a lesson in a lab[上学期]

课件24张PPT。Period 5GrammarDegrees of comparisonThe tallest man and the shortest man in the worldThe Pakistani is four times as high as the Iranian.Or we can say:The Pakistani is four times higher than the Iranian.The Pakistani is four times the height of the Iranian.0.64m2.55mThe old woman is about ten times as old as her granddaughter.Or we can say:The old woman is about ten times older than her granddaughter.The old woman is about ten times the age of her granddaughter.②倍数+形容词比较级+as …③倍数+the size ( height, length, weight, width, depth, age) +of …Conclusion:Answer the questions:2.The men are about 1.7meters tall,and the truck is three and a half times as high as the men,how high is the truck? 1.What’s wrong with this sentence?Ball 2 is two times as big as ball 1.Correct:Ball 2 is twice as big as ball 1.Ball 2 is two times as big as ball 1.6M3.The canna is 10(cm) big,and the king flower is ten times bigger than the canna,how big is the king flower?1MDiscuss in groups of three. Make sentences about the comparative sizes of the pairs. Use the words in the brackets .Winter in HarbinWinter in Beijing-20℃-5℃（cold/coldness）Mount Tai Mount Qumolangma1521m8848m(high/height)Diameter (Earth=1)Jupiter=11(big/size)Example:A: The Yangtze River is about three times as long as the Songhua River.B: The Yangtze River is about three times longer than the Songhua River.C: The Yangtze River is about three times the length of the Songhua River.Mount Tai Mount Qumolangma1521m8848m(high/height)A:Mount Qumolangma is about six times as high as Mount Tai.B:Mount Qumolangma is about six times higher than Mount Tai.C:Mount Qumolangma is about six times the height of Mount Tai.Winter in HarbinWinter in Beijing-20℃-5℃（cold/coldness）A:Winter is four times as cold in Harbin as in Beijing.B: Winter is four times colder in Harbin than in
Beijing.C: Winter in Harbin is four times the coldness of
winter in Beijing.Diameter (Earth=1)Jupiter=11(big/size)A:Jupiter is eleven times as big as the earth .B:Jupiter is eleven times bigger than the earth.C:Jupiter is eleven times the size of the earth.1.It’s becoming bigger and bigger.2.She is more and more beautiful.3.The higher it flies,the smaller it appears.Answer the questions:A:Which of these structures is used to say that something is changing?B: Which of these structures is used to say that things change/are changing together?C:Which structures repeat the same adjectives/adverbs?Sentence 1.2.3Sentence 3Sentence 1.2Pair work: Look at the passage and conclude the sentences structure. In the National Day holidays, I went back to my hometown to see my uncle. He was very happy to see me and said I was growing taller and taller . I was surprised to see that my hometown was getting more and more beautiful and the farmers were richer and richer. Seeing my amazed look ,Uncle smiled and said ,“The more money you make , the more you spend.”After lunch , I decided to return. Uncle asked me to work hard. He said , “The harder you work at your lessons,the better you will do in them.” more and more+多音节形容词单音节或多音节形容词/副词的比较级+单音节或多音节形容词/副词的比较级1).“越来越……”2).“越……,越……”The +形容词/副词的比较级+主+谓, the +形容词/副词的比较级ConclusionComplete the sentences with the words in the box in suitable comparative forms.Warm healthy/long more/more more/less big Example: Air pollution is getting worse and worse.1. people are, they will live.
2. we recycle, we waste.
3.The planet is getting .
4.According to scientists, the universe is getting a .
5. you practise, fluently you will speak.
6.I found it difficult to sold the problem.The healthierthe longer The morethe lesswarmer and warmerThe morethe moremore and moreA little tallerMuch tallerAny louderPair work:Look at these sentences.Underline the comparative expressions and circle the adverbs used to give more information about the comparative expressions. 1.Come a bit closer.2.We need rather more than that.3.It weighs a little more than before.4.It’ll be a lot heavier than magnesium.5.Is it any heavier?6.We need a piece which is (very) much bigger than that. a bit rathera littlea lotany(very) much程度副词+形容词或副词的比较级.Conclusion:Pair work:Fill in the blanks, using much, a little, a lot, a bit, any…A).Tom has been ill for several days. Is he getting better?anyB).Native speakers speak English faster than I do.muchC).I weigh heavier than my cousin, but he is stronger than I am. a bita lotPair work:Underline the correct expression.Example: Math is rather/much easier than English.1.This metal is very much/a bit heavier than steel.2.Lead is a lot/lots heavier than steel.3.This chemistry experiment is rather/any complicated.4.It is a little/lots longer than before.Group work:Make as many sentences as you can,using degrees of comparison.Keywords: weight (heavy/strong),
height(tall),
age(old/young),
number(many)Group work:comment on the fixed expression in English .A.The bigger, the better.B.The higher, the fewer.C.The bigger they are, the harder they fall.Discussion1.PAGE47 Grammar 2:Activity2,4Homework2.PAGE91 Grammar:Activity1,2