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1、Unit7What’sthehighestmountainintheworld?SectionB(3a-SelfCheck)Ⅰ.写出下列形容词的比较级和最高级1.wild→→2.thick→→3.huge→→4.wide→→5.dangerous→→答案:1.wilder;wildest2.thicker;thickest3.huger;hugest4.wider;widest5.moredangerous;mostdangerousⅡ.句型展示1.停止向海洋倒垃圾。Stop__________rub
2、bish_________thesea.2.鲸鱼的一些身体部位被出售用来制作蜡烛和肥皂等东西。Whalesparts__________________makethings_________candlesandsoap.答案:1.putting;into2.soldto;like3.因为人们为了得到肉、脂肪和食用油而捕杀鲸鱼,一些种类的鲸鱼正处在危险中。Somekindsofwhalesare______________becausehumanscatchwhales_______meat,fatan
3、doil.4.我们应该保护鲸鱼免受水污染。Weshould_______whales_______waterpollution.5.老虎比人强壮得多。Atigeris______________thanaman.答案:3.indanger;for4.protect;from5.muchstrongerWeshouldprotectwhalesfromwaterpollution.我们应该保护鲸鱼免受水污染。【自主领悟】protect是及物动词,意为“保护,保卫”;protection是名词,意为“保护
4、”,常用短语为protect...from...意为“保护……免受……的侵害或侵犯”。例如:Everyoneshouldprotecttheenvironmentfrompollution.每个人都应该保护环境免受污染。【温馨提示】(1)prevent/stop/keep...fromdoing...“阻止……做……;阻止……的发生”。(2)prevent/stopsb.fromdoingsth.用法相同,在主动语态中介词from可以省略,被动语态中不能省略。keepsb.fromdoingsth.中
5、的from无论在主动语态中还是在被动语态中都不能省略。【活学活用】①他抬起胳膊,保护他的孩子免受伤害。Heraisedhisarmto_________hischild_________hurt.②我们应该多植树以阻止沙尘暴的发生。Weshouldplantmoretreesto_________thesandstorm_________.答案:①protect;from②prevent/stop;(from)happeningSomekindsofwhalesareindangerbecausehu
6、manscatchwhalesformeat,fatandoil.因为人们为了得到肉、脂肪和食用油而捕杀鲸鱼,一些种类的鲸鱼正处在危险中。【自主领悟】beindanger是介词短语,意为“处在危险中”;其反义短语为:beoutofdanger意为“脱离危险”,在此,danger是不可数名词,意为“危险”,其形容词形式为dangerous。【活学活用】①Somewildanimalsare(处在危险中)becauseoftheflood.②It’s(danger)toplayonthestreet.答案
7、:①indanger②dangerous用所给词的适当形式填空。1.Chinaisalot(crowded)thanCanada.2.Anadultelephantweighsmany(time)morethanababyelephant.3.Accordingtoasurvey,thenoisewillpreventthebabyrabbitsfrom(grow)normally.4.Theoldmanstopped(write)musiclastyear.5.Thepolicegiveussomu
8、ch(protect).答案:1.morecrowded2.times3.growing4.writing5.protection选词填空。stop,sea,jump,teeth,for,protect,rules,danger,huge,likeWhalesare1animals.Someofthemhave2.Theyliveinthe3.Theyeatsmallfishandothersealife.Theycan4highoutofthewate
