人教版八年級(jí)下冊(cè)Unit 7 SectionA grammar focus -4c(共35張PPT)2

Unit 7 Whats the highest mountain in the world?Section AGrammar Focus -4cTo learn to use comparatives and superlatives with adjectives and adverbsTo learn new words: the Pacific OceanTeaching goalsCan you introduce Qomolangma the Most Dangerous Mountain in the world?QomolangmaFactsAchievementsSpiritsDescription: 1)danger: _ 2)popularity:_Location:_Height:_Weather:_1953:_1960:_1975:_the worlds most dangerousthe most popular place forsouthwestern part of China8844.43 metersthick clouds、snow hard、freezing weatherthe first people to reachthe first Chinese team.the first woman to chanllenge themselvesnever give upbe stronger than natureReason:_Spirit:_Can you translate the following sentences?長(zhǎng)江大約長(zhǎng)長(zhǎng)江大約長(zhǎng)6,300千米。千米。The Yangtze River is about 6,300 kilometers long.Can you translate the following sentences?黃河長(zhǎng)黃河長(zhǎng)5,464千米。千米。The Yellow River is 5,464 kilometers long.Can you translate the following sentences?明朝的長(zhǎng)城大約有明朝的長(zhǎng)城大約有8,850千千米長(zhǎng)。米長(zhǎng)。The Great Wall in Ming dynasty is about 8,850 kilometers long.Can you translate the following sentences?珠穆朗瑪峰高珠穆朗瑪峰高8,844.43米，米，所以攀登起來(lái)很危險(xiǎn)。所以攀登起來(lái)很危險(xiǎn)。Qomolangma is 8,844.43 meters high and so is very dangerous to climb.Grammar Focus1. 朗讀“語(yǔ)法聚焦”中的問(wèn)句和答語(yǔ)，讀一讀含“數(shù)字”的短語(yǔ)。2.觀察并總結(jié)： 8,844.43 meters high，1,025 meters deep， 6,671 kilometers long，這些都是用： + + (long, high, wide, deep)構(gòu)成的3.練一練：（1）2500米深 ，（2）35千米寬 .基數(shù)詞 量詞 長(zhǎng)/高/寬/深2500 meters deep35 kilometers wideGrammar 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 that China is one of the oldest countries in the world?Yes, I did. Its much older than the US.Discussing：1. 比較級(jí) 最高級(jí)的構(gòu)成.2. 比較級(jí)的用法及注意事項(xiàng)。3. 最高級(jí)的用法。Discussing：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)。形容詞和副詞比較級(jí) 最高級(jí)的構(gòu)成 1.1.構(gòu)成的規(guī)則變化: : (1)(1)詞前 (2) (2)詞尾 2. 2.構(gòu)成的不規(guī)則變化: : 1. 形容詞、副詞比較級(jí)和最高規(guī)則變化和不規(guī)則變化。 a)規(guī)則變化 1) 一般情況下，單音節(jié)或雙音節(jié)的形容詞（或副詞）比較級(jí)er ， 最高級(jí)est 如： clevercleverercleverest fewfewerfewest smallsmallersmallest等。 2) 以e結(jié)尾的詞，比較級(jí)r，最高級(jí)st 即可。 如：nicenicernicest cutecutercutest largelargerlargest 3) 以輔音字母y結(jié)尾的變y為ier或est 如: easyeasiereasiest happyhappierhappiest 再如：early , busy , heavy , dirty , lazy也如此。 4) 元音+輔音（重讀）雙寫(xiě)er 或 est1. fatfatterfattest 2. thinthinnerthinnest 3. hothotterhottest 4. redredderreddest 5. wetwetterwettest 6. bigbiggerbiggest 5) 多音節(jié)和部分雙音節(jié)的詞more構(gòu)成比較級(jí)，the most構(gòu)成最高級(jí)。如： beautiful more beautiful the most beautiful 又如: delicious, popular, important, interesting, expensive, creative雙音節(jié)的詞如: careful more careful the most careful useful more useful the most usefulb) 不規(guī)則變化： good better best well better best badworse worst many, much more most far farther farthest (距離遠(yuǎn)) far further furthest (程度深) c)“one of + the + 形容詞的最高級(jí) + 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。1. good 2. comfortable 3. big 4. happy 5. cheap 6. many 7. difficult 8. little better best more comfortable most comfortable bigger biggest happier happiest cheaper cheapest more most more difficult most difficult less least 1. 同級(jí)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 didnt run so fast as Carter. 形容詞和副詞比較等級(jí)的用法 2.形容詞和副詞比較級(jí)的用法 1.Who runs faster, he or she?2.He runs faster than she.3.He runs much faster than she.4.He becomes healthier and healthier.5.The more you exercise, the healthier you will be.6.She is less healthy than he.1.表示兩者之間的選擇, 可用“Which/Who + 比較，or?”