人教版八下英語U7課件.ppt

1、1,Unit 7 Whats the highest mountain in the world?,Presentation,square n. 平方,meter n. 米,綠色圃中學(xué)資源網(wǎng)http:/CZ.L綠色圃中小學(xué)教育網(wǎng),綠色圃中學(xué)資源網(wǎng)http:/CZ.L綠色圃中小學(xué)教育網(wǎng),deep adj. 深的,desert n. 沙漠,population n. 人口,Asia n. 亞洲,tour v. n. 旅行,tourist n. 旅行者,wall n. 墻,amazing adj. 令人大為驚奇的,ancient adj. 古代的,wide adj. 寬的；寬闊和,Qomolangm

2、a,Qomolangma runs along the border between China and Nepal. It is covered with snow all the year round. Its 8844.43 high, the highest in the world. Its 26 kilometers long.,the Sahara,The Sahara is the biggest desert in the world. It is located in the northern Africa, climate conditions are very bad,

3、 is one of the earths most not suitable for biological survival.,the Caspian Sea,The Caspian Sea is the biggest lake in the world. It lies in the border between Asia and Europe.,the Nile,The Nile is the longest river in the world. Its more than 6600 kilometers long. It runs through 9 countries, its

4、one of the largest river flows through the international states in the world and runs into the Mediterranean Sea(地中海) in the end.,the Yangtze River,The Yangtze River is the third longest river in the world, the first Asian rivers. Its 6211.31 kilometers long. The Yangtze River Basin, east-west width

5、 of 3219 kilometers, about 966 kilometers wide north-south, passing through 11 provinces. It runs into the East Sea in Shanghai finally.,1a,Match the facts you know.,8,844 meters high. 8,844米高 meters high (long, wide) 米高（長，寬)。 英語表示“有多長（寬，高）”時(shí)，一般將數(shù)詞和數(shù)量單位放在表示長寬高的形容詞前作狀語。 e.g. The wall is 1.7 metres wi

6、de.,Explaination,1b,Listen and complete the sentences.,1. Qomolangma is _ than any other mountain in the world. 2. The Sahara is _ desert in the world. 3. The Caspian Sea is _ of all the salt lakes. 4. The Nile is _ river in the world.,higher,the biggest,the deepest,the longest,2a Listen and number

7、the facts(1- 4) in the order you hear them.,6,300 5,000 5,464 300,_ 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. _ China is over _ years old. It has a much long

8、er history than the US. The US is not even _ years old. _ China is almost as big as the US, but it is the biggest country in Asia.,4,2,1,3,綠色圃中學(xué)資源網(wǎng)http:/CZ.L綠色圃中小學(xué)教育網(wǎng),2b Listen again and fill in the blanks in 2a with the numbers in the box.,6,300 5,000 5,464 300,_ The Yangtze River is about _ kilome

9、ters 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.,6,300,5,464,_ 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,

10、 but it is the biggest country in Asia.,5,000,300,Please read the conversation in 2d.,Whats the conversation about?,Its about a tour to the Ming Great Wall.,Read again and answer the questions in 2d.,1. How long is the Ming Great Wall? 2. What does the guide say about the wall?,Its about 8,850 kilom

11、eters long.,Its quite tall and wide. / Its the longest wall in the world. ,Language points,表示人口“多”要用large或big；表示人口“少”要用small。 China has the largest population in the world.,Population：意為“人口數(shù)量”，“人口”，是一個(gè)集合名詞 .,population常與定冠詞the連用, 作主語用時(shí),謂語動(dòng)詞常用第三人稱單數(shù)形式。 The worlds population _increasing_. 全世界的人口增長得越來越

12、快。 The population of China is about 1,300,000,000. 中國人口大約有13億。,faster and faster,is,當(dāng)主語是表示“人口的百分之幾、幾分之幾”時(shí),謂語動(dòng)詞用復(fù)數(shù)形式 . eg:中國大約有百分之七十的人口是農(nóng)民。 About seventy percent of the population in China are farmers,詢問某國、某地有多少人口時(shí), “How large.?”; 在問具體人口時(shí)用“What.?”。 你們家鄉(xiāng)有多少人口? 加拿大的人口有多少?,How large is the population of

