人教版高中英语必修2Unit4知识点详解

Part1.Warmingup1.Wildplantsandanimalshavetolookafterthemselves.wildadj.野生的,野的,未驯化的；无居民的,荒凉的[典例]1).Heenjoysfilmingwildanimals.他喜欢拍摄野生动物。2).Wewalkedintoawildmountainregion.我们走进荒无人烟的山区。[重点用法]bewildaboutsth/sb（对某事物[某人]）极热心或热爱bewildwith…因……而发狂[练习]中译英1).群众欣喜若狂。_______________________________________________________________________________2).孩子们都特别喜欢这个新计算机。_______________________________________________________________________________Keys:1).Thecrowdwentwildwithdelight.2).Thechildrenarewildaboutthenewcomputer.2.Iftheirhabitatisthreatenedortheycan’tfindenoughfood,theirnumbersmaydecrease.decreasev.减少；（使）变小；变少n.减少；降低；减少的数量，其后常接介词in联想拓展decrease(sth.)to/by...减少到/了……increasevi.&vt.增加；增长；增强n.增加；增加的数量increaseto/by...增加到/了……onthedecrease/increase在减少/增加Theyaremakingeveryefforttodecreasetheproductioncost.他们正在尽力降低生产成本。Themembershipdecreasedto150.会员数减少到了150人。Thenumberofstudentsintheclasshasdecreasedby20.班级里的人数减少了20人。Therehasbeenadecreaseinourimports.我们的进口数量减少了。高手过招完成句子①这些措施将有助于降低生产成本。willhelpthecostofproduction.②人口出生率正在下降。Thebirthrateis.答案：①Thesemeasures;decrease②onthedecrease3.Asaresulttheseendangeredanimalsmayevendieout.dieout意为：灭亡，灭绝；逐渐消失联想拓展bedyingforsth./todosth.极想得到某物/渴望dieaway（尤指声音、光、风）逐渐消失;停止diedown（兴奋、激动等情绪）渐弱；渐息；平息dieoff（家族，种族等）相继死亡；（草木）枯死diefrom/of因……而死；通常由疾病、饥寒、情感原因造成的死亡用dieof,除此之外的原因用diefrom。Manyspecieswillsoondieoutifwedon’ttakeaction.如果我们不采取行动，许多物种将很快灭绝。Manyoldcustomshavediedout.许多旧的风俗已不复存在。高手过招(1)单项填空①Thiskindofplantsare.Somedaytheywillforever.（2009·12·甘肃天水检测）A.dyingoff；dieoutB.dyingaway；dieoffC.dyingdown；dieoutD.dyingout；dieaway②Unfortunately,thesoldierdiedawoundinthechest.（2009·12·山东德州检测）A.fromB.outC.offD.down(2)用die的相关短语填空①Thenoiseofthecarinthedistance.②Theoldtraditionsare.③Themanawound.④I’msomethingtoeat.解析:(1)①选A。前面句子用了进行时，表示正在灭亡，故用dieoff。后面表示有一天会永远消失，故用dieout。②选A。根据句意此处soldier死的原因应该是胸部受伤。(2)①diedaway②dyingout③diedfrom④dyingforPart2.Pre-reading,readingandcomprehending1.Whyaretheyindangerofdisappearing?它们为什么处于灭绝的危险中？indanger(of...)处于危险之中outofdanger脱离危险beadangertosb./sth.危险的人/因素[即学即练9](1)Thedrownedgirlwasobviously_________________________.很明显，那个溺水的女孩的生命危在旦夕。(2)Theoldhouseis_________________collapse.那所老房子有倒塌的危险。(3)Theyweretoldatthehospitalthattheirgrandmotherwas_________________.他们在医院得知他们的祖母已经脱离危险了。inimmediatedangerindangerofoutofdanger拓展：与in/outof搭配的短语inorder有秩序insight看得见introuble在困境中inline成行(队)inplace适合/当infashion时尚outoforder出故障(机器等工作不正常)outofsight看不见outoftrouble摆脱困境outofline不成一直线outofplace不合适outoffashion过时翻译句子①他有失去生命的危险。②手术成功了，病人现在已脱离危险。