Unit+3+The+World+of+Science+Using+language+Present+perfect+passive+课件-【知识精讲精研】高中英语外研版（2019）必修第三册

..Unit3:TheworldofscienceUsingLanguage:Presentperfectpassive

Attheendoftheclass,you’llbeableto:1.LearntoidentifyPresentperfectpassive.2.UnderstandthebasicknowledgeaboutPresentperfectpassive.3.Writesentencesusingthepassive.Lead-in3DLaserPrintervirtualrealitywearabletech.Richard’snewbookTheNewAgeofInvention

(publish).Nowdays,importantadvances

(make)inmedicineandenvironmentalsciencethankstoincreasingcomputerpower.Newinventionslike3Dprinters

usetomakereplacementheartsandboneparts.Asforthetimemachine,Richardthinksnothinglikethis_______________(invent)yet..

Fillintheblanksaccordingtotheinterview.hasbeeninventedhavebeenusedhavebeenmadehasjustbeenpublishedLead-inWhatistheircommonstructure?.Areyoufamiliarwiththesesounds?Lead-inYouhavebeenslain.Anallyhasbeenslain.slay--slew/slayed--slain/slayed击杀Presentperfectpassive现在完成时的被动语态done.Whatisthetensemadeupof?

have/has

been

done

have/has

done

bePresent

perfectPassivevoicePresent

perfectpassiveIdentifythetense.Understandthetense1.Someonehasasked“you”aboutthetitleofyourbookbefore.2.Peoplehaveused3Dprinterstomakereplacementheartsandboneparts.Presentperfectpassive.Understandthetense3.Whatisthedifferencebetweenthetwogroupsofsentences?4.Whydoestheauthorchoosetousethepassiveforminsteadoftheactiveforminthereadingpassage?passiveformactiveformToemphasisewhathasbeendone,ratherthanwhoorwhatdoestheaction.PresentperfectpassiveUnderstandthetenseWhentousethePresentperfectpassive?1.不知道或者没有必要说明动作的执行者是谁；

Suchbookshavebeenwrittenforchildren.

2.

强调动作的承受者，而不是动作的执行者；

Alltheproductshavebeentested.3.动作的执行者很模糊;

Theletterhasbeenopened.4.有时候为了礼貌的需要，避免说出动作的执行者。

Theyhavebeentoldmanytimesnottomakenoises.（已经为儿童编写这类图书了。）（这些产品都经过测试了。）（这封信被人拆开了。）（已经有人多次跟他们说别那么大声了。）PresentperfectpassiveUnderstandthetenseHowtousethePresentperfectpassive?Presentperfectpassive1．表示被动的动作在说话之前已经完成，强调过去的动作对现在造成的影响或产生的结果，通常与already，yet，never，recently等副词及时间状语sofar，bynow，uptill/tonow，since等连用。Thedatabase

hasalreadybeenupdated.数据库已经被更新了。(现在可以使用新的数据库了)2．表示一个被动的动作或状态从过去开始一直持续到现在，并可能继续持续下去，常与for或since等引出的时间状语(从句)连用，或用于how

long引出的句子中。Themachinehasbeenrepairedfortwohours.这台机器已经被修了两个小时了。(可能还会继续被修)3．用在条件状语从句中，表示将来某时已经完成的动作。Youshouldn’tleaveschoolbefore

yourhomeworkhasbeenfinished.在你的作业没完成之前你不应该离开学校。UnderstandthetenseHowtousethePresentperfectpassive?Presentperfectpassive4．不及物动词（词组）如happen,takeplace,die,appear没有被动语态，而不及物动词加介词或者副词构成的短语，相当于及物动词，可以用于被动语态。注意介词和副词不能丢掉。

ThechildhasbeentakengoodcareofbyGrandmaWangalltheseyears.孩子们这些年被王奶奶照顾得很好。5.非持续性动词，如come,go,start,begin,leave,arrive,reach,get,marry,die等现在完成时的被动语态不能和表示一段时间的状语连用。若要表达相应意思，需改变动词或时态。(1)Thenewcarhasbeenkeptforamonth.(buy)(2)Howlonghasthemeetingbeenon?(begin)Thisdictionaryhasnotbeenborrowedsincelastweek.但这类动词的否定式可表示动作的持续过程，可与since或for构成的时间状语连用。PracticethetensePresentperfectpassivePracticethetenseManythingsinourliveshavebeenaffected.3D-printedhamburgershavebeenservedtocustomersbysomerestaurantsinLondon.Butperhapsthemostsignificantsuccessthathavebeenachievedtodateisinmachine.Humanbodypartshavebeenmade,includingabeatingheat,with3Dprintingtechnology.anew3D-printedshellhasbeengiventoaturtleinjuredinaforestfire!PresentperfectpassivePracticethetenseImagineyouareDrMoore.Lookatthepicturesandtellthepoliceaboutthedamageandlosstoyourlab.

Usethepresentperfectpassivewhereappropriate.PresentperfectpassivePracticethetensePresentperfectpassive

Inthemorning,whenIwentintomylab,Ifeltextremelysurprised.Whatamessitisnow!Mylab

_____________(break)

into.Theonlyrobotatthedoor

_____________

(push)downintopieces.Thedoorofthecupboardwasopen.Somechemicalapparatusessuchastestglassesandtubes_______________

(knock)over.Inaddition,mypapersonthedesk________________

(turn)

indisorder.hasbeenbroken

hasbeenpushed

havebeenknockedhavebeenturned

PracticethetensePresentperfectpassive1.Thelockonthedoorhasbeenbroken.2.Thewindowhasbeenbroken.3.Mytwolaptopshavebeenstolen.4.Beakersandtesttubeshavebeendestroyed.5.Thebookcasehasbeenopened,andsomefileshavebeentakenawaywhileothers

havebeenthrowneverywhere.6.Therobothasbeendamaged.PracticethetensePresentperfectpassive1.Itisdifficulttofigureoutaglobalpopulationofpolarbearsasmuchoftherangehasbeenpoorlystudied.(2019全国Ⅰ卷语法填空)由于大部分有关北极熊生活范围的研究还很少,所以很难统计出全球北极熊的数量。2.A90-year-oldhasbeenawarded“WomanOfTheYear”forbeingBritain'soldestfull-timeemployee-stillworking40hoursaweek.(2019全国Ⅱ卷语法填空)一位90岁老人因为是英国最年长的全职雇员而被评为“年度女性”。她仍然一周工作40个小时。3.Wildlifehasbeengreatlythreatenedinthemodernage.(2019江苏完型填空)在现代,野生动植物受到极大程度的威胁。Translate

the

following

sentences

from

Englishto

Chinese.直击高考PracticethetensePresentperfectpassive1Greatchanges_____________________(takeplace)inmyvillagesince2012.2Morepatients___________________(treat)inhospitalthisyearthanlastyear.3_______thephoto______________(develop)yet?Ifnot,you`dbettergetitreadyassoonaspossible.4--Areyougoingtotheparty?--No,I_____________________(notinvite)yet.5Morethanadozenstudentsinthatschool______________(send）tostudymedicinelastyear.6Morethan5000usedbikes__________________(collect)sincethetwobrotherssetuptheorganisation.

havetakenplace

havebeentreated

Hasbeendeveloped

havenotbeeninvited

weresent

havebeencollected直击高考PracticethetensePresentperfectpassive直击高考7Everypossibl