八年级下7单元

Unit7What sthehighestmountainintheworld 形容词的最高级意为 最高的 Qomolangmaisthehighestmountainintheworld 珠穆朗玛 形容词副词比较级和最高级有规则变化和不规则变化 规则变化 1 一般情况下 单音节或双音节的形容词 或副词 比较级 er 最高级 est如 clever cleverer cleverestfew fewer fewestsmall smaller smallest 2 以e结尾的词 比较级 r 最高级 st如 nice nicer nicestcute cuter cutestlarge larger largest 3 以辅音字母 y结尾的变y为i er或est如 easy easier easiesthappy happier happiestearly earlier earliestbusy busier busiestheavy heavier heaviestdirty dirtier dirtiestlazy lazier laziest 4 双写最后一个辅音字母 er或estfat fatter fattestthin thinner thinnesthot hotter hottestred redder reddestwet wetter wettestbig bigger biggest 5 多音节和部分双音节的词需要在形容词原级前 more构成比较级 themost构成最高级 如 beautiful morebeautiful themostbeautiful delicious popular important interesting expensive双音节的词如careful morecareful themostcarefuluseful moreuseful themostuseful 不规则变化 形容词 副词比较级 最高级不规则表good well better bestbad badly worse worstlittle less leastold older 年龄 elder 辈分 theelderly 老人 oldest eldestmany much more mostfar farther further farthest 表距离 furthest 表程度 Late later latter 后者 latest 用于时间 表示 最新的 最近的 形容词副词比较级最高级的特殊用法 1 than的句型 比较级 than 比较对象Theboyistallerthanthatone 2 比较级之前用the特指两个中的更 的一个Theolderboyofthetwoboysismybrother 3 As 原级 as和 一样notso as as和 不一样Sheisastallashermother Idon trunsofastasmybrother 4 比较级 and 比较级 多音节词用moreandmore 原级表示越来越 Itgetshotterandhotter Thegirlisgettingmoreandmorebeautiful 5 who which be 比较级 AorB Whoisfatter TomorJohn 6the加比较级 the加比较级 表示 越 就越 Theolderyouare themoreyouwillknowaboutit7 在比较级前用much alot even still far alittle等程度副词用来加强语气Todayisalittlecolderthanyesterday 8 oneof 最高级 复数名词 表示最 之一TheYellowRiverisoneofthelongestriversinChina 9 比较级 than anyother 单数名词 有other强调在同一范围之内 Heisheavierthananyotherstudentinhisclass Heistheheavieststudentinhisclass 形容词 副词 原级 比较级和最高级 练习 I 用适当形式填空 1 Bobis young thanFredbut tall thanFred 2 YingTianisnotas tall asYongXian 3 Almostallthestudents facesarethesamebutLiDeminglooks fat thanbeforetheholidays 4 Whichis heavy ahenorachicken 5 How tall isSally She s1 55meters tall WhataboutXiaoling She sonly1 40meters tall Sheismuch short thanSally Sheisalsothe short girlintheclass 6 Heis bad atlearningmath Heismuch bad atChineseandheisthe bad atEnglish yonger taller tall fatter heavier tall high high shorter shortest bad worse worst 7 AnniesaysSallyisthe kind personintheworld 8 Heisoneofthe friendly peopleintheclass Ithink 9 Adictionaryismuch expensive thanastory book 10 Anorangeisalittle big thananapple butmuch small thanawatermelon 11 TheChangjiangRiveristhe long riverinChina 12 Sueisalittle beautiful thanhersister 13 Myroomisnotas big asmybrother s 14 Howdifficultisphysics I mnotsure Isit difficult thanmath Idon tthinkso 15 Annieplaysthepianovery well Sueplaysit well thanAnnie AndSallyplaysitthe well kindest Mostfriendly moreexpensive bigger smaller longest morebeautiful big moredifficult well better best 基数词 1 从1 10one two three four five six seven eight nine ten 2 