13、 your hometown?,What is the population of Canada?,Practice,這個(gè)城市的人口是600萬。 The population of this city is six million 中國的人口比美國的人口多很多。 The population of China is much larger than that of the USA.,2. Did you know that China is one of the oldest countries in the world? that China is是know的賓語從句。盡管主句的動(dòng)詞是過去時(shí)

14、態(tài)，但由于賓語從句陳述的是客觀事實(shí)，所以從句仍用一般現(xiàn)在時(shí)。,3. Its much older than my country.,much higher 意為“高得多”。在形容比較級前還可以用much, even, a little, still ,a lot, less等修飾詞表示程度。,Practice,他比我跑得更快。 He runs even faster than I. 日本土地面積只比德國大一點(diǎn)兒。 Japan is a little larger than Germany in area.,1. Fell free to ask me anything on todays Gr

15、eat Wall tour. 在今天的長城游中，大家盡管問我任何問題，不要拘束。,fell free是英語口語中一個(gè)常用表達(dá)。若有人讓你feel free to do something，就是讓你無需拘束，只管按照自己的意愿去做某事。,Language points,e.g. A: Can I use your bathroom? 我可以用一下你的衛(wèi)生間嗎？ B: Yes, feel free. 可以，請隨意。,as far as I know是一個(gè)固定的表達(dá)方式，還可以說so far as I know，意思是“據(jù)我所知”。,2. As far as I know, there are no

16、 man-made objects as big as this. 據(jù)我所知，再?zèng)]有像它這樣大的人造物體了。,e.g. As far as I know, Jacks got twin sisters. 就我所知，杰克有一對孿生姐妹。 Theyre not coming today, so far as I know. 他們今天不來了 就我所知是這樣的。,Language points,1The Sahara is about 9,600,000 square kilometers in size. square是可數(shù)名詞，意為“平方；正方形”。square用于專有名詞時(shí),其前不加冠詞。 如：

17、Ask each student to draw 16 squares on a piece of paper. 要求每個(gè)學(xué)生在紙上畫16個(gè)正方形。 I would estimate the size of the garden at 100 square metres. 據(jù)我看,這花園總面積100平方米左右。,Language points,2. The Caspian Sea is 1,025 meters deep. （1）deep是形容詞，意為“深的；縱深的”。 如：This river is about 6 meters deep. 這河大約有六米深。 His personality

18、 left a deep impression on us. 他的人品給我們留下了深刻的印象。,（2）meter是名詞，意為“米；公尺”。 如：The boy is one meter tall in his stocking feet. 這個(gè)小男孩不穿鞋的身高是一米。 It is a mere 100 meter from my house to the theater. 從我家到劇場只有一百公尺。,Language points,Language points,(2)biggest是形容詞big的最高級，意為“最大的”。 如：This is the biggest animal that

19、I have ever seen.這是我見過的最大的動(dòng)物。 形容詞的最高級用于表示三者或三者以上（人或物）的比較中，在某方面超過其他人或物。最高級的前面要加定冠詞the，后面可帶of/in短語來說明比較的范圍。 如：Its the most expensive car in the world. 它是世界上最昂貴的汽車。 Whose drawing is the best of all? 在所有畫當(dāng)中誰的畫最好？,Language points,5. Feel free to ask me anything on todays Great Wall tour. wall 是可數(shù)名詞，意為“墻,

20、圍墻”,in the wall表示“在墻的里面”; 而on the wall表示“在墻的表面”。the Great Wall(長城)是the Great Wall of China(中國長城)的簡稱。 如：The explosion caused the walls of the building to fall in. 爆炸使建筑物的墻倒塌了。 He who does not reach the Great Wall is not a true man. 不到長城非好漢。,freezing adj. 極冷的； 冰凍的,nature n. 大自然,thick adj. 厚的；濃的,New wo

