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1、Unit 7Whats the highest mountain in the world?Section APeriod 31 Revision Revision What have you learnt in the last period? Lets review something important?1 Presentation Now lets review the comparative and superlative together.!形容词和副词的比较级和最高级形容词和副词的比较级和最高级1. 大多数形容词和副词都有三个级大多数形容词和副词都有三个级1) 原级原级: 常用结
2、构常用结构as.as. “和和.一样一样” Zhang Hong is as tall as Tom. 张红和汤姆一样高。张红和汤姆一样高。 2) 比较级比较级 (用于用于两者之间的比较两者之间的比较)常用结构：常用结构：比较级比较级than . He is taller than I. 他比我高。他比我高。 Grammar 3) 最高级最高级(用于用于三者或三者以上的比较三者或三者以上的比较)，常用结构常用结构: the + 最高级最高级of / in . He is the tallest of the three. 他是这三个人中最高的。他是这三个人中最高的。 He is the fun
3、niest in his class. 他是他们班最有趣的。他是他们班最有趣的。 2. 形容词、副词比较级和最高级的构成形容词、副词比较级和最高级的构成a) 规则变化规则变化1) 一般情况下，一般情况下，单音节或双音节的形容词单音节或双音节的形容词（或（或副词副词）比较级比较级er ， 最高级最高级est clevercleverercleverest fewfewerfewest smallsmallersmallest等等2) 以以e结尾的词，比较级结尾的词，比较级r，最高级最高级st 即可即可nicenicernicest cutecutercutest largelargerlarge
4、st 3) 以以辅音字母辅音字母y结尾的结尾的变变y为为ier或或est easyeasiereasiest happyhappierhappiest early , busy , heavy , dirty , lazy也如此也如此4) 以一个辅音字母结尾的重读闭音节，双以一个辅音字母结尾的重读闭音节，双写辅音字母写辅音字母er 或或 est的词的词1. fatfatterfattest 2. thinthinnerthinnest 3. hothotterhottest 4. redredderreddest 5. wetwetterwettest 6. bigbiggerbiggest
5、5) 多音节和部分双音节的词多音节和部分双音节的词需要在形容词需要在形容词原级前原级前more构成构成比较级比较级，the most构构成成最高级最高级beautiful more beautiful the most beautiful delicious, popular, important, interesting, expensive, creative双音节双音节的词的词careful more careful the most careful useful more useful the most useful少数单音节词少数单音节词也是这样也是这样pleased more pl
6、eased the most pleased tiredmore tired the most tired b) 不规则变化：不规则变化： good better best well better best badworse worst many, much more most far farther farthest (距离远距离远) far further furthest (程度深程度深) old elder eldest (长幼长幼) old older oldest (年龄年龄)形容词和副词比较等级的常用结构形容词和副词比较等级的常用结构1. “比较级比较级+ than any ot
7、her +名词名词+其他其他”表示表示“比其他任何一个比其他任何一个都都”该结构可与该结构可与“the+最高级最高级+其他其他”相互转相互转换换The bag is cheaper than any other bag in the store.=The bag is the cheapest in the store.2. “比较级比较级 + and + 比较级比较级”表示表示“越来越来越越” The earth is getting warmer and warmer. 地球变得越来越暖和。地球变得越来越暖和。3. “the + 比较级比较级, the + 比较级比较级”表示表示“越越，
8、就越就越”The more you practice, the better youll play the piano.4. “the + 比较级比较级 + of the two”表示表示“两者两者之中更之中更的那一个的那一个” Susan is the taller of the two girls.5. “数词数词 + times + 比较级比较级 + than”表示表示“是是的几倍的几倍”The elephant weighs ten times morethan the panda.6. “one of the + 形容词最高级形容词最高级 + 复数复数名词名词”意为意为“最最之一之一
9、”It is one of best theaters in our town.7. “the + 序数词序数词 + 最高级最高级 + 单数名词单数名词 + in ”表示表示“是是中的第几中的第几”The Yellow River is the second longestriver in China.2 Practice Fill in the blanks with the correct forms of the words in the box.4abig much popular long old high1.The Amazon River is one of the _ rive
10、rs in the world. Its a little _ than the Yangtze River.2.Qomolangma is 8,848.43 meters _. Its one of the most _ places for serious mountain climbers.longestlongerhighpopularbig much popular long old high3. No ocean in the world is as _ as the Pacific Ocean.4. Although Japan is _ than Canada, it is _
11、 smaller.bigoldermuchWrite two comparisons about two topics. Write true facts.4bTwo cities: Singapore and Kuala Lumpur(吉隆坡吉隆坡)1.Kuala Lumpur is as modern as Singapore.2.Singapore is bigger than Kuala Lumpur and has a larger population than Kuala Lumpur.For example:策略：可以比较城市的策略：可以比较城市的面积、人口、历史等面积、人口、
12、历史等Two animals: Monkey and Dog1. A dog is bigger than a monkey.2. A monkey is smaller than a dog, but it climbs a tree faster than a dog.策略：可以比较动物的身高策略：可以比较动物的身高(身身长长)、体重、奔跑速度、外貌特、体重、奔跑速度、外貌特征以及寿命等征以及寿命等Pair work4cWrite five questions using comparisons. Then ask your partner your questions.1.What is
13、 the highest building in our city?2.What is the largest shopping mall in our city?3.Which is the biggest park in our city?4.Which is the longest road in our city?5.Whats the biggest city in China? .注意：在使用比较级或注意：在使用比较级或最高级时要有相对明确最高级时要有相对明确的比较范围或参照物的比较范围或参照物3 SummaryLets learn what we have learnt today!Homework1. Review the new words and expressions. 2. Preview the new words of section B
