2020 2021學(xué)年人教版英語八年級下冊 Unit7 SectionA 1a 1c課件

Unit7SectionAPeriod1(1a-1c)Unit7SectionA一般情況下加-er或－est:tall-taller-tallestsmall-smaller-smallest2.以字母e結(jié)尾的形容詞，加-r或-stnice–nicer-nicestsafe–safer-safest4.以“輔音字母＋y”結(jié)尾的雙音節(jié)詞，先改“y”為“i”，再加-er或-est.early-earlier-earliest形容詞副詞比較級最高級規(guī)則3.重讀閉音節(jié)詞只有一個(gè)輔音字母時(shí)，應(yīng)先雙寫輔音字母,再加-er或-est.big—bigger-biggest

fat—fatter-fattestReview一般情況下加-er或－est:2.以字母e結(jié)尾的形容詞5.部分雙音節(jié)詞或多音節(jié)詞前面加more,most.如:interestingmoreinterestingmostinterestingfamousmorefamousmostfamous不規(guī)則變化原級比較級最高級good/wellbetterbestbad/illworseworstmany/muchmoremostlittlelessleastfarfartherfarthestoldolderelderoldesteldest兩好、兩壞、兩多、一少、一遠(yuǎn)、一老.5.部分雙音節(jié)詞或多音節(jié)詞前面加more,most.如:不知識點(diǎn)梳理（形容詞比較級用法）（1）“The+比較級…，the+比較級”表示“越……，越……”（2）在比較級前面使用的修飾詞有：

even（更，更加），alittle（有點(diǎn)），

far/much/alot（更加，……的多）（3）表示倍數(shù)時(shí)用:…times+比較級+than…（4）as…as(與…一樣），notas（so)…as（與…不一樣）中間用原級。知識點(diǎn)梳理（形容詞比較級用法）知識點(diǎn)梳理（形容詞最高級用法）（1）最高級的句式中一般帶有表示比較范圍的介詞短語，比如:inourclass,ofthethree等（2）表示“最……之一”的句式，要用oneofthe+形容詞最高級+復(fù)數(shù)名詞。

（3）句型：Which/Who…+比較級，AorB?Which/Who…+最高級，A，BorC?知識點(diǎn)梳理（形容詞最高級用法）（1）最高級的句式中一般帶有表Whichisthehighestmountainintheworld?Whichisthelongestriverintheworld?…DoyoulikeGeography?

Doyouknowthis?WhichisthehighestmountainQomolangma

Qomolangma

runsalongtheborderbetweenChinaandNepal.Itiscoveredwithsnowalltheyearround.It’s8844.43metershigh,thehighestintheworld.It’s26kilometerslong.QomolangmaQomolangmaruntheSahara

TheSaharaisthebiggestdesertintheworld.ItislocatedinthenorthernAfrica.Itsclimateconditionsareverybadandisoneoftheearth'smostunsuitableforbiologicalsurvival.

theSaharaTheSaharaistheCaspianSeaTheCaspianSea(里海)isthebiggestinland

lakeintheworld.Themaxdepthis1,025m(inthesouthernpart).ItliesintheborderbetweenAsiaandEurope.theCaspianSeaTheCaspiatheNileTheNile

isthelongestriverintheworld.It’smorethan6,600kilometerslong.Itrunsthrough9countries.It’soneofthelargestriverflowingthroughtheinternationalstatesintheworldandrunsintotheMediterraneanSea(地中海)intheend.

theNileTheNileisthelotheYangtzeRiver

TheYangtzeRiveristhethirdlongestriverintheworld,andthefirstAsianriver.It’s6211.31kilometerslong.TheYangtzeRiverBasin,east-westwidthof3,219kilometers,about966kilometerswidenorth-south,passingthrough11provinces.ItrunsintotheEastSeainShanghaifinally.theYangtzeRiverTheYaCanyoureadthesenumbers?8844.43metershigh1,025metersdeep6,600kilometerslong3,219kilometerswide(“小數(shù)點(diǎn)”讀作“point”)Canyoureadthesenumbers?88410,001thousandonekeyTenthousandandone千位數(shù)的讀法10,001thousandonekeyTent1,111,111millionthousandonemilliononehundredandeleventhousandonehundredandelevenmillionthousandonemillionone數(shù)詞的解讀技巧如果在萬位以下的話只要直接讀出該數(shù)值即可。特大數(shù)字如果在萬分位以上的話，是通過三位三位的讀，來讀出數(shù)值。一般的排列順序是從大到?。篵illion（十億）,million（百萬）,thousand,hundred.這些英文的數(shù)值代表三位三位的進(jìn)位讀法，每次讀完一個(gè)單元后，就加上這些數(shù)值。數(shù)詞的解讀技巧如果在萬位以下的話只要直接讀出該數(shù)值即可。Canyoureadthem5648,8441,02523,3579,600,00075,320,612fivehundred

