Unit7InternationalCharitiesReading2somethingaboutblindness:theworkofORBIS:DrMa’sworkandhisfeeling:WordsandPhrasesUsefulexpressionsUsefulexpressions1.prevent:vt.阻止,预防vt.preventsb.fromdoingsth.阻止某人做某事prevent的名词preventionkeep结构中的from不可以省略,其余结构中的from可以省略.Forestshelptokeepthewaterfromrunningaway.森林有助于防止水的流失.Thedeadleavesonthegroundalsostopthewaterfromrunningaway.Inthisway,floodsareprevented.Thetreesintheforestscanpreventraindropsfromhittingthesoildirectly,sothesoilisnoteasilywashedaway.Thesunshinecanreachthevegetablesthroughtheglassofthegreenhouse.Andthecoldwindandraincanbepreventedfromgettingin.2.Ontheplane,volunteerdoctorsperformoperations.volunteer:n.v.Thehospitalsentvolunteerdoctorstohelpthepoorpeople.Thisworkcostsusnothing.It’llbedonebyvolunteers.Jennyvolunteeredtoclearupafterwards.3.operationn.anoperationonsb.operatevi.做手术,operateon某人或某身体部位Thedoctorsdecidedtooperateonheratonce.Thedoctorisoperatingontheeyesofthepatient.vt.vi.操作或开动机器Canyouoperatethecomputer?4.I’mproudthatIcanhelpsomanypeople.proud:adj.骄傲的,自高自大的,自豪的He’stooproudtospeaktopoorpeoplelikethis.beproud.prouda.priden.Sheistheprideofherwholefamily.takepridein…为…而骄傲Hetakesprideinhiscollectionofstamps.5.Allweneedisenoughmoneytocarryonwithourwork.1)carryonwithsth=carryondoingsth.,carrysth.on继续=continueCarryonwithyourworkwhileI’maway.Carryonworking……….whileI’maway.Carryonthegoodwork.2)carrysth.on进行或举行某事carryonaconversation/adiscussion/adialogue继续做同一件事选用括号内词组的正确形式填空：(carryonwith,performanoperation,begratefulto,beproudof,setup,beafraidof,volunteertodo,careaboutprovide…for,keephealthy)----WhereisDrWang?----Heis______________________intheoperatingroom.2.Thoughtheywereverytired,theystill______________theirwork.3.Ithinkmostofpeople____________snakes.选用括号内词组的正确形式填空：(carryonwith,performanoperation,begratefulto,beproudof,setup,beafraidof,volunteertodo,careaboutprovide…for,keephealthy)4.Weshould_____________byeatingwellandexercisingregularly.5.DoyouknowtheRedCrosswa