人教版八年级下英语Unit7-课件.pptx

1、Unit 7 Whats the highest mountain in the world?吸入吸入 take in 随便（做某事）随便（做某事）feel free 即使即使 even though 面对（问题等面对（问题等）in the face of 太平太平 the Pacific 出生时出生时 at birth 大约大约 or so 到达到达 up to Phrase 放弃做放弃做 give up doing 据我所知据我所知 as far as I know 撞上撞上 walk into 跑上跑上前去前去 run over 摔倒摔倒 fall over 实现梦想实现梦想*2 ach

2、ieve ones dream make ones dream come true Phrase Whats the highest mountain in the world?Qomolangma.How high is Qomolangma?Its 8844.43 meters high.Its higher than any other mountain.SentenceWhich is the deepest salt lake in the world?The Caspian Sea is the deepest of all the salt lakes.Did you know

3、that China is one of the oldest countries in the world?Yes,I did.Its much older than the US.SentenceFill in the blanks with the correct forms of the words in the box.1.The Amazon River is one of the longest rivers in the world.Its a little longer than the Yangtze River.2.Qomolangma is 8844.43 meters

4、 high .Its one of the most popular places for serious mountain climbers.big much popular long old highPracticeFill in the blanks with the correct forms of the words in the box.3.No ocean in the world is as big as the Pacific Ocean.4.Although Japan is older than Canada,it is much smaller.big much pop

5、ular long old highPracticeComparatives/Superlatives（一）概念 比较级是将二者进行比较产生的词形，是由形容词或副词原级转化而来。相对二者的比较，还有三者及以上的比较，这时就产生了最高级。Grammar Focus（二）（二）adj./adv.变化规则变化规则1.单音节形容词和部分双音节词（大多是以单音节形容词和部分双音节词（大多是以y、ly、er、ow、ble结结尾的双音节形容词），一般在词尾加尾的双音节形容词），一般在词尾加-er或或-est。e.g.tall-taller-tallest short-shorter-shortest 2.以

6、一个元音加一个辅音结尾的词，且元音发短音时，双写尾字以一个元音加一个辅音结尾的词，且元音发短音时，双写尾字母，再加母，再加-er或或-est。e.g.fat-fatter-fattestGrammar Focus3.以以“辅音字母辅音字母+y”结尾的词，变结尾的词，变“y”为为“i”，再加，再加-er或或-est。e.g.happy-happier-happiest4.多音节词（三音节及以上）和部分双音节词，在词前加多音节词（三音节及以上）和部分双音节词，在词前加more或或most。5.部分形容词和副词的比较级是不规则的。部分形容词和副词的比较级是不规则的。e.g.good/well-bet

7、ter-best bad/badly-worse-worstGrammar Focus（三）用法（三）用法Comparatives1.基本句型：基本句型：A+系动词（系动词（be/taste/feel/look）+比较级比较级+than+B e.g.She is yonger than me.You look younger today.Grammar Focus2.修饰比较级：可以用修饰比较级：可以用much，a lot，even,a little等来修饰，表示等来修饰，表示“的多的多”，“甚至甚至”，“更更”e.g.Our city is much more beautiful than

8、yours.This is even harder than steel.Japan is a little larger than Germany.3.表示倍数：表示倍数：times+比较级比较级+than e.g.Our room is twice larger than theirs.Grammar Focus4.表示年龄、身高的比较：表示数、量的词表示年龄、身高的比较：表示数、量的词+比较级比较级+than e.g.Im two years older than you.5.比较级比较级+than any other+单数名词单数名词 表示表示“比其他的任何比其他的任何都都”（用比较级

9、形式表达最高级的意思）（用比较级形式表达最高级的意思）e.g.He is better than any other student in the class.（暗指他在班级里是最好的）Grammar Focus6.比较级比较级+and+比较级比较级 表示表示“越来越越来越”e.g.The earth is getting warmer and warmer.7.the+比较级比较级，the+比较级比较级 表示表示“越越就越就越”e.g.The busier he is,the happier he feels.8.the+比较级比较级+of the two 表示表示“两个中比较两个中比较的的

10、”。e.g.This watch is the cheaper of the two.Grammar FocusSuperlatives基本句型：基本句型：A+系动词（系动词（be/taste/feel/look）+the+最高级最高级 e.g.He is the tallest(boy)in his classGrammar Focus（四）同义句转换（四）同义句转换1.用反义表同义用反义表同义比较顺序颠倒主语宾语交换，用反义比较级 e.g.He is older than me.=I am younger than him.Grammar Focus（四）同义句转换（四）同义句转换2.mo

11、re/less转换转换比较顺序颠倒主语宾语交换 e.g.Dancing is more interesting than singing.=Singing is less interesting than dancing.Grammar Focus（四）同义句转换（四）同义句转换3.not as+比较级原形比较级原形+as反义表同义:比较顺序颠倒主语宾语交换，用反义比较级as+adj./adv.+as 和一样;not as+adj./adv.+as 和不一样;e.g.She is clever than her brother.=Her brother is not as clever as

12、her.Grammar Focus（四）同义句转换（四）同义句转换4.比较级与最高级的转换比较级与最高级的转换than any other+单数名词/the other+复数名词：用比较级形式表达最高级的意思 e.g.He is the tallest student in the class.=He is taller than any other student in the class.=He is taller than the other students in the class.Grammar FocusComplete the chart.PracticeAdjectiveCo

13、mparativesSuperlativeshighhigherhighestdangerousmore dangerousmost dangerouslonglongerlongestpopularmore popularmost popular1.Tom is 12 years old.Tim is 14 years old.(同义句转换)Tom is two years younger than Tim.Tim is two years younger than Tom.Practice2.Jeff is more serious than most kids.(同义句转换)Most k

14、ids are less serious than Jeff.Most kids arent as serious as Jeff.Practice3.Larry works harder than Huang Lei.(同义句转换)Huang Lei doesnt work as hard as Larry.Practice4.This apple is red.That apple is red,too.(同义句转换)This apple has the same color as that one.Practice5.Bill ran faster than Jack.(同义句转换)Jack doesnt run as fast as Bill.PracticeThanks for watching!