新概念英语青少版-2b-Unit-24(课堂)课件.ppt（纯ppt,可能不含音视频素材）

1、1A quiz2Lesson 47New words and expressions:quiz n.问答比赛，小测试try out(on)v.+adv.particle(transitive)(+prep.+object)试一试than conj.(comparison)比continent n.大陆，洲low adj.低的population density compound n.人口密度trick question compound n.陷阱问题(看似容易其实困难的问题)square mile compound n.平方英里obviously adv.(viewpoint)(manner)

2、明显的answer n.回答，答复3Lesson 47quize.g.We will have a quiz tomorrow morning.examination正式的“考试”，如期末考试、入学考试等。exam 是examination的缩写，常用于口语，多为学生使用。test为“小考”quiz 为“测验”,特指事先无准备，随时进行的测验，也可指（广播节目中的）一般知识测验、问答比赛、猜谜等4Lesson 47try out(on)e.g.We can try it out on this mouse.try on 试穿(衣服等)；试戴；试用try n.have a try v.try t

3、o do sth.try doing sth.try ones best to do sth.5Lesson 47thane.g.Tom is taller than Tim.6Lesson 47 continente.g.Australia is a large continent.There are seven continents in the world.7Lesson 47low e.g.I find a low-fat yoghurt.low income a low voice8Lesson 47population density 人口密度 eg.The density of

4、population in this city is very high.W h i c h c o n t i n e n t h a s l o w population density?9Lesson 47populationThe world population is increasing faster and faster.About seventy percent of the population in China are farmers.India has a large population.Singapore has a small population.What is

5、the population of Canada?10Lesson 47trick questiontrickThese children loved playing tricks on their teacher.He played some clever magic tricks.11Lesson 47square mile e.g.The area of China is 9,600,000 square miles.12Lesson 47obviously obvious adj.e.g.Obviously,she needs help.It isnt obvious,is it?It

6、 isnt obvious,is it?13Lesson 47answer n.eg.Do you know the answer to this question?Do you answer the question?v.14Lesson 47Listen to the recording,and answer this question:How many people are there to the square mile in Australia?15Lesson 471.I want to try it out.Can I try it out on you,please?want

7、to do sth 想要做某事try it out 试一试try out on+宾语（you）在.身上试一试16Lesson 472.Which is the highest mountain in the British Isles?当把某人或某物与同类别的一个以上的人或物相比较时，我们使用最高级the highest mountain(the uniquely high mountain 唯一的高的山)in+单数可数名词/不可数名词（表全部的范围）British Isles-地理名词，包括不列颠、爱尔兰和马恩岛在内的政治实体17Lesson 473.the Nile/the Amazon-

8、河流、大海、大洋的专有名词前用定冠词，这些专有名词中的river,sea和ocean可以省略 如：the(River)Thames,the Mediterranean(Sea),the Pacific(Ocean)18Lesson 474.I looked it up yesterday.look up-查阅/找5.Theyre both long rivers.both=not only one,but also the other(不止这一个，而且另一个不止这一个，而且另一个)，分配词，修饰，分配词，修饰（双）主语。（双）主语。“两者都两者都.”放在放在be和助动词后面，主要动词前面和助动

9、词后面，主要动词前面6.It isnt obvious,is it?No,its a good question.否定形式的陈述句否定形式的陈述句+肯定形式的反意疑问句，期望得到肯定的回肯定形式的反意疑问句，期望得到肯定的回答。答。19Lesson 477.Australias a continent,and it has only six people to the square mile.不定冠词a表示类别表示比例的介词全部用to e.g.1:2-one to twothe square mile-定冠词强调整体中具代表性的一部分.20Lesson 48New words and expr

10、essionsIn fact adv.(viewpoint)(focus)实际上competition n.比赛brave adj.勇敢的uncle n.叔叔，伯父untidy adj.不整洁的person n.人21Grammar-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直接加直接加-er,-est.tall taller talleststrong long 以以e结尾加结尾加-r,-stbrave braver bravestnicelarge辅音字母辅音字母+y结尾，结尾，yi加加-er,-est pretty prettier prettiestuntidydirty

11、happy22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词变形词变形重读闭音节，且只有一个辅音字母结尾时，双写最后一辅音字母加重读闭音节，且只有一个辅音字母结尾时，双写最后一辅音字母加-er,-esthot hotter hottestbig thin red wetfatsad23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词变形词变形多音节在词前直接加more/mostexciting more exciting most excitinginterestingfriendlyexcited24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词变形词变形少

12、数不规则变化少数不规则变化many/much more mostlittle less leastgood/well better bestbad/badly/ill worse worstold older/elder oldest/eldestfar farther/further farthest/furthest25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比较级：用于两者之间进行比较.动词+比较级+than.(.比.更.).the+比较级+of the two (两者中，比较.的那个)e.g.Tom is taller than Jim.Tom is the talle

13、r of the two.最高级：表示三者或三者以上的比较，意为“最”句中常带有表示比较范围的介词in或ofe.g.Yao Ming is the tallest of the players.注：形容词最高级前必须加thee.g.Tom is the tallest in his class.26练习练习()1.I found he looked _ than last time when I went to see him.A.better B.well C.good D.bad()2.Which is _,the Nile or the Amazon?The Nile.A.long B.

14、longer C.longest D.the longer()3.It is said that it is _ today than yesterday.Shall we go swimming this afternoon?A.the hottest B.hot C.hottest D.hotter 27Pattern practice1.A:Bobs a tall boy.B:Yes,but Johns taller than Bob.28Pattern practice2.A:Bob,John and Dan are all tall.B:Yes,but Dans the talles

15、t of the three.29Pattern practice3.A:Whos taller-Bob or John?/Which is hotter-June or July?B:Oh,Johns the taller of the two./Oh,July is the hotter of the two.30Pattern practice4.(Not with pictures R and S)A:Whos the tallest boy in our class?B:Dan is.Dans the tallest.31Pattern practice5.A:Johns taller than Bob.B:Youre right.But Dans taller than John.In fact,Dans the tallest boy in our class.32Lesson 4833Homework测试卷