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1、Unit 7 Whats the highest mountain in the world?Section A GF-4cWhats the highest mountain in the world?Qomolangma.How high is Qomolangma?Its 8,848.86 meters high.Its higher than any other mountain.Grammar FocusWhich is the deepest salt lake in the world?The Caspian Sea is the deepest of all the salt
2、lakes.Did you know that China is one of the oldest countries in the world?Yes,I did.Its much older than the US.1.Mike is the tallest student in our class.2.Mike is taller than any other student in our class.3.Mike is taller than the other students in our class.4.No student in our class is as tall as
3、 Mike.5.Mike is much taller than.6.is almost as tall as Mike.He is one of the tallest students in our class.Comparison-Superlative一、形容词、副词的比较级和最高级一、形容词、副词的比较级和最高级u概述：概述：英语中的形容词和副词英语中的形容词和副词常用三种形式来表常用三种形式来表达事物的等级差别达事物的等级差别，即，即原级、比较级原级、比较级和和最高级最高级。比较级比较级主要用于主要用于两者之间两者之间作比较作比较。最高级最高级主要用于主要用于三者或三者以上三者或三
4、者以上进行比较。进行比较。u规则变化规则变化直接直接加加-er 或或-esttall_ long_以以不发音的字母不发音的字母e结尾的单词直接结尾的单词直接加加-r 或或-st以以“辅音字母辅音字母+y”结尾结尾，把把y变为变为i，再加再加-er 或或-estnice_heavy_tallertallestlongerlongestnicernicestheavierheaviest重读闭音节重读闭音节（末尾只有一个辅音字母末尾只有一个辅音字母）双写辅音字母双写辅音字母再加再加-er或或-est部分双音节词和多音节词部分双音节词和多音节词 分别在原级前加分别在原级前加more构成比较级和构成比
5、较级和most构成最高级构成最高级 big_slowly_beautiful_biggerbiggestmore slowlymost slowlymore beautifulmost beautiful原级原级比较级比较级最高级最高级good/wellbetterbestbadworseworstmany/muchmoremostlittlelessleastoldolder/elderoldest/eldestfarfarther(更远更远)/further(进一步的进一步的)farthest/furthestu不规则变化不规则变化Self CheckAdjectivesComparati
6、vesSuperlativeshighdangerouslongpopular1 Complete the chart.higher more dangerouslongermore popularhighestmost dangerouslongestmost popular（1）在形容词最高级前通常用）在形容词最高级前通常用the，在副词最高，在副词最高 级前可用级前可用the，也可省略。，也可省略。（2）比较级前常用的修饰语有）比较级前常用的修饰语有 far，even，a lot，a bit，much等。等。u使用比较等级应注意的几点：使用比较等级应注意的几点：不可用不可用very修饰修
7、饰3 Circle the correct word and/or fill in the blank with the correct from of the word in brackets for each sentence.1.An elephant weighs(few/many)times more than a dog.2.An adult panda can eat(much/a little)more than a cat.3.Canada is a(little/lot)less _ (crowded)than China.4.A tiger is(much/a littl
8、e)_ (strong)than a man.crowdedstronger4aFill 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 8,848.86 meters _.Its one of the most _ places for seri
9、ous mountain climbers.3.No ocean in the world is as _ as the Pacific Ocean.4.Although Japan is _ than Canada,it is_ smaller.longestlongerhighpopularbigoldermuch4bWrite two comparisons about two topics.Write true facts.Two rivers:_ and _the Yangtze Riverthe Amazon River*The Amazon is longer than the
10、Yangtze,but the Yangtze is the longest river in China.*The Yangtze River is almost as long as the Amazon River.Two cities:_ and _1._.2._ _.Beijing ShanghaiBeijing has fewer population than Shanghai.Beijing is much bigger than Shanghai.Beijing isalmost 3 times as big as ShanghaiBeijing*has a populati
11、on of 21,729,000*an area of 16,410 kmShanghai*has a population of 24,197,000*an area of 6,340 kmTwo animals:_ and _1._.2._ _.an elephantAn elephant is a lot taller than a panda.An elephant weighs much more than a panda,and eats morea pandaElephant*is 350 cm tall*weighs 5,000 kilos*eats 150 kilos of
12、food a dayPanda*is 150 cm tall*weighs 100 kilos*eats 10 kilos of food a dayPractice 1.Flat A is more expensive than Flat B.Flat B is than Flat A.Flat B is Flat A.Flat B is not Flat A.2.I prefer maths to English.I like maths English.3.He is the tallest student in the class.He is in the class.He is in
13、 the class.less expensivecheaper thanas expensive asbetter thantaller than any other studenttaller than the other students4cWrite five questions using comparisons.Then ask your partner your questions.1.A:?（Qomolangma)B:Its 8,844.43 meters high.2.A:?(highest mountain/world)B:Qomolangma is the highest
14、 mountain.3.A:?(deepest salt lake/world)B:The Caspian Sea is the deepest salt lake.How high is QomolangmaWhat is the highest mountain in the worldWhat is the deepest salt lake in the world4cWrite five questions using comparisons.Then ask your partner your questions.1.A:?(longest river/Asia)B:The Yangtze River is the longest river.2.A:?(biggest ocean/world)B:The Pacific Ocean is the biggest ocean.What is the longest river in AsiaWhat is the biggest ocean in the world