.3.much/far/a lot, even ,still ,a little/a bit 修飾比較級(jí),表示程度.Who runs faster, he or she?He runs faster than she.He runs much faster than she.4. “比較級(jí)+and+比較級(jí)”表示“越來(lái)越”5. “the+比較級(jí) , the + 比較級(jí)”表示“ 越, 越 ” 6. 表示不及另一方時(shí)，用“l(fā)ess+原級(jí)+than” (雙音節(jié)和多音節(jié)詞)He becomes healthier and healthier.The more you exercise, the healthier you will be.She is less healthy than he.He is healthier than she.Shanghai is becoming more and more modern.1.比較級(jí) + and +比較級(jí) 越來(lái)越2.the+比較級(jí) , the + 比較級(jí) 越, 越 3._you are, _mistakes you will make. (你越仔細(xì)，做錯(cuò)的題目就越少） 4. _you eat, _youll be.(你吃得越多,就越胖)5. Alice writes well. Mary writes _ than she. (甚至更好）The more carefulthe fewerThe morethe fatter1.The girl becomes _. (越來(lái)越漂亮）more and more beautiful2. The weather is getting _. (越來(lái)越槽糕）worse and worseeven / still better1.表示三者或三者以上比較,可用”Which/Who +最高級(jí),or ?”表示.2. 最高級(jí)+of/among (同類比較) in (范圍比較)4.one of +形容詞最高級(jí) +名詞復(fù)數(shù)表示“最 之一”3. 序數(shù)詞修飾最高級(jí)3. 形容詞和副詞的最高級(jí)的用法Who is the tallest, Tom , Mike , or Jack?Tom is the tallest of the three.Mike is the second tallest student in our class.Jack is one of the tallest students in our class.Tom runs (the) fastest in our class. 1.Hainan is a very large Island .It is the second _ island in china. (large)2.busycarefulhappy6.I think Yao Ming is one of _ basketball players in NBA. (hot)busythe most carefulfartherhappierlargestthe hottest完成句子Fill in the blanks with the correct forms of the words in the box.big much popular long old high1. 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 mountain climbers.longestlongerhighpopular4a3. No ocean in the world is as _ as the Pacific Ocean.4. Although Japan is _ than Canada, it is _ smaller.bigoldermuch太平洋n. 大海；海洋e.g. Two rivers：_ and _4b. Write two comparisons about two topics. Write 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 animals: _ and _1. _2. _Monkey DogA dog is bigger than a monkey.A monkey is smaller than a dog, but it climbs a tree faster than a dog.Two cities: _and _1. _2. _Singapore Kuala Lumpur(吉隆坡）Kuala Lumpur is as modern as Singapore.Singapore is bigger than Kuala Lumpur and has a larger population than Kuala Lumpur.4c. Write five questions using comparisons. Then ask your 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? 1. Failure is the mother of _. A .success B .succeed C .successful 2. Of all the students, Angie is the _but studies _than others. A .shorter, best B .shortest, better C .shortest, best 3. As students, we must work hard to make our country _. A .rich and stronger B .richer and strong C .richer and stronger 4. John often talks _ but does _, so all of us think he is a good boy. A .few, fast B .less, more C. more, less 5. The boy didnt run _ to catch the bus. A .fast enough B .enough fast C .quick enough 6. About one third of the population of the country _ farmers. A .is B .are C .wereThe population of China _ _ than that of Canada. _ is the population of my hometown? 7. I dont think this question is _than that one .It is _of these questions. A. easier, more difficult B .easier, the most difficult C. easiest, more difficult 8. Mr. Zhang is one of _in our school A .the more popular teachers B .most popular teachers C .the most popular teachers 9. He is always the first student _ (come) and the last _ (leave) in my class.10. Tom succeeded in _ (reach) the top of the mountain.Fill in the blanks with the correct forms of the words in the box.big much popular long old high1. 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 mountain climbers.longestlongerhighpopular4a3. No ocean in the world is as _ as the Pacific Ocean.4. Although Japan is _ than Canada, it is _ smaller.bigoldermuch太平洋n. 大海；海洋Homework Try to write as many sentences as you can using comparisons. (10 sentences at least)