新目標(biāo)人教版八年級(jí)下冊(cè)英語(yǔ)unit7全單元課件

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. 亞洲亞洲tour v. n. 旅行旅行tourist n. 旅行者旅行者wall n. 墻墻amazing adj. 令人大為驚奇的令人大為驚奇的ancient adj. 古代的古代的wide adj. 寬的；寬闊和寬的；寬闊和Language Goal:Talk about geography and nature一、用英語(yǔ)寫出下列數(shù)字：一、用英

2、語(yǔ)寫出下列數(shù)字：ninety-eight thousand seven hundred and fifty-four Nine hundred and eighty-threeExercise five hundred (and) sixty-five seven hundred and nine 565_ 709_ 983_ 98, 754_ _練一練練一練345100118,657,421three hundred and forty-fiveone thousand (and) oneeighteen million, six hundred and fifty-seven thousa

3、nd, 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 _

5、desert 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

7、bigger 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 conve

10、rsations 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 old

11、est countries 最古老的國(guó)家之一最古老的國(guó)家之一3. feel free to do sth. 隨意地做某事隨意地做某事4. as far as I know 據(jù)我所知據(jù)我所知5. man-made objects 人造物體人造物體6. the highest mountain 最高的山脈最高的山脈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

12、talking 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 y

13、ou 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

14、馬拉雅山脈喜馬拉雅山脈亞馬遜河亞馬遜河段；段落段；段落西南的；西南方向的西南的；西南方向的厚的；濃的厚的；濃的包括；包含包括；包含凍冰的；結(jié)冰的凍冰的；結(jié)冰的條件；狀況條件；狀況吸入；吞入（體內(nèi)）吸入；吞入（體內(nèi)）succeed v.Japan n.challenge v.in the face of achieve v.force n.nature n. ocean n. the Pacific Ocean實(shí)現(xiàn)目標(biāo)；成功實(shí)現(xiàn)目標(biāo)；成功日本日本挑戰(zhàn)；考驗(yàn)挑戰(zhàn)；考驗(yàn)面對(duì)（問題、困難等）面對(duì)（問題、困難等）達(dá)到；完成；成功達(dá)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；

15、海洋太平洋太平洋1、run along 跨越跨越 2. freezing weather 冰凍的天氣冰凍的天氣3. take in air 呼吸空氣呼吸空氣4. the first people to do sth. 第一個(gè)做某事的人第一個(gè)做某事的人5. in the face of difficulties 面臨危險(xiǎn)面臨危險(xiǎn)6. give up doing sth. 放棄做某事放棄做某事7. achieve ones dream 實(shí)現(xiàn)某人的夢(mèng)想實(shí)現(xiàn)某人的夢(mèng)想8. the forces of nature 自然界的力量自然界的力量9. reach the top 到達(dá)頂峰到達(dá)頂峰10. eve

16、n though 雖然雖然;盡管盡管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 southwester

17、n 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 a

18、lso 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 th

19、e 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 climbersPara

20、graph 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 th

21、e 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. Ans

22、wer the 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 pe

23、ople 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

24、的在今天的長(zhǎng)長(zhǎng)城游城游中，大中，大家盡家盡管管問我任何問我任何問問題，題，不要拘不要拘束束。 feel free是英語(yǔ)是英語(yǔ)口口語(yǔ)中一個(gè)常用表達(dá)。語(yǔ)中一個(gè)常用表達(dá)。若若有人有人讓你讓你feel free to do something,就是讓你無需拘就是讓你無需拘束，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? 我可以用一下你的衛(wèi)生間嗎？我可以用一下你的衛(wèi)生間嗎？ B: Yes, feel free.可以，請(qǐng)隨意?？梢?，請(qǐng)隨意。Language points2. As far as I know, there ar

25、e no man-made objects as big as this. 據(jù)我所知，據(jù)我所知，再?zèng)]有再?zèng)]有像它這樣像它這樣大大的人造物的人造物體體了。了。as far as I know 是一個(gè)是一個(gè)固固定的表達(dá)方式，還可以定的表達(dá)方式，還可以說說so far as I know，意思是意思是“據(jù)我所知據(jù)我所知”。例如：例如：As far as I know, Jacks got twin sisters.就我所知，杰克有一對(duì)孿生姐妹。就我所知，杰克有一對(duì)孿生姐妹。Theyre not coming today, so far as I know.他們今天不來他們今天不來了了 就我所知是這樣

