第七单元第四课时

Unit7What’sthehighestmountainintheworld?主备课人：陈淑佳共同备课人：王自海马佳马月花马丽娜课题：What’sthehighestmountainintheworld?第4课时课题Unit7SectionA(GrammarFocus-4c)授课类型语法课课标依据理解附录“语法项目表”中所列语法项目并能在特定语境合作使用;了解常用语言形式的基本结构和常用表意功能;在实际运用中体会和领悟语言形式的表意功能。教学目标知识与技能1.掌握本单元重点词汇及能用比较级和最高级谈论各之最。2能听懂和谈论有关地理和自然的话题。过程与方法通过朗读和理解本课小对话，抓住关键语法点，总结并运用语法规则。情感态度与价值观培养学生热爱大自然，保护环境的意识。教学重点难点教学重点1掌握本课时单词及短语。2最高级表达方式。教学难点1形容词和副词的比较级和最高级变化规则和用法。2物体之间的对比。教学过程设计师生活动设计意图二次备课Step1ReadandtranslatethesentencesingrammarfocusStep2Grammar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)Step3语法规则比较级考点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,butshewants

abiggerone.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'trunsofastasCarterStep4Writing(activity4c)Writefivequestionsusingcomparisons.ThenaskyourpartneryourquestionsStep5Fillintheblankswiththecorrectformsofthewordsinthebox.bigmuchpopularlongoldhigh1.TheAmazonRiverisoneofthe_______riversintheworld.It’salittle_______thantheYangtzeRiver.2.Qomolangmais8,meters_____.It’soneofthemost________placesforseriousmountainclimbers.3.Nooceanintheworldisas_____asthePacificOcean.4.AlthoughJapanis_______thanCanada,itis_______smaller.Step6Writetwocomparisonsabouttwotopics.Writetruefacts..Tworivers:theYangtzeRiverandtheAmazonRiverTheYangtzeRiverisalmostaslongastheAmazonRiver.TheAmazonislongerthantheYangtze,buttheYangtzeRiveristhelongestriverinChina.Twocities:___________and______________________________________________________________2.______________________________________________________Twoanimals:___________and___________1.______________________________________________________2.Step7homework：1.Tomemorizethei