SectionA1a—2d【学习目标】1、能够掌握本节课出现的重点短语和句子。2.谈论地理和自然现象，学会对事实和数字的比较，提高听说能力。【重点难点】识记形容词和副词比较级变法的多条规则；使用比较级来描述人的外貌。【课前热身】写出下列单词的比较级和最高级highdeepbiglongoldyoung自主互助学习请根据预习写出下列短语1.最高的山____________________2.最长的河____________________3.八百万平方公里_______________4.1025米深____________________5.……的人口_________________6.……的高度____________________7.和…一样大_____________8.少于……的长度____________________9.最古老的国家之一____________________【课堂探究】1.long的名词性是__________翻译成__________，high的名词形式__________翻译成__________，表达东西的长度可以有两种方法__________例如：这条河100米长。1）The__________oftheriveris100meters.2）Theriveris__________.2.Oneofthemostendangeredanimalsintheworld__________thegiantpanda.China__________oneoftheoldestcivilizationsintheworld.oneof+名词复数，谓语动词要用__________数。eg：其中一本书是新的。3.Thepopulationoftheworldis6400000000.对人口这个数字划线提问要用特殊疑问词__________。____________________thepopulationoftheworld？4.asbigas和…一样大as…as之间的形容词用__________级。TheYellowriverisnotaslongastheYangtzeriver.否定形式notas…as意为__________。5.CanyoutellmeabitmoreaboutChina?我们学过的可以修饰比较级的副词和短语还有__________注意比较级和最高级WhichisthesecondlongestriverinChina?Whichriverislonger,theNileortheYellowRiver?最高级一般用于__________者以上相比，最高级前一般要加定冠词__________，比较级一般用于__________者之间的比较，被比较者用__________引出。【当堂检测】（一）根据句意和首字母补全单词。1.Thel______riverinAsiaistheYangtzeRiver.2.Chinaisoneoftheoldestc________intheworld.3.Oneoftheo________countriesintheworldisChina.4.M__________ofcityliesthreemetersbelowsealevel.5.Ourplaygroundisabout2000s_______metersinsize.(二)单项选择。1.It’s______intheworld.A.thebiggestdesertB.biggestdesertC.thebiggestdesertsD.biggerdesert2.Therearenoman-madestructuresas_______theGreatWall.A.biggerB.bigC.biggerD.thebiggest3.TheNileis6,470_________.A.kilometersB.kilometerC.kilometerslongD.kilometerlong4.MountTaiis_______lowerthanQomolangma.A.lot’sofB.manyC.veryD.much5.Shanghaiisoneof_______intheworld.A.morebigcityB.thebiggestcityC.thebiggestcitiesD.themostbigcity【教学反思】
