最新英语人教版选修六Unit4-using-languageppt课件.ppt

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1、英语人教版选修六Unit4-using-languagestormsfloodsWhatcanwedoaboutglobalwarming?WhatisOuyangGuang’sopinionaboutenvironmentalproblems?2.DoesEarthCareagreewithhisopinion?SkimmingIndividualscanhavelittleeffectonenvironmentalproblems.No.Together,individualscanmakeadifference.Readthesecondlettercarefullyand

2、fillintheblanks.Whatcanwedoaboutglobalwarming?◆Turna(n)_________________offwhenyou’renotusingit.◆Putonmoreclothesinsteadofturningupthe_________.◆Walkor_____________insteadoftakingmotorvehicles.◆________cans,bottles,plasticsandnewspapers.electricalapplianceheatrideabikeRecycleCarefulreading◆Bu

3、ythingsmadefrom____________________.◆Buyproductsthataremadetosave________.◆__________inyourgardenoryourschoolyard.◆Talkwithyourfamilyandfriendsabout_______________.recycledmaterialsenergyPlanttreesglobalwarmingDifficultpointscommitmentputupwithbecasualabouteconomicaltolerant;bearapromisetodos

4、th.providinggoodserviceorvalueinrelationtotheamountoftimeormoneyspentnotshowingmuchcareorthoughtColumnAColumnBI.根据下列各句句意及所给单词的首字母或汉语提示，写出各单词的正确形式。1.You’llneedthreelargec____ofpaint.2.Igotoutofthecarbutleftthem______running.3.Theydecidedtosetupa(n)______(核的)powerstation.4.I’llheatitupinthe____

5、_____(微波炉).PractisecansmotornuclearmicrowaveII.用所给词的适当形式填空。1.Therewas_____________(disagree)amongdoctorsaboutthebestwaytotreatthedisease.2._________(pollute)fromcarsisthemaincauseofglobalwarming.disagreementPollutionIII.根据括号内的提示将下列句子补充完整。Ifshecould______________________________(忍受那里的条件),wewou

6、ldtakeherwithus.2.Idon’tmindyourknowingit________________________(只要事情不进一步发展).3.Ifyouwanttosaveenergy,you’dbetternotusetheairconditioner,theheater_________(等等)whenitisnotnecessary.putupwiththeconditionstheresolongasitgoesnofurtherandsoon4.Irealizedthatshewasright—andit_________________(有影响).m

7、adeadifference第2章正弦交流电路2.1正弦交流电的基本概念2.2正弦量的表示方法2.3基耳霍夫定律的相量形式2.4单一元件的正弦响应2.5R、L、C串联电路的正弦响应2.6阻抗的串联与并联2.7电路中的谐振2.8功率因数的提高教学基本要求理解正弦交流电的三要素：相位差、有效值和频率，理解相量表示法。理解电路基本定律的相量形式、复阻抗和相量图，掌握用相量法计算简单正弦电路和方法。了解正弦交流电路的瞬时功率，掌握有功功率、功率因数的概念和计算方法，了解无功功率、视在功率