Unit+3+The+Internet+Discovering+Useful+Structures高中英语人教版（2019）必修2

UNIT3THEINTERNETDiscoveringUsefulStructuresTalkaboutsomethingthathasbeendone

PartⅠRevision1.（事物的）功能/机能；（人的）作用/职责n

________2.电池（组）；电瓶n________3.确认（安排、日期或情况）vt

________4.无线保真；无线网络n_______5.压；按；挤；推

v__________6.按钮/开关n_________7.文件（夹）；档案

n

_________8.把...变成...9.按按钮10.复制文件11对...作出评论12.发现;查明;弄清13.最好做某事

functionconfirmWi-Fipressbuttonfilebatterymake/change/turn...intopressthebuttoncopythefilefindoutmakeacommentabout/onhadbetterdosth.

构词法1._________n.功能;作用;机能&vi起作用;正常工作;运转→functionaladj.功能的;起作用的2._____________vt.确认;使确信→

confirmationn.确认;证实3.

_____________v.压;按;敦促&n.压;按;推;新闻界;出版社→

pressuren.压力functionconfirmpressCompletethesentencesaccordingtothetext.Much__________________(write)aboutthewondersoftheWorldWideWeb.People’slives___________________(change)byonlinecommunitiesandsocialnetworks.Manypeople_________________(help)bytheclub.Jan’slife___________________(improve)greatlybytheInternet.havebeenchangedhavebeenhelpedhasbeenimprovedhasbeenwritten

PartⅡLead-inReadthepairsofsentences.Underlineandcomparethedifferentverbforms.Jan’slifehasbeengreatlyimprovedbytheInternet.TheInternethasgreatlyimprovedJan’slife.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.

PartⅡLead-in

PartⅢPresentationVerbformActivePassiveHowdoweformthepresentperfectpassivevoice?Fillintheblank.have/has+v.-ed______________________have/has+been+v.-edWeusethepassivevoiceinthepresentperfecttensetotalkaboutsomethingthathasbeendone.Theverbformis“__________________”.has/havebeendoneTheInternethasgreatlyimprovedJan’slife.(Activevoice)Jan’slifehasbeengreatlyimprovedbytheInternet.(Passivevoice)Observesentencesandfigureoutthestepstochangetheactivevoiceintopassivevoice.Step1Movetheobjecttothebeginningofthesentence.Step2Changetheactiveformoftheverbintopassiveform,maintainingthetenseofthesentence.Step3Addthepreposition“by”beforetheoriginalsubject,ifyouwanttomentionit.Rememberitcanbeomitted.Changethesentencesintothepresentperfectpassivevoice.They’vebuiltakindofnewPCwithmorefunctions.→AkindofnewPChasbeenbuiltwithmorefunctions.1.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.2.Someonehaslostanidentitycard.3.HaveyouconfirmedtheWi-Fipassword?4.Haveyoupressedthebuttonyettocopythefile?5.Hasanyonemadeacommentabouttheonlinedatabase?Anidentitycardhasbeenlost.HastheWi-Fipasswordbeenconfirmed?Hasthebuttonbeenpressedyettocopythefile?Hasa/anycommentbeenmadeabouttheonlinedatabase?Findoutthedifferencesinmeaningandfunctionbetweentheactiveandpassiveforms.Inanactivesentence,thesubjectisdoinganactiontoanobject;theyareusedoften,astheyaremoredirect.Inapassivesentence,

thesubjectishavingsth.donetoit,andthedoerofthatactionisnotnecessarilymentioned.Theyareoftenusedwhenthedoerofanactionisunknown,notimportant,orpreferrednotnamed.肯定式

have/has+been+v.-ed否定式

have/has+not+been+v.-ed一般疑问句

Have/Has+主语+been+v.-ed?特殊疑问句疑问词+have/has+been+v.-ed?表示动作发生在过去,到现在已经完成或对现在产生的影响。动词和被修饰主语构成被动关系。e.g.Thecarpetlooksnice.Ithas

already

beencleaned.Theresultoftheirexperimentshasn'tbeenpublishedyet.

Haveyouever

beenbittenbyadog?1.表示一个被动的动作在说话之前已完成，强调过去的动作对现在造成的影响或结果。常与already,yet,just,ever,never,recently等副词连用。e.g.Thehousehasbeenusedformanyyears.ThepartyhasbeenplannedsincehecametoChina.Hernovelshavebeentranslatedintomanyforeignlanguagessofar.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，常与“for+一段时间”,“since+从句”,sofar等状语连用。【拓展】

在时间、条件状语从句中，通常要用现在完成时的被动语态代替将来完成时的被动语态。

e.g.Iwillgotoplayfootballassoonasthehomeworkhasbeenfinished.

Ifaplanhasbeenmade,weshouldputitintopractice.e.g.这本书借了一周了。Thebookhasbeenkeptforaweek.

这个工程已经开始多久了？Howlongagowasthisprojectstarted?(V)1.borrow,begin,start,buy,marry,open,join等非延续性动词的现在完成时的被动语态不能与表示一段时间的状语连用。若要表达相应的意思，需要改变动词或时态。2.带有双宾语的动词，如give,send,bring,take,teach,show,tell,make,sing,write,sell,buy,lend,offer,hand,pass,get等，变为被动语态时，一般是把指人的间接宾语变为主语。如果将直接宾语变为被动句的主语，间接宾语前要加to或for。e.g.1.Mr.Wanghastoldusthetimeofthelecture.Wehavebeentoldthetimeofthelecture.2.Thepolicehavetaughthimthetrafficrulesmanytimes,buthestillignoredthem.Thetrafficruleshavebeentaughttohimmanytimes,buthestillignoredthem.3.带有复合宾语(宾语+宾语补足语)的动词变为被动语态时，只能将宾语变为主语，原来的宾语补足语保特不动。主动语态中不带to的不定式作宾补，在被动语态中要加上to。Themanagerhasmadetheworkersworkawholedaywithoutstop.e.g.Theworkershavebeenmadetoworkawholedaywithoutstop.4.短语动词变为被动语态时，要注意保持短语动词的完整性，不可漏掉动词后面原有的介词或副词。Theyhavereffertothesecasesintheexpert’sreport.e.g.Thesecaseshavebeenreferredtointheexpert'sreport.选用括号内合适的内容完成下面短文。TheInternet1.__________________(hasconsidered,hasbeenconsidered)asoneofthemostimportantinventionsinthehistoryofmankind(人类)andInternetExplorer2.__________________(hasused,hasbeenused)for25yearsallowingustoaccesssuchanimportantinvention.Butafteralltheseyears,it3.________________(hasdecided,hasbeendecided)thatMicrosoft'sappsandserviceswillstopsupportingInternetExplorer11.hasbeendecidedhasbeenconsidered

used

hasbeen

PartIVPracticeReadthepoemandunderlinethepresentperfectpassivevoiceinthefollowingpoem.LookatthewayyourfacehasbeenwashedLookatthewayyourteethhavebeenbrushedLookatthewayyourshoeshavebeencleanedYou’dbetterdothemagain.LookatthewaytheflowershavebeenplantedLookatthewaythegrasshasbeencutLookatthewaythepathshavebeensweptIhopethatyou’llcomehereagain.Readthepoemagain.Thenthinkofyourownsituationandwriteasimilarone.Lookattheway__________________________Lookattheway_________________________Lookattheway__________________________________________________________________thepicturehasbeenpaintedthesonghasbeenwrit