Unit3TheInternet
Grammar
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高中英语
Learningobjectives
Attheendoftheclass,youwillbeableto
1.knowtheform,themeaningandthefunctionofthepresentperfect
passivevoice
2.talkaboutthethingsthathavebeendone;
Manystudentslikethismovie.;
Thismovieislikedbymanystudents.;
种类;
TheInternethasgreatly
improvedJan’slife.;
高中英语
Howdoweformthepresentperfectpassivevoice?
Fillintheblankbelow.;;;
高中英语
Understandtheunderlinedpartsandfillintheformbelow
1.Howmanybuildingshavebeenbuiltinyourschool?
2.Havethelostkeysbeenfound?
3.Thedatehasnotbeendecidedyet.;
高中英语
Theusageofthepresentperfectpassivevoice
1.表过去开始的动作一直持续到现在，常连用的时间状语有：for+时间
段，since+时间状语(从句)，sofar,uptonow等。
如：
1)ThisclasshasbeentaughtbyMr.Lifortwoyears.
2)HisChinesehasbeenimprovedalotsincehecametoChina.;
2.表示某动作已经完成，并对现在造成影响，常与already,yet,ever,
never等连用。如：
1)Thebikehasnotbeenrepairedyet.
2)IhavealreadybeenintroducedtoMr.Li.;
高中英语
ChangethesentencesintothepresentperfectpassivevoiceExample:
They’vebuiltakindofnewPC.
AkindofnewPChasbeenbuilt.
1.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.
2.Someonehaslostanidentitycard.
3.Haveyoupressedthebuttonyettocopythefile?;
高中英语
1.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.
Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.
2.Someonehaslostanidentitycard.
Anidentitycardhasbeenlost.
3.Haveyoupressedthebuttonyettocopythefile?
Hasthebuttonbeenpressedyettocopythefile?;
高中英语
ThinkandAnswer
1、Whatarethesimilaritiesanddifferencesbetweenthepresentperfect
tenseandthepresentperfectpassivevoice?
两者都表示动作已经完成，并对现在造成影响或动作从过去开始持续到现在。
现在完成时，意为“已经做了”，主语是谓语动作的发出者
现在完成时的被动语态，意为“已经被做了”主语是谓语动作的承受者
2、Whencanweusethepresentperfectpassivevoice？
当动作的执行???没必要说明，不重要或者不清楚是谁时，多用被动语态。;
高中英语
Prac