仁爱版英语八年级下Unit4OurWorld学案Topic1wesharetheworldwithplantsandanimals一.重点词语1.share…with与……共享2.playwith玩弄，玩耍3.indanger在危险之中4.feedon以……为食5.thinkabout考虑，思考6.enjoynature享受自然7.atnight晚上8.inthedaytime白天9.summervacation暑假10.thousandsof成千上万11.infact事实上12.findout查明，发现13.innature在自然界二.重点句型１.Ｐlantsaremorebeautifulthananimals.植物比动物更漂亮。２.Theplantsstaygreenlongerthere.那儿的植物能更长时间保持绿色。３.Therainforestsareveryimportanttous.（热带）雨林对我们很重要。４.Waterisnecessaryforallplants.Itisthemostimportantthingtoalllivingthings,wemustsaveeverydropofwater.水对所有植物是必需的。它对所有生物都重要，我们必须节约每一滴水。５.Isn’titinteresting？是不是很有趣呀？６.Itisoneofthemostdangerousfishintheworld.它是世界上最危险的鱼之一。７.Itissostrange！太奇怪了！三.语法学习（一.）形容词的比较级和最高级的构成１.规则变化：（1.）一般在词尾加—er或—est.如：fresh—fresher—freshest.（2.）以字母e结尾的形容词，加r或st,如：late—later—latest.（3.）以重读闭音节结尾的词，词尾只有一个辅音字母时，应双写这一辅音字母，再加er或est.如：big—bigger—biggest.（4.）以辅音字母＋y结尾的双音节词，先改y为i，再加er或est.如：happy—happier—happiest.（5.）部分双音节词和多音节词前面加more或most构成比较级或最高级。如：careful—morecareful—mostcareful,beautiful—morebeautiful—mostbeautiful.２.不规则变化：good/well—better—best,little—less—least,many/much—more—most,bad/ill—worse—worst,far—farther/further—farthest/furthest.（二.）形容词的比较级和最高级的用法１.比较级Ａ＜Ｂ或Ａ＞Ｂ，经常与than搭配，或给出比较的二个内容。可用much和alittle修饰．２.三者或三者以上比较用最高级，一般给出比较范围．如：of（in）＋…。(1)例句：①I’mhappierthanyou.我比你更快乐。②Plantsaremuchmorebeautifulthananimals.植物比动物漂亮的多。(２)例句：①Theboyisthetallestinmyclass.这个男孩是我们班最高的。②LessonTwoisthemostimportantofall.第二课是所有中最重要的。四.交际用语：学习如何用英语描述和谈论我们生存的自然环境Doyoulikeplantsoranimals?Whatareyouthinkingabout?Whydoyouthinkso?Whatkindofwildanimalisthemostdangerous,thetiger,thesnakeorthebear?Whymustwesaveeverydropofwater?五．课堂练习（一）Ⅰ.单项选择()1.Allanimalsneed_______water.A.littleB.manyC.lotofD.plentyof()2.—YouarestandingtooneartotheTV.Canyoumoveabit_______?—OK,Mom.Isitallrighthere?A.fasterB.slowerC.fartherD.nearer()3.—Didyouhavebreakfastthismorning?—No,Igotuplateandwenttoschool_______breakfast.A.forB.inC.withoutD.after()4.Yourclassroomissodirty.Everyoneshouldkeepit_______.A.dryB.openC.quietD.clean()5.Therewere_______animalsintheforestmanyyearsago.A.thousandofB.thousandsofC.threethousandofD.threethousandsof()6.—Wow,yourschoolisgreat!—Itis_______schoolinthecity.A.muchmorebeautifulB.muchbeautifulC.themostbeautifulD.beautiful()7.Bluewhalesarethelargestandheaviestanimalsintheworld,butthey_______thesmallestseaanimals.A.feedinB.liveinC.feedonD.fedon()8.—ZhouFang,canyoufinishyourhomeworkbetterwith_______time?—IthinkIcan.A.fewB.fewerC.littleD.less()9.Asweknow,waterisveryimportant_______us.A.ofB.toC.onD.with()10.Look!Thereisarabbit,two_______andtwo_______inthepicture.A.cows;sheepsB.mice;tigerC.gooses;snakesD.foxes;wolvesⅡ.情景交际选择方框中的句子完成对话。Mike:Hi,Jim,whatareyoutalkingabout?Jim：Oh,wearetalkingaboutsomethingintheforest.Mike:11Jim:Ipreferplants.Mike:12Jim:Becausetheyareverybeautiful...
