+Unit+7+Section+A+Grammar+Focus-4c+ 人教版八年级英语下册.pptx

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1、Unit 7Whats the highest mountain in the world?Section AGrammar focusoceanthe Pacific Oceann.大海；海洋大海；海洋n.太平洋太平洋Words ReviewCan you translate the following sentences?长江大约长长江大约长6,300千米。千米。The Yangtze River is about 6,300 kilometers long.Can you translate the following sentences?黄河长黄河长5,464千米。千米。The Yel

2、low River is 5,464 kilometers long.Can you translate the following sentences?明朝的长城大约有明朝的长城大约有8,850千米长。千米长。The Ming Great Wall is about 8,850 kilometers long.Can you translate the following sentences?珠穆朗玛峰高珠穆朗玛峰高8,844.43米，米，所以攀登起来很危险。所以攀登起来很危险。Qomolangma is 8,844.43 meters high and so is very dangero

3、us to climb.Whats the highest mountain in the world?世界上最高的山是什么？世界上最高的山是什么？Qomolangma.珠穆拉玛峰珠穆拉玛峰 How high is Qomolangma?珠穆拉玛峰有多高？Its 8,844.43 meters high.Its higher than any other mountain.它有它有8844.43米高，它比其他的任何的山都要高。米高，它比其他的任何的山都要高。Which is the deepest salt lake in the world?世界上最深的咸水湖是哪个？世界上最深的咸水湖是哪个

4、？The Caspian Sea is the deepest of all the salt lakes.里海是最深的咸水湖。里海是最深的咸水湖。Did you know that China is one of the oldest countries in the world?你知道中国是世界上最古老的国家之一吗？Yes,I did.Its much older than the US.是的，我知道。中国比美国要古老的许多。是的，我知道。中国比美国要古老的许多。长度、宽度、高度、深度的表示法长度、宽度、高度、深度的表示法老虎路有老虎路有200米长，而且湿度很重。米长，而且湿度很重。Tig

5、er Path is 200 meters long and has a high humidity.这座山大概两千米高。这座山大概两千米高。The mountain is about two thousand meters high.那面镜子有两米长。那面镜子有两米长。The mirror is two meters long.*长度、宽度、高度、深度的表示法，长度、宽度、高度、深度的表示法，有一个专门的结构：有一个专门的结构：“基数词基数词+单位词单位词+形容词形容词”2.除了以上的表示方法，有时也可用除了以上的表示方法，有时也可用“基数词基数词+单位词单位词+in+长宽高深度等的名词长宽

6、高深度等的名词”来表示。来表示。in length 长度长度 in width 宽度宽度 in height 高度高度 in depth 深度深度若表示若表示重量重量，可以用，可以用 in weightNow try to translate the sentences below:1.那个篮球运动员有两米高。那个篮球运动员有两米高。2.那条河只有两米深那条河只有两米深/宽。宽。3.这棵树有两米高。这棵树有两米高。4.那条河长约两千米。那条河长约两千米。The basketball player is two meters tall.The river is only two meters d

7、eep/wide.The tree is two meters tall.The river is about two kilometers long.5.这座山大约有两千米高。这座山大约有两千米高。6.这个箱子大约有两米高这个箱子大约有两米高/宽宽/长。长。The mountain is about two thousand meters high.The box is about two meters high/wide/long.这个箱子重这个箱子重9公斤。公斤。The box is 9 kilos.=The box is 9 kilos in weight.那座桥有三米高。那座桥有三米

8、高。The bridge is 3 meters in height.教室有教室有25英尺长，英尺长，20英尺宽。英尺宽。PractiseThe classroom was 25 feet in length and 20 feet in width.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

9、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 funniest in his class.他是他们班最有趣的。他是他们班最有趣的。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单音节或双音节的形容词词/副词比较级副词比较级er，最高级最高级est。如。如:clever clevere

10、r cleverest few fewer fewest small smaller smallest 等。等。2)以以e结尾的词结尾的词，比较级比较级r，最高级最高级st 即可。即可。如：如：nice nicer nicest cute cuter cutest large larger largest 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 如如:easy easier easiest happy happier happiest 再如：再如：early,busy,heavy,dirty,lazy 也如此。也如此。4)重读闭音节，单辅音结尾的，重读闭音节，单辅音结

11、尾的，双写这双写这个辅音字母个辅音字母er 或或 est的词：的词：fat fatter fattest thin thinner thinnest hot hotter hottest red redder reddest wet wetter wettest big bigger biggest 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。如：。如：beautiful more beautiful the most beautiful 又如又如:delicious,popular

12、,important,interesting,expensive,creative双音节双音节的词如的词如: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，如：也是这样，如：pleased more pleased the most pleased tired more tired the most tired b)不规则变化：不规则变化：good better best well better best bad worse worst many/much more

13、 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)1.三者或三者以上相比，表示最高程度三者或三者以上相比，表示最高程度时，用时，用“the+最高级最高级”的结构表示。的结构表示。这种句式一般常有表示比较范围的介这种句式一般常有表示比较范围的介词短语。例如：词短语。例如：Zhang Hua is the tallest of the three.He works(the)hardest in his class.2.最高级可被最

14、高级可被序数词序数词以及以及 much，by far，nearly，almost，by no means，not quite，not really，nothing like 等词语所等词语所修饰。例如：修饰。例如：This hat is by farmuchnearlyalmostnot nearlyby no meansnot quitenothing like the biggest.How much did the second most expensive hat coat?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 other+名

15、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”相互转换相互转换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“越来越越来越”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，就越就越”The more you pr

16、actice,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.另另:比较级前可用比较级前可用much,a little,a lot,even等修饰，等修饰，表强调，如：表强调，如：The girl sang even worse th

17、is time than usual.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”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.Fill in the blanks with the correct forms of the words in the box.4abig much popular long ol

18、d high1.The Amazon River is one of the _ rivers 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.longestlongerhighpopular3.No ocean in the world is as _ as the Pacific Ocean.4.Although Japan is _ than Cana

19、da,it is _ 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

20、史等面积、人口、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

21、 is 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1.Jack是他们班最高的男生。是他们班最高的男生。Jack _ boy _ his

22、 class.2.我现在感觉比昨天好多了。我现在感觉比昨天好多了。I _ much _ than yesterday.3.北京最好的季节是哪个？北京最好的季节是哪个？我觉得是秋天。我觉得是秋天。I.Put the following sentences into English.is the tallest infeel betterWhich is the best season in Beijing?I think its autumn.1.Does China develop _(fast)of all the countries in the world?2.My brother Ji

23、mmy writes _ _(careful)in his class.3.Which shirt do you like _(good),the white one or the blue one?4.Tom finishes his work _ (quick)than Jim.1.Does China develop _(fast)of all the countries in the world?2.My brother Jimmy writes _ _(careful)in his class.3.Which shirt do you like _(good),the white o

24、ne or the blue one?4.Tom finishes his work _ (quick)than Jim.fastestthe mostbettermore quicklycarefullyII.用括号内所给单词的适当形式填空。用括号内所给单词的适当形式填空。5.How was your math exam,Nancy?I think I did it well,although it was _(difficult)than the last one.6.Id like to know if Linda is the second _(tall)girl in her cla

25、ss.7.Did you have a wonderful time at the party?Yes,its the _ (exciting)one Ive ever been to.more difficulttallestmost exciting8.Now computers are very popular and they are much _(cheap)than before.9.Look at that model ship.Oh,it looks like a real one.Its just a little _(small)than the real one.cheapersmaller