21、rds,1. achievement n. 成就；成績 e.g. We felt a great sense of achievement when we reached the top of the mountain. 當(dāng)我們到達(dá)山頂?shù)臅r(shí)候，我們有一種巨 大的成就感。 2. achieve v. 達(dá)到；完成；成功 e.g. He will never achieve anything if he doesnt work harder. 如果他不加緊努力工作，他會(huì)一事無成。,Learn more new words.,3. southwestern adj. 西南的；西南方向的 e.g. Is

22、 this Southwestern Airline? 這是西南航空公司嗎？ 4. include v. 包含；包括 e.g. Her hobbies include swimming and gardening. 她愛好游泳和園藝。 5. condition n. 條件；狀況 e.g. The piano was in good condition. 這臺(tái)鋼琴狀況良好。,6. take in 吸入；容納 e.g. Fish take in oxygen through their gills. 魚用鰓吸氧氣。 7. succeed v. 實(shí)現(xiàn)目標(biāo)；成功 e.g. If you try har

23、d youll succeed. 你如果努力就會(huì)成功。 常用短語：succeed in doing sth. e.g. Police have finally succeeded in solving the mystery. 警察最終成功破解了這個(gè)疑案。,8. challenge v. 冰凍的; 極冷的 Its freezing outside now. 現(xiàn)在外面冷極了。 Its very cold today, the temperature has dropped to freezing point. 今天很冷, 溫度降到了冰點(diǎn)。,freeze v. 凍結(jié)；冷凍；僵硬；凝固 Water

24、freezes at the temperature of 0 degrees Celsius. 水在攝氏零度結(jié)冰。 We ate some of the fruits and froze the rest. 我們吃了一些水果,把剩下的冷藏起來。,知識(shí)拓展,frozen既是freeze的過去分詞形式，也可用作形容詞，表示“冷凍的”。 These frozen foods are the most convenient of all. 這些冷凍食品是最為方便。,英譯漢 above / over freezing 零度以上 freezing weather 很冷的天氣 be frozen to d

25、eath 被凍死 give sb. a freezing cold 冷冷地看某人一眼,Practice, freezing machine 制冷機(jī) frozen meat 凍肉 Im frozen, so I cant write. 我凍壞了，不能寫東西了。 Im freezing, so Ive to put on a heavy coat. 我覺得冷極了，我得穿件厚大衣。,thick adj. 1. 濃的, 濃厚的; 粘稠的; 混濁的 It is dangerous to drive in a thick fog. 在濃霧天駕車很危險(xiǎn)。 2. 厚的; 粗的 How thick is the

26、 board? 這塊木板有多厚?,One of the worlds most dangerous sports is mountain climbing, “one of + the + 形容詞的最高級 + 復(fù)數(shù)名詞”，意為“最之一”。如： Miss Wang is one of the most popular teachers in our school. 王老師是我們學(xué)校最受歡迎的老師之一。,Language points,2. It is also very hard to take in air as you get near the top. It is + adj. + to

27、do sth.， it作形式主語 放在句首，而把真正的主語放在句 尾。常用于此句型的形容詞有 important， difficult， dangerous， necessary， useful， possible等，用 來對to do sth. 進(jìn)行說明。此句型可以 轉(zhuǎn)換成To do sth. is + adj.。,3. Even more serious difficulties include freezing weather conditions and heavy storms. difficulty 既可作可數(shù)名詞也可作不可 數(shù)名詞。,e.g. It is important to

28、 study English well. 學(xué)好英語很困難。 Its very difficult to climb Qomolangma. 攀登珠穆朗瑪峰很難。,作可數(shù)名詞時(shí)通常用復(fù)數(shù)，表示具體概 念，即：各式各樣的 “困難，難題，難 事”，如： Hes having financial difficulties. 他正手頭拮據(jù)。 作不可數(shù)名詞時(shí)，譯作“困難，艱難，幸 苦”，如： She had great difficulty in understanding him. 她很難理解他說的話。,4. The spirit of these climbers shows us that we s

29、hould never give up trying to achieve our dreams. give up 意為“放棄”，后面可以接名詞、代詞或v-ing形式作賓語。 注意：如果其賓語是名詞，那么名詞可 以放在 give 和 up 之間，也可以放在 up 之后；如果其賓語是代詞，那么代詞只 能放在 give 和 up 之間。如：,My uncle wants to give up drinking wine. 我叔叔想戒酒。 Although English isnt easy to learn, I wont give it up. 雖然英語不易學(xué)，但我不會(huì)放棄。,5. Why do

