英语人教版八年级下册Unit 7 .pptx

Unit7Whatsthehightestmountainintheworld?Period1(SectionA1a-1c)Whatsthehighestmountainintheworld?,花园镇西中九年制学校尹华文,Canyouguesswhereitis?,theGreatWall,Itsthelongestwallintheworld.Itsabout8,850kilometerslong.,letstravalaroundtheworld?,Qomolangma,theNile,theCaspianSea,theSahara,Qomalangmaisthehightestmountainintheworld.Its8,844.43metershigh.,eightthousandeighthundredandforty-fourpointfourthree,TheNileisthelongestriverintheworld.Itis6,671kilometerslong.,sixthousandsixhundredandseventy-one,TheCaspianSeaisthedeepestseaofallthesaltlakes.Itis1,025metersdeep.,onethousandandtwenty-five,TheSaharaisthelargestdesertintheworld.Itisabout9,600,000squarekilometersinsize.,ninemillionsixhundredthousand,Matchthefactsyouknow.,Explanation,最高级用法：对三者或三者以上的人或物进行比较时，用最高级。形容词最高级前面要加定冠词the.副词最高级前可加the,也可以省略the.后面可带of/in短语来说明比较范围。,基本句型：1.主语+系动词+the+形容词最高级+of/in短语。Sheistheyoungestofall.2.主语+实意动词+(the)+最高级+of/in短语。Lindadraws(the)mostcarefullyinherclass.,用所给单词的适当形式填空。,1.Heis_(tall)boyinourclass.2.Qomolangmais_(high)mountainintheworld.3.Sheis_(old)womanofus.4.Whichdoyoulike_(well)apples,orangesorbananas?5.YaoMingisoneof_(good)basketballplayersinNBA.,thetallest,thehighest,theoldest,best,thebest,Explanation,数字的读法:1.读数字时，百位和十位之间用and连接。十位和个位之间用连词符号“”。eg：121:onehundredandtwenty-one2.千以上的数字，从右至左，每三位用逗号隔开。读时，从右至左依次在逗号处添上thousand(千)，million(百万),billion(十亿)。eg:8,888,888,888:eightbillioneighthundredandeighty-eightmillioneighthundredandeighty-eightthousandeighthundredandeighty-eight,6,3005,0005,4643004,231,672,8,844metershigh.8,844米高metershigh(long,wide)米高（长，宽)。英语表示“有多长（宽，高）”时，一般将数词和数量单位放在表示长宽高的形容词前作状语。e.g.Thewallis1.7metreswide.,Explanation,Listenandcompletethesentences.,Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertintheworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.,higher,thebiggest,thedeepest,thelongest,Whatisthelongestriverintheworld?,TheNile.,Usetheinformationin1btomakeconversations.,Whatis_desertintheworld?,TheSahara.,the,biggest,Whatis_intheworld?,Qomolangma,thehighestmountain,_of