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Unit5LookintoScienceLesson28Ⅰ.根据汉语提示写出下列单词或短语1.移居;迁徙v._______2.奇异的;了不起的;极好的adj.________3.令人费解的adj.________migratefantasticpuzzling4.biology为名词,意为“____________”,________意为“生物学家”。5.grand意为“庄严的,外祖的,外孙的”,child意为“孩子”,__________意为“外孙,外孙女,孙子,孙女”。6.butter意为“黄油”,fly意为“飞”,________意为“蝴蝶”。生物学;生物biologistgrandchildbutterfly7.complete为形容词,意为“完全的”,其副词形式为“__________”,意为“完全地”。8.吸引某人的注意__________________9.鼓励某人做某事_____________________completelydrawone’sattentionencouragesb.todosth.Ⅱ.根据汉语提示完成下列句子1.这些飞回南方的蝴蝶是飞往北方的曾曾子孙。Thebutterflies____________thesoutharethegreat-greatgrandchildrenofthebutterflies__________thenorth.thatreturntothatleftfor2.当他们春天开始向北方飞行时,雌性蝴蝶产卵。______they____________northinspring,thefemales_______.Whenbegintotravellayeggs3.但是在墨西哥,人们砍伐了蝴蝶赖以休息的树木,因为它们需要更多的土地来耕种。ButinMexico,people________thetreesthatthebutterfliesneedtoreston_______theywantmoreland__________.cutdownbecauseforfarming4.科学家仍然不理解蝴蝶怎样知道什么时候飞回南方。Scientistsstilldon’tunderstand____thebutterfliesknow__________south.5.有许多奥秘还需那些对科学感兴趣的人来发现。Therearemanymysteriesyet__________________thoseinterestedinscience.howwhentoflytobediscoveredbyⅢ.Readthetextandanswerthequestions1.HowfardoesthisbutterflyinNorthAmericatravelsouthinfall?______________________2.WheredothebutterfliesinMexicolayeggs?_____________________________About4000kilometers.Theylayeggsononlyoneplant.要点1asmanyas多达Step1难点·探(1)asmanyas修饰可数名词,还是修饰不可数名词?(2)与asmanyas的相关短语是什么?Step2语境·悟*Here,asmanyas230millionbutterfliesspendthewinter.多达两亿三千万只蝴蝶在这里过冬。(P72)*Takeasmanyasyouplease.你要多少就拿多少。Step3知识·得asmanyas的用法asmanyas意为“多达,同……一样多”,用来修饰可数名词。【辨析】asmanyas与asmuchasasmanyas修饰可数名词,常用在人或物的具体数量前,侧重于具体数目,意思是“和……一样多”,“多达……”,表示“数目”上的比较;asmuchas修饰不可数名词,常用在“雨量、水量、时间量、重量、钱数、价格”等方面,表示总量和单位量的大小,表示程度。Step4考点·练()It’saharvestseason,500workersareworkingonthefarm.A.asmanyasB.aslittleasC.asmuchasD.asfewasA要点2leavefor动身去……Step1难点·探(1)leavefor后跟的是目的地,还是出发地?(2)leave的几种用法是什么?Step2语境·悟Thebutterfliesthatreturntothesoutharethegreat-greatgrandchildrenofthebutterfliesthatleftforthenorth.返回南方的蝴蝶是前往北方的蝴蝶的曾曾孙子(女)。(P72)*Theboyleftherewithoutsayingaword.小男孩没说话就离开了。*Don’tleavethebabyaloneathome.不要单独把孩子留在家里。Step3知识·得leave的一词多义含义用法离开①leaveA离开A地;②leaveforA动身去A地;③leaveAforB离开A地去B地遗留,遗忘leavesth.at/in...把某物遗忘在……使保持某状态①leave+宾语+宾语补足语;②leave...alone不理会,不管……Step4考点·练()①(2018·达州中考)—Jack,remember_______offthelightswhen________yourbedroom.—OK,Iwon’tforget,Mom.世纪金榜导学号A.turning;leavingB.toturn;leaveC.turning;leftD.toturn;leavingD②XuLeiandherteammatesare___________(将要动身去)theU.S.A.nextweek.leavingfor