andsixty-foureightthousandeighthundredandforty-fourtwenty-threethousand,threehundredandfifty-sevenseven-fivemillion,threehundredandtwentythousand,sixhundredandtwelve

ninemillion,sixhundredthousandonethousandandtwenty-fiveCanyoureadthem564fivehund1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh1aMatchthefactsyouknow.Qom…8,844.43metershigh.…8,844米高注：英語表示“有多長(寬，高，深…)”時(shí)，其結(jié)構(gòu)為“數(shù)詞+單位名詞+形容詞(high,long,wide,deep…)”或“數(shù)詞+單位名詞+in+名詞（height,length,width,depth）（數(shù)詞＞1時(shí)名詞變復(fù)數(shù)）Thewallis1.7metershigh.=Thewallis1.7metersinheight.Explanation…8,844.43metershigh.A:

HowhighisQomolangma?B:It’s8,844.43metershigh.PracticeHowlongistheNile?It’s6,671kilometerslong.How

bigistheSahara?It’sabout9,600,000squarekilometersin

size.A:HowhighisQomolangma?Prac1bListenandcompletethesentences.1.Qomolangmais_________thananyothermountainintheworld.2.TheSaharais__________desertintheworld.3.TheCaspianSeais___________ofallthesaltlakes.4.TheNileis_________riverintheworld.higherthebiggestthedeepestthelongest1bListenandcompletethesentUsetheinformationin1btomakeconversations.1cA:Whatisthehighestmountainintheworld?B:Qomolangma.Usetheinformationin1btomPracticeinpairslikethis:A:Whatisthe…inthe…?B:…A:How…isit?B:It’s…PracticePracticeinpairslikethis:PrWhatisthelongestriverintheworld?TheNile.Howlongisit?It’s6,671kilometerslong.WhatisthelongestriverintWhoknows“themost”most?(誰知道的“最”最多？)compete比一比Samples

：Russiaisthebiggestcountryintheworld.ThePacificOceanisthelargestocean.Heisthetallestboysofall.Whoknows“themost”most?co1.物體“長寬高深”表示法

…metersdeep,…meterslong,…metershigh,…meterswide2.用形容詞最高級描述世界之最。

summary1.物體“長寬高深”表示法summaryDotheotherexercisesinthispart.DotheotherexercisesinthisUnit7SectionAPeriod1(1a-1c)Unit7SectionA一般情況下加-er或－est:tall-taller-tallestsmall-smaller-smallest2.以字母e結(jié)尾的形容詞，加-r或-stnice–nicer-nicestsafe–safer-safest4.以“輔音字母＋y”結(jié)尾的雙音節(jié)詞，先改“y”為“i”，再加-er或-est.early-earlier-earliest形容詞副詞比較級最高級規(guī)則3.重讀閉音節(jié)詞只有一個(gè)輔音字母時(shí)，應(yīng)先雙寫輔音字母,再加-er或-est.big—bigger-biggest

fat—fatter-fattestReview一般情況下加-er或－est:2.以字母e結(jié)尾的形容詞5.部分雙音節(jié)詞或多音節(jié)詞前面加more,most.如:interestingmoreinterestingmostinterestingfamousmorefamousmostfamous不規(guī)則變化原級比較級最高級good/wellbetterbestbad/illworseworstmany/muchmoremostlittlelessleastfarfartherfarthestoldolderelderoldesteldest兩好、兩壞、兩多、一少、一遠(yuǎn)、一老.5.部分雙音節(jié)詞或多音節(jié)詞前面加more,most.如:不知識點(diǎn)梳理（形容詞比較級用法）（1）“The+比較級…，the+比較級”表示“越……，越……”（2）在比較級前面使用的修飾詞有：

even（更，更加），alittle（有點(diǎn)），

far/much/alot（更加，……的多）（3）表示倍數(shù)時(shí)用:…times+比較級+than…（4）as…as(與…一樣），notas（so)…as（與…不一樣）中間用原級。知識點(diǎn)梳理（形容詞比較級用法）知識點(diǎn)梳理（形容詞最高級用法）（1）最高級的句式中一般帶有表示比較范圍的介詞短語，比如:inourclass,ofthethree等（2）表示“最……之一”的句式，要用oneofthe+形容詞最高級+復(fù)數(shù)名詞。

