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1、ReferenceforTeachingⅠ.异域风情KoalaWhydidthekoalacrosstheroad?Togettolessharmfultreeleavesontheotherside,accordingtonewAustralianresearch.Foryearskoalashavepuzzledscientistsbyriskingtheirlivestocrossbusyhighwaystoeatfromaparticulareucalyptustree(桉树)whilerefusinghundredso
2、fothertreesofthesamespecies.Itisanewchemicalinthoseparticulareucalyptustreeswhichstopthekoalasfromeatingthem.Koalashaveadigestivesystemthatletsthemnotbeharmedbythepoisonintheeucalyptustree,whichcouldbeharmfultohumans.TheGuinnessBookofRecordslistskoalas,nativetoAustrali
3、aandindangerofextinction,astheworld’smoststricteaters.Theyareknowntochoose0.6kilogramleavestoeatadayfromninekilograms.Akoala’sdietisalmostwhollylimitedtoeucalyptusleaves,verylowinenergy-producingnutrients,butitisthepicky(挑剔的)eatinghabitwhichisputtingtheanimalatrisk.Sinc
4、eEuropeansettlement,about80percentofAustralia’seucalyptusforestshavebeenclearedandmostremainingtreesareonprivateland.Thekoala’sslowmovementalsomakesitafrequentvictimofdogs,carsandbushfires.TheAustralianKoalaFoundationsaysthat4000koalasarekilledeachyearbydogsandtraffic.K
5、oalasnownumberlessthan100000downfrommillionsinthe1920swhentheywereshotfortheirfur.Ⅱ.知识归纳1.不能用于进行时态和被动语态的动词英语中有些动词比较特殊，它们不能用于进行时态和被动语态，这样的（短语）动词常见的有：(1)belongto属于……Oursuccessbelongstoallthepeoplepresent.我们的成功属于在座的每一个人。(2)meet遇见；碰到Imethiminthestreetateightyesterday
6、morning.昨天早晨8点钟我在街上碰到了他。(3)stay,keep,remain等动词Theweatherhasstayedhotrecently.最近天气一直很热。Afterhiselectiontoahighofficer,heremainedmodest.在被选为高级领导干部之后他仍然谦虚。(4)washeasily(易洗)，breakeasily(易折),writesmoothly(写起来流畅),lighteasily(易燃)等动副搭配。Thiskindofclothwasheseasily.这种布容易洗
7、。Itisverywet,thematchdoesnotlighteasily.天气很潮湿，火柴不易划着。(5)stand,lie等静态动词这些动词表某物位于某处。Therestandsahighbuildingoverthere.那边矗立着一座高高的楼房。(6)taste,feel,look,smell,sound等感官动词Thiskindoffoodtastesgood.这种食物尝起来味道很好。Icealwaysfeelscoldtous.对我们来说冰摸起来总是冷的。(7)sellwell(畅销)，lastw
8、ell(持久)，washwell（耐洗），writewell(写起来流畅)等动副搭配。Thiskindofflowersellswell.这种花很畅销。Thepenproducedinthisfact
