选修6unit4languagepoints

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1、Unit4GlobalwarmingLanguagePoints:Warmingup:Anenergysourceis“renewable”whensuppliesofitneverrunoutand“non-renewable”whenonedaytheywillrunout.Pre-reading1.Theairinsideiswarmbecausetheglasstrapstheheatfromthesunandkeepsitfromescaping,whichmakesthegreenhousehea

2、tupandsotheplantscangrowthroughoutthecoldperiod.温室气体里面的空气是温暖的，因为玻璃从太阳获取了热量并防止了热量的流失,这使得温室里的温度升高，于是植物可以在寒冷的季节里生长。heatup:vt./vi加热；发热；热起来heat(up)somewatertrap:v.(1)(usuallypassive)困住，关住，使陷入危险中e.g.Twentyminersweretrappedunderground.20名员工被困在地下了。(2)(toholdandkeep

3、gas,water,etcsothatitcanbeusedlater)把（气体，水等）储存，留存theglasstrapstheheatfromthesunandkeepsitfromescapingn.陷阱setatrapbet________s_________c_________l_______in陷入，被困住InApril,thousandsofholidaymakersremained_______abroadduetothevolcanicashcloud.A.stickingB.stuc

4、kC.tobestuckD.tohavestuck2.Intheatmospheresurroundingtheearththerearegasescalled“greenhousegases”.Reading:TheEarthisBecomingWarm---ButDoesitMatter?全球变暖---这会带来什么影响吗?1.★fahrenheit:adj.“华氏温度计的”冰点是32度；沸点是212度。Fahrenheit要大写第一个字母，它的简写形式是F或Fahre.g.Waterfreezesat32

5、degreeFahrenheit（32°F）.★degree:n.“温度”。通常跟在数词的后面；或在数词的右上角加“°”其后常跟表示温度单位的词，Fahrenheit“华氏的”，Celsius/Centigrade“摄氏”，写成“degreesFahrenheit;degreesCelsius/Centigrade”,degree常用复数形式；也常简略成：°F或°C.★Celsius/Centigrade:“摄氏的，常见略成为C.”,冰点是0度，沸点是100度。在英美国家，温度的表达常用Fahrenheit,

6、亚洲国家常用Celsius/Centigrade。e.g.ThetemperatewastendegreesCelsius/Centigrade10°thismorning.2.Thatprobablydoesnotseemmuchtoyouorme,butitisarapidincreasewhencomparedtoothernaturalchanges.Compare…with…_________________________Compare…to…(1)________________(2)_____

7、____________(1)___________(compare)thesetwosentencesandyouwillfindthedifferences.(2)____________(compare)thesetwosentences,youwillfindthedifferences.(3)____________(compare)withthatone,thissentenceiseasy.(4)____________(compare)togirls,boysarelazy.(5)Girlsa

8、re__________(compare)_____flowers.(6)Youngpeople_______thesuninthemorning.A.comparewithB.comparetoC.arecomparedtoD.C.arecomparedwith(7)Livinginacitycan’t________livinginthecountry.A.becomparedtoB.compa