26、的。就我所知是這樣的。3. the Ming Great Wall 明長(zhǎng)城明長(zhǎng)城“明長(zhǎng)城明長(zhǎng)城”是指明朝時(shí)期為了防御北方游是指明朝時(shí)期為了防御北方游牧民族的騷擾，歷時(shí)一百多年在北部地區(qū)牧民族的騷擾，歷時(shí)一百多年在北部地區(qū) 修筑的軍事防御工程。這段長(zhǎng)城東起遼寧修筑的軍事防御工程。這段長(zhǎng)城東起遼寧虎山，西至甘肅嘉峪關(guān)，從東向西橫貫多虎山，西至甘肅嘉峪關(guān)，從東向西橫貫多個(gè)省、個(gè)省、 直轄市、自治區(qū)，直轄市、自治區(qū)，全長(zhǎng)約全長(zhǎng)約8850千千米米，是現(xiàn)存歷代長(zhǎng)城遺跡中最完整、最堅(jiān)，是現(xiàn)存歷代長(zhǎng)城遺跡中最完整、最堅(jiān)固的。固的。4. Even more serious difficulties includ

27、e freezing weather conditions and heavy storms.更加嚴(yán)峻的更加嚴(yán)峻的困困難包括極冷的天氣狀況和巨大的難包括極冷的天氣狀況和巨大的風(fēng)風(fēng)暴暴。1）difficulty既可作可數(shù)名詞也可作不可數(shù)名既可作可數(shù)名詞也可作不可數(shù)名詞詞，在此用作可數(shù)名詞。，在此用作可數(shù)名詞。作可數(shù)名詞時(shí)作可數(shù)名詞時(shí), difficulty通常用作復(fù)數(shù)通常用作復(fù)數(shù)，表示具體概念，即：表示具體概念，即：各種各樣的各種各樣的“困難；難題；難事困難；難題；難事”。例如：例如：People learning a new language may face some difficultie

28、s.人們學(xué)習(xí)一門新的人們學(xué)習(xí)一門新的語(yǔ)語(yǔ)言言 時(shí)可能會(huì)遇到一些時(shí)可能會(huì)遇到一些困困難。難。If you have any difficulties, you can call me for help.如果你遇到任何困難，給我打電話求助好了。如果你遇到任何困難，給我打電話求助好了。作不可數(shù)名詞時(shí)，作不可數(shù)名詞時(shí)，difficulty可譯作可譯作“困難；艱困難；艱難；辛苦；費(fèi)勁難；辛苦；費(fèi)勁”，例如：例如：He had great difficulty in finding a new job. 他找新的他找新的 工工作費(fèi)作費(fèi)了了很大勁。很大勁。.We found the house withou

29、t difficulty. 我們輕而易舉地找到廣那座房子。我們輕而易舉地找到廣那座房子。2）include表示表示“包括；包含包括；包含”，是一個(gè)，是一個(gè)及物動(dòng)詞。及物動(dòng)詞。例如：例如：Does your price of the bike include this light?你們的車價(jià)包含這你們的車價(jià)包含這盞盞車燈嗎？車燈嗎？5. The spirit of these climbers shows us that we should never give up trying to achieve our dreams.這些這些登山者的精神向我們表明：我們絕不應(yīng)該登山者的精神向我們表明：我

30、們絕不應(yīng)該放棄實(shí)現(xiàn)自己夢(mèng)想的嘗試。放棄實(shí)現(xiàn)自己夢(mèng)想的嘗試。1）give up doing something 的意思是的意思是“放棄做放棄做某事；半途而廢某事；半途而廢”He gave up learning a third language after he got the job.他找到工作之后就放棄了對(duì)第三門語(yǔ)言的學(xué)習(xí)。他找到工作之后就放棄了對(duì)第三門語(yǔ)言的學(xué)習(xí)。2 ) achieve our dreams 相當(dāng)于相當(dāng)于make our dreams come true其中動(dòng)詞其中動(dòng)詞achieve表示表示“（通過努力）實(shí)現(xiàn)；通過努力）實(shí)現(xiàn)；取得；獲取；達(dá)到取得；獲??；達(dá)到（夢(mèng)想、成績(jī)、成

31、功、目夢(mèng)想、成績(jī)、成功、目的的)”等。等。例如：例如：He achieved great success in a short time.他用很短的時(shí)間取得了極大的成功他用很短的時(shí)間取得了極大的成功。Lin Tao achieved very good exam results.林濤考試取得林濤考試取得了了 很好的成績(jī)。很好的成績(jī)。一一 寫出下列單詞的比較級(jí)和最高級(jí)寫出下列單詞的比較級(jí)和最高級(jí)1. good2. comfortable3. big4. happy5. cheap6. many7. difficult8. little 1. good 2. comfortable 3. big

32、4. happy 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

33、二二 根據(jù)所給詞的適當(dāng)形式填空根據(jù)所給詞的適當(dāng)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.