Hewasindangeroflosinghislife.Theoperationisasuccessandnowthepatientisoutofdanger.完成句子①他再这样下去会丢掉工作的。Heislosinghisjobifhegoesonlikethis.②警察说这个男人对于公众来说是个危险分子。Thepolicesaidthemanwasthepublic.答案：①indangerof②adangerto2.Daisyhadalwayslongedtohelpendangeredspeciesofwildlife.long渴望，极想We’relongingtoseeyou.我们渴望见到你。Thecouplelongdforachild.这对夫妇很想有个孩子。常用搭配：longtodosth.渴望做某事longforsth.渴望某事物longforsb.todosth.渴望某人做某事inthelongrun从长远来看nolonger不再solongas只要3.Daisyrespondedimmediately.respondvi.回答，答复；响应，作出反应responsen.回答，回复；反应respondtosb./sth.回答(比answer,replyto正式)respondtosb./sth.(with/bysth.)用……回应某人(事)respondto(疾病、身体的受伤部分)对医药有良好反应responsetosb./sth.(对人/物)的回答/回复/反应inresponseto作为对……的反应[即学即练1](1)Theystillhaven't____________myletter.他们至今仍没有回我的信。(2)He___________mysuggestion________alaugh/______laughing.他对我的建议报以一笑。(3)Hisillnessdidn't____________treatmentbydrugs.他的疾病对药物治疗没有反应。(4)Mymotheropenedthedoor____________________theknock,buttherewasnooneoutside.听到敲门声后，我妈妈打开了门，但外面一个人都没有。respondedtorespondedtowithbyrespondtoinresponseto4.InreliefDaisyburstintolaughter.reliefn.（痛苦﹑困苦﹑忧虑等的）减轻或解除[典例]1).Thedruggivessomerelieffrompain.这种药可以减轻一些痛苦。2).Ibreathed/heavedasighofreliefwhenIheardhewassafe.我听到他平安的消息时才松了一口气。[重点用法](much)toone’srelief使某人大为放心；使某人深感宽慰[练习]中译英1).我最庆幸的是没有迟到。______________________________________________________________________________2).见到你在这儿也就放心了。_______________________________________________________________________________Keys:1).Tomygreatrelief/Muchtomyrelief,Iwasn'tlate.2).It'sagreatrelieftofindyouhere.5.PleasetakemetoadistancelandwhereIcanfindtheanimalthatgavefurtomakethissweater.请带我到遥远的地方，在那里我可以发现为制作这件毛衣而提供毛绒的那种动物。distantadj.（空间或时间）远隔的,遥远的distancen.距离distantlyadv.远地；冷淡地[典例]1).Theairportisabouttenmilesdistantfromthecity.机场距离城市大约十英里远。2).Sheisadistantcousinofmine.她是我的远房表妹。[重点用法]bedistantwith/towardswithsb.对……冷淡[练习]中译英1).这两种学说之间没有什么关联。_______________________________________________________________________________2).她对妈妈总是很冷淡。_______________________________________________________________________________Keys:1).Thereisadistantconnectionbetweenthetwotheories.2).Sheisalwaysdistantwithhermother.6.Farmershunteduswithoutmercy.(1)mercyn.仁慈；宽恕；宽容；恩惠；幸运；怜悯常用结构：atthemercyofsb./sth.任由某人(某事物)摆布或控制havemercyon/upon对……有怜悯心showmercytosb.宽恕/怜悯某人withoutmercy毫不留情地；残忍地Theyshowedmercytotheirenemies.他们对敌人很仁慈。It’samercyshewasn’thurtintheaccident.她在事故中未受伤,真幸运。高手过招翻译句子①那只船在暴风雨中失去了控制。②可怜可怜我们吧！答案：①Theshipwasatthemercyofthestorm.②Havemercyonus!(2)huntvi.&vt.打猎，猎取；搜索Wolveshuntinpacks.狼是成群猎食的。Policearehuntinganescapedcriminal.警方