资源描述：
《英语人教版八年级下册Unit7Period 1(Section A 1a－2d).ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Unit7SectionAPeriod1(1a-2d)Whichisthehighestmountainintheworld?Whichisthelongestriverintheworld?…Doyouknowthis?464671844fourhundredandsixty-foursixhundredandseventy-oneeighthundredandforty-fourTrytoreadlargenumbers1,0001,025600,000onethousandonethousandandtwenty-fivesixhun
2、dredthousandLeading1,000,0009,600,000onemillionninemillionsixhundredthousandTrytoreadlargenumbers169,800,450millionthousandonehundredandsixty-ninemillioneighthundredthousandfourhundredandfifty0.13.144.43zeropointonethreepointonefourfourpointfourthreepoint(eightthousandeigh
3、thundredandforty-fourpointfourthree)ReadsmallnumbersQomolangmaQomolangmaisthehighestmountainintheworld.Doyouknowhowhighitis?Itis8,844.43metershigh.QomolangmaishigherthananyotherMountainintheworld.形容词比较级+thananyother+n.单数：比任何其他更…=最高级+n.单数theSaharaTheSaharaisthebiggestdesert
4、intheworld?Yes,itisabout9,600,000squarekilometersinsize.HowbigistheSahara?TheSaharaisasbigasChina.theCaspianSeaTheCaspianSeaisthedeepestsaltlakeintheworld.the形容词最高级+of/in+比较范围：在某范围内最…Itis1,025metersdeep.TheCaspianSeaisthedeepestofallthesaltlakes.HowdeepistheCaspianSea?theN
5、ileTheNileisthelongestriverintheworld.It’smorethan6,600kilometerslong.HowlongistheNile?theYangtzeRiverTheYangtzeRiveristhethirdlongestriverintheworld,andthefirstlongestAsianriver.HowlongandhowwideistheYangtze?It’s6,300kilometerslongand3,219kilometerswide.the序数词+最高级+n.单数：第几
6、大(长…)Thesecondlongestriver intheworld-Doyouknowitsname?-ItistheAmazonRiver.-Doyouknowhowlongitis?-It’sabout6,500kilometerslong.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。Attention…meters(kilometers,centimeters,millimeterskilos)…high(long,wide,deep,heavy…)…米(千米,厘米，毫米，斤…)高(
7、长，宽，深,重…)翻译句子1.这张桌子两米长，一米宽。2.这座山有1500米高。3.他高1.8米。4.她重110斤。5.这个湖有多深？1025米深。Thetableistwometerslongandonemeterwide.Themountainis1,500metershigh.Heis1.8meterstall.Sheis110jinheavy.Howdeepisthelake?It’s1,o25metersdeep.Practice1aMatchthefactsyouknow.PlacesFacts(ninemillionsixhu
8、ndredthousand)(onethousandandtwenty-five)(sixthousandsixhundredandseventy-one)(eightthous