34、 Unit 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

35、know 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_. b

36、ig much 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. Writ

37、e true 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

38、partner 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)數(shù)詞數(shù)詞 Numeral數(shù)詞是用來表示事物的數(shù)目和順序的數(shù)詞是用來表示事物的數(shù)目和

39、順序的詞。詞。數(shù)詞的分類：數(shù)詞的分類：1.基數(shù)詞基數(shù)詞2.序數(shù)詞序數(shù)詞3.分?jǐn)?shù)詞分?jǐn)?shù)詞今天我們先來學(xué)習(xí)一下基數(shù)詞。今天我們先來學(xué)習(xí)一下基數(shù)詞。1. 1. 復(fù)習(xí)復(fù)習(xí)11001100以內(nèi)的所有數(shù)字。以內(nèi)的所有數(shù)字。2. 2. 掌握百、千、萬(wàn)、十萬(wàn)、百萬(wàn)的掌握百、千、萬(wàn)、十萬(wàn)、百萬(wàn)的表達(dá)法。表達(dá)法。1、1-19的基數(shù)詞 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 sevent

40、een 17 eighteen 18 nineteen 192、2090等十位數(shù)twenty 20thirty 30forty 40fifty 50sixty 60seventy 70eighty 80ninety 90 twenty-one 21 twenty-two 22 其它的十位數(shù)照此類推，如其它的十位數(shù)照此類推，如： thirty-one 31 forty-two 42 seventy-five 75 ninety-six 963、百、千、萬(wàn) 百百 hundred 100 one hundred 200 two hundred 以此類推以此類推 千千 thousand 1 000 o

41、ne thousand 2 000 two thousand英語(yǔ)里沒有英語(yǔ)里沒有“萬(wàn)萬(wàn)”這一單位，這一單位，萬(wàn)也用萬(wàn)也用thousand表示。如：表示。如：10 000 ten thousand 一萬(wàn)一萬(wàn)20 000 twenty thousand 兩萬(wàn)兩萬(wàn) 4、十萬(wàn)、百萬(wàn)十萬(wàn)的說法是：十萬(wàn)的說法是： 100.000 a (one) hundred thousand 200.000 two hundred thousand million 百萬(wàn)百萬(wàn) a (one) million 1,000,000 two million 2,000,000 以此類推以此類推 8,000,000 eight

42、million練一練練一練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 poun

43、ds is a lot of money.表示確定數(shù)量時(shí)表示確定數(shù)量時(shí) 用基數(shù)詞用基數(shù)詞+ hundred，thousand，million，billion多位基數(shù)詞讀法多位基數(shù)詞讀法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)三位數(shù)以上的數(shù)，從個(gè)位往前數(shù)，每三位數(shù)三位數(shù)以上的數(shù)，從個(gè)位往前數(shù)，每三位

44、數(shù)加一個(gè)逗號(hào)，從后往前數(shù)的第一個(gè)逗號(hào)代表加一個(gè)逗號(hào)，從后往前數(shù)的第一個(gè)逗號(hào)代表thousand, 第二個(gè)逗號(hào)代表第二個(gè)逗號(hào)代表million, 第三個(gè)逗第三個(gè)逗號(hào)是號(hào)是billion，注意，注意這幾個(gè)詞不能用復(fù)數(shù)形式，這幾個(gè)詞不能用復(fù)數(shù)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 確切數(shù)目與不確切數(shù)目的表達(dá)確切數(shù)目與不確切數(shù)目的表達(dá)：hundred, th

45、ousand, million, billion等前面有等前面有基數(shù)詞，基數(shù)詞，表示確切數(shù)目時(shí)，用單數(shù)，后直接表示確切數(shù)目時(shí)，用單數(shù)，后直接接復(fù)數(shù)名詞；接復(fù)數(shù)名詞；如：如：three hundred books one hundred people five thousand students seven million starts表示不確切數(shù)目時(shí)，這類詞后加表示不確切數(shù)目時(shí)，這類詞后加-s且與且與of連連 用。用。如：如： hundreds of people thousands of students millions of birds billions of lions注意：這類短語(yǔ)中

46、，名詞前如有定冠詞、指注意：這類短語(yǔ)中，名詞前如有定冠詞、指 示代詞或形容詞性物主代詞時(shí)，可加示代詞或形容詞性物主代詞時(shí)，可加of, 但但 表示的是范圍。如：表示的是范圍。如：two hundred of the workers工人中的二百（人）工人中的二百（人）Grammar Focus(二二)形容詞的比較級(jí)和最高級(jí)形容詞的比較級(jí)和最高級(jí) comparatives and superlatives with adj. and adv.short-shortersmall-smallernicenicersafesafer-bigthinheavyheavierhappyhappierbigb

