成的规则变化构成的规则变化:1) 单音节词和少数双音节词一般在词尾单音节词和少数双音节词一般在词尾 后加后加-er 构成比较级构成比较级 或或-est构成最高级构成最高级. 如：如： 原级原级 比较级比较级 最高级最高级 cold colder coldest bright brighterbrig

49、htest young younger youngest2) 以字母以字母 e 结尾的词只加结尾的词只加 r 或或-st 构成构成 比较级比较级和和最高级最高级。 原级原级 比较级比较级 最高级最高级 nice nicer nicest fine finer finest large larger largest3) 重读闭音节词末尾只有一个辅音字母重读闭音节词末尾只有一个辅音字母时时, 先双写这个辅音字母先双写这个辅音字母, 再加再加-er或或-est。如如: big bigger biggest thin thinner thinnest 4) 以以“辅音字母辅音字母+ y”结尾的双音节词

50、，结尾的双音节词， 先改先改y为为i, 再加再加-er或或-est。如：。如： easy easier easiest happy happier happiest5) 多音节词和部分双音节词在词前加多音节词和部分双音节词在词前加more 或或most。如：。如： delicious more delicious most delicious interesting more interesting most interesting importantmore important most importantcarefully-more carefully-most carefullyquic