30、 so many people try to climb this mountain even though it is dangerous? even though 用作從屬連詞，意為“即使； 盡管”，相當(dāng)于even if，引導(dǎo)讓步狀語從 句，一般不與并列連詞but連用。如： Mr. Wang will come on time even though it rains. 盡管下雨，但王老師會(huì)按時(shí)來。,綠色圃中學(xué)資源網(wǎng)http:/CZ.L綠色圃中小學(xué)教育網(wǎng),綠色圃中學(xué)資源網(wǎng)http:/CZ.L綠色圃中小學(xué)教育網(wǎng),大多數(shù)形容詞有三個(gè)級。 1. 原級: Structure : as . as.

31、像.一樣 e.g. Tim is as tall as Tom. 2. 比較級 (用于兩者之間的比較): Structure：形容詞比較級 than . e.g. This box is bigger than that one.,形容詞和副詞的比較級和最高級,3. 最高級(用于三者或三者以上的比較): Structure: the + 形容詞的最高級of / in . e.g. Tom is the heaviest in our class. He is the most popular in our school.,規(guī)則變化 1) 一般情況下，單音節(jié)或雙音節(jié)的形容詞/副詞比較級er， 最

32、高級est。如: clever cleverer cleverest few fewer fewest small smaller smallest 等。,形容詞、副詞的比較級和最高級 規(guī)則變化和不規(guī)則變化,2) 以e結(jié)尾的詞，比較級r，最高級st 即可。 如： nice nicer nicest cute cuter cutest large larger largest 3) 以輔音字母y結(jié)尾的變y為ier或est 如: easy easier easiest happy happier happiest 再如：early, busy, heavy, dirty, lazy 也如此。,4)

33、 重讀閉音節(jié)，單輔音結(jié)尾的，雙寫這個(gè)輔音字母er 或 est的詞： fat fatter fattest thin thinner thinnest hot hotter hottest red redder reddest wet wetter wettest big bigger biggest,5) 多音節(jié)和部分雙音節(jié)的詞需要在形容詞 原級前more 構(gòu)成比較級，the most 構(gòu) 成最高級。如： beautiful more beautiful the most beautiful 又如: delicious, popular, important, interesting, exp

34、ensive, creative 雙音節(jié)的詞如: careful more careful the most careful useful more useful the most useful,少數(shù)單音節(jié)詞也是這樣，如： pleased more pleased the most pleased tired more tired the most tired b) 不規(guī)則變化： good better best well better best bad worse worst many/much more most,far farther farthest (距離遠(yuǎn)) far further

35、 furthest (程度深) old elder eldest (長幼) old older oldest (年齡),三者或三者以上相比，表示最高程度時(shí)，用“the + 最高級”的結(jié)構(gòu)表示。這種句式一般常有表示比較范圍的介詞短語。例如： Zhang Hua is the tallest of the three. He works (the) hardest in his class.,最高級的用法,綠色圃中學(xué)資源網(wǎng)http:/CZ.L綠色圃中小學(xué)教育網(wǎng),綠色圃中學(xué)資源網(wǎng)http:/CZ.L綠色圃中小學(xué)教育網(wǎng),2. 最高級可被序數(shù)詞以及 much，by far，nearly，almost，b

36、y no means，not quite，not really，nothing like 等詞語所修飾。例如： This hat is by farmuchnearlyalmostnot nearlyby no meansnot quitenothing like the biggest. How much did the second most expensive hat coat?,3. 表示“最高程度”的形容詞，如 excellent，extreme，perfect等，沒有最高級，也不能用比較級。 4. 形容詞最高級修飾作表語或介詞賓語的名詞、代詞時(shí)，被修飾的詞往往省略。 e.g. He

37、 is the tallest (boy) in his class. 5. 作狀語的副詞最高級前可以不加定冠詞。 e.g. Of all the boys he came (the) earliest.,比較級考點(diǎn) 比較級修飾問題a little, a bit, even, still, much, a lot, far 等可修飾比較級。 e.g. Tom is a little taller than Jim. This book is much more interesting than that one.,中考鏈接, 同級比較 e.g. The weather in Beijing i