从11 19eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen 这里除eleven twelve thirteen fifteen eighteen为特殊形式外 fourteen sixteen seventeen nineteen都是由其个位数形式后添加后缀 teen构成 3 从21 99整数几十中除twenty thirty forty fifty eighty为特殊形式外 sixty seventy ninety都是其个位数形式后添加后缀 ty构成 表示几十几时 在几十和个位基数词形式之间添加连字符 如 21twenty one76seventy six 4 百位数个数基数词形式加 hundred 表示几百 在几十几与百位间加上and 101ahundredandone320threehundredandtwenty648sixhundredandforty eight 5 千位数以上 每三位数加一个逗号 从右开始 第一个 前的数字后添加thousand 第二个 前面的数字后添加million 第三个 前的数字后添加billion 两个逗号之间最大的数为百位数形式 2 648twothousandsixhundredandforty eight5 237 166 234fivebillion twohundredandthirty sevenmillion onehundredandsixty sixthousand twohundredandthirty four 6 基数词在表示确切的数字时 不能使用百 千 百万 十亿的复数形式 但是 当基数词表示不确切数字 如成百 成千上万 三三两两时 基数词则以复数形式出现 Therearehundredsofpeopleinthehall大厅里有数以百计的人 Thousandsandthousandsofpeoplecometovisitthemuseumeveryday每天有成千上万的人来参观博物馆 有时两个复数形式的基数词连用可写hundredsofthousandsof tensofhundredsof等等 Theywenttothetheatreintwosandthrees 他们三三两两地来到了剧院 7 表示人的不确切岁数或年代 用几十的复数形式表示 Hebecameaprofessorinhisthirties 他三十多岁时成为了教授 Itwasinthe1960s 那是在二十世纪六十年代 Presentation squaren 平方 metern 米 deepadj 深的 desertn 沙漠 populationn 人口 Asian 亚洲 tourv n 旅行 touristn 旅行者 walln 墙 amazingadj 令人大为惊奇的 ancientadj 古代的 wideadj 宽的 宽阔和 Doyouknowtheseinterestplaces Qomolangma QomolangmarunsalongtheborderbetweenChinaandNepal Itiscoveredwithsnowalltheyearround It s8844 43high thehighestintheworld It s26kilometerslong TheNileisthelongestriverintheworld It smorethan6600kilometerslong Itrunsthrough9countries it soneofthelargestriverflowsthroughtheinternationalstatesintheworldandrunsintotheMediterraneanSea 地中海 intheend TheNile TheCaspianSea TheCaspianSeaisthebiggestlakeintheworld ItliesintheborderbetweenAsiaandEurope TheSaharaisthebiggestdesertintheworld ItislocatedinthenorthernAfrica climateconditionsareverybad isoneoftheearth smostnotsuitableforbiologicalsurvival TheSahara TheYangtzeRiveristhethirdlongestriverintheworld thefirstAsianrivers It s6211 31kilometerslong TheYangtzeRiverBasin east westwidthof3219kilometers about966kilometerswidenorth south passingthrough11provinces ItrunsintotheEastSeainShanghaifinally TheYangtzeRiver 中国的长城共有近一万公里 东起河北秦皇岛的山海关 西到嘉峪关 这是明代修筑长城的两个最大关口 北京境内的长城有600余公里 比较著名的有八达岭长城 金山岭长城 司马台长城 慕田峪长城 居庸关长城和箭扣长城等 TheGreatWall 1aMatchthefactsyouknow 1bListenandcompletethesentences 1 Qomolangmais thananyothermountainintheworld 2 TheSaharais desertintheworld 3 TheCaspianSeais ofallthesaltlakes 4 TheNileis riverintheworld higher thebiggest thedeepest thelongest 2aListenandnumberthefacts 1 4 intheorderyouhearthem 6 3005 0005 464300 TheYangtzeRiverisabout kilometerslongandtheYellowRiveris kilometerslong Chinahasthebiggestpopulationintheworld It salotbiggerthanthepopulationoftheUS Chinaisover yearsold IthasamuchlongerhistorythantheUS TheUSisnoteven yearsold ChinaisalmostasbigastheUS butitisthebiggestcountryinAsia 4 2 1 3 2bListenagainandfillintheblanksin2awiththenumbersinthebox 6