（3）句型：Which/Who…+比較級，AorB?Which/Who…+最高級，A，BorC?知識點(diǎn)梳理（形容詞最高級用法）（1）最高級的句式中一般帶有表Whichisthehighestmountainintheworld?Whichisthelongestriverintheworld?…DoyoulikeGeography?

Doyouknowthis?WhichisthehighestmountainQomolangma

Qomolangma

runsalongtheborderbetweenChinaandNepal.Itiscoveredwithsnowalltheyearround.It’s8844.43metershigh,thehighestintheworld.It’s26kilometerslong.QomolangmaQomolangmaruntheSahara

TheSaharaisthebiggestdesertintheworld.ItislocatedinthenorthernAfrica.Itsclimateconditionsareverybadandisoneoftheearth'smostunsuitableforbiologicalsurvival.

theSaharaTheSaharaistheCaspianSeaTheCaspianSea(里海)isthebiggestinland

lakeintheworld.Themaxdepthis1,025m(inthesouthernpart).ItliesintheborderbetweenAsiaandEurope.theCaspianSeaTheCaspiatheNileTheNile

isthelongestriverintheworld.It’smorethan6,600kilometerslong.Itrunsthrough9countries.It’soneofthelargestriverflowingthroughtheinternationalstatesintheworldandrunsintotheMediterraneanSea(地中海)intheend.

theNileTheNileisthelotheYangtzeRiver

TheYangtzeRiveristhethirdlongestriverintheworld,andthefirstAsianriver.It’s6211.31kilometerslong.TheYangtzeRiverBasin,east-westwidthof3,219kilometers,about966kilometerswidenorth-south,passingthrough11provinces.ItrunsintotheEastSeainShanghaifinally.theYangtzeRiverTheYaCanyoureadthesenumbers?8844.43metershigh1,025metersdeep6,600kilometerslong3,219kilometerswide(“小數(shù)點(diǎn)”讀作“point”)Canyoureadthesenumbers?88410,001thousandonekeyTenthousandandone千位數(shù)的讀法10,001thousandonekeyTent1,111,111millionthousandonemilliononehundredandeleventhousandonehundredandelevenmillionthousandonemillionone數(shù)詞的解讀技巧如果在萬位以下的話只要直接讀出該數(shù)值即可。特大數(shù)字如果在萬分位以上的話，是通過三位三位的讀，來讀出數(shù)值。一般的排列順序是從大到?。篵illion（十億）,million（百萬）,thousand,hundred.這些英文的數(shù)值代表三位三位的進(jìn)位讀法，每次讀完一個(gè)單元后，就加上這些數(shù)值。數(shù)詞的解讀技巧如果在萬位以下的話只要直接讀出該數(shù)值即可。Canyoureadthem5648,8441,02523,3579,600,00075,320,612fivehundred

andsixty-foureightthousandeighthundredandforty-fourtwenty-threethousand,threehundredandfifty-sevenseven-fivemillion,threehundredandtwentythousand,sixhundredandtwelve

ninemillion,sixhundredthousandonethousandandtwenty-fiveCanyoureadthem564fivehund1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh1aMatchthefactsyouknow.Qom…8,844.43metershigh.…8,844米高注：英語表示“有多長(寬，高，深…)”時(shí)，其結(jié)構(gòu)為“數(shù)詞+單位名詞+形容詞(high,long,wide,deep…)”或“數(shù)詞+單位名詞+in+名詞（height,length,width,depth）（數(shù)詞＞1時(shí)名詞變復(fù)數(shù)）Thewallis1.7metershigh.=Thewallis1.7metersinheight.Explanation…8,844.43metershigh.A:

HowhighisQomolangma?B:It’s8,844.43metershigh.PracticeHowlongistheNile?It’s6,671kilometerslong.How

bigistheSahara?It’sabout9,600,000squarekilometersin

size.A:HowhighisQomolangma?Prac1bListenandcomplet