38、s colder than that in Xian. Our school is bigger than yours. the + 比較級 e.g. Lucy is the fatter of the two girls., “a/an + 比較級”表示“又一，再一” e.g. Lily has a doll, but she wantsa bigger one. 隱性比較（沒有than的情況） e.g. Who runs faster, Lucy or Lily? Youd better come earlier next time. He worked hard last term, b

39、ut he works even harder this term., 越來越. 比較級 + and + 比較級 b. the + 比較級 + 句子，the + 比較級 + 句子 e.g. Its getting colder and colder. The more you exercise, the better you are.,2. 最高級考點(diǎn) 說明：形容詞的最高級前必須加the；副詞的最高級前省略the。 范圍問題 e.g. Tom is the tallest student in the class. Spring is the best season of the year.,

40、 “.之一”問題 e.g. Beijing is one of the biggest cities in the world. “the + 序數(shù)詞 + 最高級” e.g. I think he is the second tallest boy in his class.,綠色圃中學(xué)資源網(wǎng)http:/CZ.L綠色圃中小學(xué)教育網(wǎng),綠色圃中學(xué)資源網(wǎng)http:/CZ.L綠色圃中小學(xué)教育網(wǎng),3. 比較級和最高級的轉(zhuǎn)換 e.g. Tom is the tallest student in the class. = Tom is taller than any other student in the

41、 class. = Tom is taller than all the other students in the class. = No other students are taller than Tom.,總結(jié)： any other + 名詞單數(shù) the other + 名詞復(fù)數(shù) 否定 + 比較級 = 最高級 比較級 + 極限 = 最高級,同級比較 as + adj./adv. + as e.g. She is as thin as Lily. He writes as carefully as Linda. not + as/so + adj./adv. + as e.g. Tony

42、 didnt run so fast as Carter.,Fill in the blanks with the correct forms of the words in the box.,big much popular long old high,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 _. Its one of the most _ places for serious

43、 mountain climbers.,longest,longer,high,popular,4a,3. No ocean in the world is as _ as the Pacific Ocean. 4. Although Japan is _ than Canada, it is _ smaller.,big,older,much,太平洋,n. 大海；海洋,Example sentence: This elephant weighs many times more than this panda. (200 cm taller/shorter, weigh much more/l

44、ess, eat much more/less, eat many times more),Compare facts about these two animals. Using the language in the box to help you make sentences.,1a,New words,weigh v. 稱重,adult n. 成人 adj. 成年的,bamboo n. 竹子,endangered adj. 瀕危的,research n.&v. 調(diào)查；研究,keeper n. 飼養(yǎng)員,awake adj. 醒著,excitement n. 激動(dòng),illness n. 疾

45、病,artwork n. 插圖,wild adj. 野生的,government n. 政府,1b,Listen and check () the numbers you hear.,_100 _16 _20 _50 _120 _0.1 _0.2 _ 150,1c,Listen again and complete the sentences.,1. At birth, a baby panda is about _ to _ kilos. 2. At birth, a baby panda is about _ cm long. 3. A baby panda is not black. I

46、t is _ and it has no _. 4. A panda can live up to _ to _ years.,0.1,0.2,15,pink,teeth,20,30,Language points,An adult panda weighs many times more than a baby panda. weigh是動(dòng)詞，意為“有.重；重”，用作及物動(dòng)詞時(shí),接名詞、代詞作賓語?？捎糜诒粍?dòng)結(jié)構(gòu)。weigh也可表示某物重達(dá)多少,接表示數(shù)量的名詞性狀語。,如：The first man-made satellite of our country weighs 173 kilo