47、iggerthinthinnerdelicious more delicious interesting more interesting important more important carefully-more carefully quickly-more quickly slowly-more slowlyeasily- more easily大多數(shù)形容詞和副詞有三個(gè)等級(jí)：大多數(shù)形容詞和副詞有三個(gè)等級(jí)：原級(jí)、比較級(jí)、最高級(jí)原級(jí)、比較級(jí)、最高級(jí)。一、一、形容詞比較級(jí)的構(gòu)成形容詞比較級(jí)的構(gòu)成 1.1.構(gòu)成的不規(guī)則變化構(gòu)成的不規(guī)則變化: : 2. 2.構(gòu)成的規(guī)則變化構(gòu)成的規(guī)則變化: :1.

48、 構(gòu)成的不規(guī)則變化構(gòu)成的不規(guī)則變化:e.g. good / well better best bad / badly worse worst many / much more most little less least far farther / further farthest/ furthest2. 構(gòu)成的規(guī)則變化構(gòu)成的規(guī)則變化:1) 單音節(jié)詞和少數(shù)雙音節(jié)詞一般在詞尾單音節(jié)詞和少數(shù)雙音節(jié)詞一般在詞尾 后加后加-er 構(gòu)成比較級(jí)構(gòu)成比較級(jí) 或或-est構(gòu)成最高級(jí)構(gòu)成最高級(jí). 如：如： 原級(jí)原級(jí) 比較級(jí)比較級(jí) 最高級(jí)最高級(jí) cold colder coldest bright brighte

49、rbrightest young younger youngest2) 以字母以字母 e 結(jié)尾的詞只加結(jié)尾的詞只加 r 或或-st 構(gòu)成構(gòu)成 比較級(jí)比較級(jí)和和最高級(jí)最高級(jí)。 原級(jí)原級(jí) 比較級(jí)比較級(jí) 最高級(jí)最高級(jí) nice nicer nicest fine finer finest large larger largest3) 重讀閉音節(jié)詞末尾只有一個(gè)輔音字母重讀閉音節(jié)詞末尾只有一個(gè)輔音字母時(shí)時(shí), 先雙寫這個(gè)輔音字母先雙寫這個(gè)輔音字母, 再加再加-er或或-est。如如: big bigger biggest thin thinner thinnest 4) 以以“輔音字母輔音字母+ y”結(jié)尾

50、的雙音節(jié)詞，結(jié)尾的雙音節(jié)詞， 先改先改y為為i, 再加再加-er或或-est。如：。如： easy easier easiest happy happier happiest5) 多音節(jié)詞和部分雙音節(jié)詞在詞前加多音節(jié)詞和部分雙音節(jié)詞在詞前加more 或或most。如：。如： delicious more delicious most delicious interesting more interesting most interesting importantmore important most importantcarefully-more carefully-most carefull

51、yquickly-more quickly -most quicklyslowly-more slowly -most slowlyeasily- more easily -most easily形容詞形容詞最高級(jí)最高級(jí)的構(gòu)成的構(gòu)成A: tall short quick thick light cool warm quiet wild calm the - esttalltallertallestB: heavy easy tidy dry busy happy healthy hungry earlyy - i- estC: large late nice- st biggestD: big

52、hothottestthin “雙寫雙寫”thinnestwet wettest fatfattestAdjective delicious dangerous interesting popular beautiful careful friendly the most - adj .Adjective better best farlittle worse worstmore mostfarther farthestless leastgoodwellbadbadlymany much 1. good 2. comfortable 3. big 4. happy 5. cheap 6. m

53、any 7. difficult 8. little better best more comfortable most comfortable bigger biggest happier happiest cheaper cheapest more most more difficult most difficult less least1.用法：英語(yǔ)中三者或三者以上相比較，表示用法：英語(yǔ)中三者或三者以上相比較，表示“最最” 這樣的最高程度概念時(shí)，要用這樣的最高程度概念時(shí)，要用 “the+最高級(jí)最高級(jí)” 的結(jié)構(gòu)表示。這種句式一般的結(jié)構(gòu)表示。這種句式一般帶有表示比較的介詞短語(yǔ)，比如帶有表示比

