2023学年完整公开课版unit7 Section A 3

Period3SectionA3(Grammarfocus—4c)Grammarfocus—What’sthehighestmountainintheworld?—Qomolangma.—HowhighisQomolangma?—It’s8,metershigh.It’shigherthananyothermountain.—Whichisthedeepestsaltlakeintheworld?—TheCaspianSeaisthedeepestofallthesaltlakes.—DidyouknowthatChinaisoneoftheoldestcountriesintheworld?—Yes,Idid.It’smucholderthantheUS.Step1Grammar形容词和副词比较级和最高级变化规则规则变化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等。2)以e结尾的词，比较级＋r，最高级＋st即可。如：nice－nicer－nicestcute－cuter－cutestlarge－larger－largest3)以辅音字母＋y结尾的变y为i＋er或est。如:easy－easier－easiesthappy－happier－happiest再如：early,busy,heavy,dirty,lazy也如此。少数单音节词也是这样，如：

pleased－morepleased－themostpleasedtired－moretired－themosttired2.不规则变化：

good—better—bestwell—better—bestbad－worse－worstmany/much—more—mostfar—farther—farthest(距离远)far—further—furthest(程度深)old—elder—eldest(长幼)old—older—oldest(年龄)Step2中考链接比较级考点①比较级修饰问题

alittle,abit,even,still,much,alot,far等可修饰比较级。.TomisalittletallerthanJim.

Thisbookismuchmoreinterestingthanthatone.②同级比较.TheweatherinBeijingiscolderthanthatinXi’an.

Ourschoolisbiggerthanyours.③the+比较级.Lucyisthefatterofthetwogirls.④“a/an+比较级”表示“又一，再一”.Lilyhasadoll,butshewantsabiggerone.⑤隐性比较（没有than的情况）.Whorunsfaster,LucyorLily?

You’dbettercomeearliernexttime.

Heworkedhardlastterm,butheworksevenharderthisterm.⑥越来越......比较级+and+比较级b.the+比较级+句子，the+比较级+句子.It’sgettingcolderandcolder.

Themoreyouexercise,thebetteryouare.2.最高级考点说明：形容词的最高级前必须加the;副词的最高级前省略the。①范围问题.Tomisthetalleststudentintheclass.

Springisthebestseasonoftheyear.②“......之一”问题.Beijingisoneofthebiggestcitiesintheworld.③“the+序数词+最高级”.Ithinkheisthesecondtallestboyinhisclass.3.比较级和最高级的转换.Tomisthetalleststudentintheclass.

=Tomistallerthananyotherstudentintheclass.

=Tomistallerthanalltheotherstudentsintheclass.

=NootherstudentsaretallerthanTom.2.同级比较①as+adj./adv.+as

.SheisasthinasLily.

HewritesascarefullyasLinda.

②not+as/so+adj./adv.+as

.Tonydidn'trunsofastasCarterStep3WritingWritefivequestionsusingcomparisons.ThenaskyourpartneryourquestionsStep4Fillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhigh1.TheAmazonRiverisoneofthe_______riversintheworld.It’salittle_______thantheYangtzeRiver.2.Qomolangmais8,meters_____.It’soneofthemost________placesforseriousmountainclimbers.3.Nooceanintheworldisas_____asthePacificOcean.4.AlthoughJapanis_______thanCanada,itis_______smaller.Step5Writetwocomparisonsabouttwotopics.Writetruefacts..Tworivers:theYangtzeRiverandtheAmazonRiverTheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeRiveristhelongestriverinChina.Twocities:___________and___________1._______________________________________________________________.2._______________________________________________________________.Twoanimals:___________and___________1.______________________________________________________________.2.___________________________