47、grammes. 我國第一顆人造衛(wèi)星重173公斤。 The doctor weighed the baby every month. 醫(yī)生每個(gè)月都給這個(gè)嬰兒稱體重。,Language points,weight做名詞，意為 “重量,分量”,也可指“重的特性”“重力”,是不可數(shù)名詞,引申可表示“負(fù)荷,負(fù)擔(dān)”,作此解時(shí)通常只用于單數(shù)形式；也可作“重量單位”或“不同分量”解,是可數(shù)名詞,也可用作不可數(shù)名詞；還可作“秤砣,砝碼”“重物”解,是可數(shù)名詞。weight還可表示“重要性、嚴(yán)重性或影響力(的程度)”,是不可數(shù)名詞。,2a,Talk about pandas in your class. Use

48、 these words to help you.,big bamboo zoo popular cute black and white Sichuan famous endangered beautiful forest protect,2b,Scan the article to find out what these numbers mean: 10, 12, 200, 2,000.,10- Adult pandas eat 10 kilos of bamboo daily. 12- Adult pandas spend more than 12 hours a day eating.

49、 200- About 200 pandas live in zoos or research centers in China or other countries. 2000- Scientists say there are fewer than 2000 pandas living in the forests.,Language points,1. At 9:00 a.m.,they find that most of the babies are already awake and hungry. awake是形容詞，意為“醒著的”。 如：Give him the letter a

50、s soon as hes awake. 他一醒就把這封信給他。 The wide awake patients heard the strange sound. 那些十分清醒的病人聽到這奇怪的聲音。,Language points,2. When the babies see the keepers,they run over to them with excitement and some of the young pandas even walk into their friends and fall over! excitement是名詞，意為“激動(dòng)；興奮”。 如：His eyes w

51、ere wild with excitement. 他眼中流露出極度興奮的神情。 He has a weak heart, and should avoid excitement. 他心臟衰弱,應(yīng)當(dāng)避免激動(dòng)。,3. The babies often die from illnesses and do not live very long. (1)die from是動(dòng)詞詞組，意為“死于， 因而死?！?。 如：In big cities during cold winter months, many old people die from the polluted air. 在大城市里，在寒冷的冬季

52、，許多老年人死于污染的空氣。 Many villagers die every year from snake bites. 每年都有許多村民死因被蛇咬而死亡。,Language points,Language points,(2)illness是可數(shù)名詞，意為“疾??；病”，其復(fù)數(shù)形式是illnesses。 如：Fever is a symptom of many illnesses. 發(fā)燒是許多疾病的癥兆。 That doctor specializes in childrens illnesses. 那位醫(yī)生專門研究兒科疾病。,Language points,4. Adult pandas

53、 spend more than 12 hours a day eating about 10 kilos of bamboo. (1)adult是形容詞，意為“成年的；成年人”。 如：We should do our best to develop the adult education. 我們應(yīng)當(dāng)努力發(fā)展成人教育。 Arent you adult enough to know that there are two sides to every issue? 長這么大了,你難道還不懂每一件事都有兩面性嗎?,Language points,(2)bamboo是不可數(shù)名詞，意為“竹子；竹”， 特

54、指“某些竹子”或強(qiáng)調(diào)種類時(shí)可數(shù)；表示“竹材”時(shí)不可數(shù)；表示“竹竿；竹棍”時(shí)可數(shù)；可用于其他名詞前作定語。 如：Bamboos are widely grown in southern parts of our country. 竹子在我國南部種植很廣。 Bamboo is not a tree, but a kind of grass. 竹不是一種樹，而是一種草。,2c,Scan the article again and write short answers to the questions.,1. What is Lin Weis job? 2. What do the baby pan

55、das eat for breakfast? 3. What do adult pandas eat?,Lin Wei is a panda keeper.,Baby pandas drink milk for breakfast.,Adult pandas eat bamboo.,4. Why are pandas endangered? 5. What is one way of saving pandas?,Pandas are endangered because humans started cutting down bamboo forests, causing pandas to

56、 have fewer places to live (in) and less food to eat.,One way is to plant more bamboo trees so there will be more forests for pandas to live in.,2d,Complete the sentences using words and phrases from the passage.,1. The panda _ at the Chengdu Research Base are awake very early in the morning to _ breakfast for the baby pandas. 2. Adult pandas do not have babies very _, and some of the babies only live for a short time because of _.,keepers,prepare,often,illnesses,3. Another reason for fewer and fewer pandas is because people are cutting down _ so pandas have f