54、較的介詞短語(yǔ)，比如: in our class, of the three 等。等。例如：例如：Wang Lin is the tallest in our class. This theater is the cheapest of the three.注意使用最高級(jí)時(shí)應(yīng)注意以下幾點(diǎn)：注意使用最高級(jí)時(shí)應(yīng)注意以下幾點(diǎn)： 形容詞的最高級(jí)形容詞的最高級(jí) (1) 表示表示 “最最之一之一” 的句式，要用的句式，要用 one of the +形容詞最高級(jí)形容詞最高級(jí)+復(fù)數(shù)名詞。復(fù)數(shù)名詞。例如例如: Jingjiang Hotel is one of the biggest hotels in our

55、city. Lisa is not one of my best friends. (2) 當(dāng)最高級(jí)前面有物主代詞或名詞所有格時(shí)，當(dāng)最高級(jí)前面有物主代詞或名詞所有格時(shí)， 不加定冠詞不加定冠詞 the。例如：例如：Tom is Lucys best friend. Tuesday is her busiest day.(3) 最高級(jí)前可加序數(shù)詞。最高級(jí)前可加序數(shù)詞。例如：例如：The Yellow River is the second longest river in China.(4) 形容最高級(jí)修飾作表語(yǔ)或介詞賓語(yǔ)的名詞，形容最高級(jí)修飾作表語(yǔ)或介詞賓語(yǔ)的名詞，代詞時(shí)，被修飾的詞往往省略。代

56、詞時(shí)，被修飾的詞往往省略。例如：例如：He is the laziest (student) in our class.2. 形容詞比較級(jí)和最高級(jí)的構(gòu)成形容詞比較級(jí)和最高級(jí)的構(gòu)成(1) 規(guī)則變化規(guī)則變化a. 一般情況下，單音節(jié)或雙音節(jié)的形容詞比較級(jí)一般情況下，單音節(jié)或雙音節(jié)的形容詞比較級(jí)直接加直接加-er, 最高級(jí)直接加最高級(jí)直接加-est。如：。如： clevercleverercleverest cheapcheapercheapest fewfewerfewest smallsmallersmallest youngyoungeryoungest b. 以以-e 結(jié)尾的形容詞，比較級(jí)結(jié)尾

57、的形容詞，比較級(jí)+ -r,最高級(jí)最高級(jí)+ -st。如：。如： largelargerlargest nicenicernicest cutecutercutestc. 以輔音字母以輔音字母+y結(jié)尾的形容詞，變結(jié)尾的形容詞，變y為為i +er或或+est。 busybusierbusiest heavyheavierheaviest easyeasiereasiest happyhappierhappiest dirtydirtierdirtiestd. 以重讀閉音節(jié)結(jié)尾，末尾只有一個(gè)輔音字母結(jié)以重讀閉音節(jié)結(jié)尾，末尾只有一個(gè)輔音字母結(jié) 尾的詞，雙寫最后一個(gè)輔音字母，再加尾的詞，雙寫最后一個(gè)輔音字

58、母，再加+er或或 +est。 如：如： bigbiggerbiggest thinthinnerthinnest fatfatterfattest hothotterhotteste. 多音節(jié)和部分雙音節(jié)形容詞，需在原級(jí)前多音節(jié)和部分雙音節(jié)形容詞，需在原級(jí)前+more 構(gòu)成比較級(jí)，構(gòu)成比較級(jí)，+ most 構(gòu)成最高級(jí)。如：構(gòu)成最高級(jí)。如： importantmore importantmost important beautifulmore beautiful most beautiful difficultmore difficultmost difficult 3. 不規(guī)則變化：不規(guī)則變

59、化：原級(jí)原級(jí)比較級(jí)比較級(jí)最高級(jí)最高級(jí) good /well better best bad /ill worse worst little less least many /much more most far farther /further farthest /furthest old older /elder oldest /eldest最高級(jí)規(guī)則變化口訣最高級(jí)規(guī)則變化口訣：最高級(jí)，很容易，一般詞尾加最高級(jí)，很容易，一般詞尾加est。(cheap-the cheapest)詞尾若有啞音詞尾若有啞音e, 直接就加直接就加st。(close-the closest)重讀閉音節(jié)重讀閉音節(jié), 單

60、輔音字母要雙寫。單輔音字母要雙寫。(big-the biggest)輔音字母加輔音字母加y, 記得把記得把y變?yōu)樽優(yōu)閕。(friendly-the friendliest) 多音節(jié)，考考你，多音節(jié)，考考你，the most到底加哪里？到底加哪里？(popular-the most popular)1.We are going to the Green Restaurant for lunch. (就劃線部分提問就劃線部分提問) _ you going for lunch? 2. Sam is the shortest in his class. (改為同義句改為同義句)Sam is _ than _