人教版（2019） 必修第二冊 Unit 3 The Internet Discovering Useful Structures課件

Unit3DiscoveringUsefulStructuresTalkaboutsomethingthathasbeendone1Readthepairsofsentences.Underlineandcomparethedifferentverbforms.Jan’slifehasbeengreatlyimprovedbytheInternet.MuchhasbeenwrittenaboutthewondersoftheWorldWideWeb.TheInternethasgreatlyimprovedJan’slife.PeoplehavewrittenmuchaboutthewondersoftheWorldWideWeb.主語謂語主語謂語hasbeendonehasbeendone主語謂語hasdone主語謂語hasdone

active（主動語態(tài)）

passive（被動語態(tài)）Howdoweformthepresentperfectpassivevoice?Fillintheblank.VerbformActive（主動）have/has+donePassive（被動）____________________have/has+been+done現(xiàn)在完成時被動語態(tài)的構(gòu)成肯定式否定式一般疑問式特殊疑問式主+________________________________主+______________________________________________________________________________________________________have/has+been+donehave/has+not+been+doneHave/Has+主語+been+done…?疑問詞

+have/has+主語+been+done…?2Changethesentencesintothepresentperfectpassivevoice.ExampleThey’vebuiltakindofnewPCwithmorefunctions.→AkindofnewPChasbeenbuiltwithmorefunctions.Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.HaveyouconfirmedtheWi-Fipassword?Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.HastheWi-Fipasswordbeenconfirmed?主動被動主動被動高考鏈接【2022年新高考Ⅰ卷】Thecharity_______________(give)financialsupportrollitoutcountryside.該慈善機(jī)構(gòu)已經(jīng)獲得財政支持，以便在全國范圍內(nèi)推廣。hasbeengiven3現(xiàn)在完成時被動語態(tài)的用法強(qiáng)調(diào)過去的動作對現(xiàn)在造成的影響或結(jié)果，常與already,yet,just,never,ever,sofar,recently副詞連用。表示動作從過去開始持續(xù)到現(xiàn)在，并可能持續(xù)下去，常與for,since引導(dǎo)的時間狀語連用，或用于Howlong句型。用在時間或條件狀語從句中，表示將來某時已經(jīng)完成的動作，換言之，用現(xiàn)在完成時被動語態(tài)替代將來完成時的被動語態(tài)。Theclassroomlookspretty.Ithasjust____________(clean).Howlonghastheschool_____________(build)?Youshouldstayathomebeforeyourtask__________________(finish).beencleanedbeenbuilthasbeenfinished下列時間狀語常與現(xiàn)在完成時連用alreadyyet(尚；已經(jīng))latelyrecentlysincetheneversinceever(曾經(jīng))foralongtimesofarbynowinrecentyearsinthepastfewyearsovertheyearsinthelastfewyears練習(xí)一下Manyproblems___________________(find)withournewcomputeroverthelastfewyears.Someprojectsforthecompany___________________(develop)bynow.havebeenfoundhavebeendeveloped現(xiàn)在完成時被動語態(tài)一般過去時被動語態(tài)過去過去有影響無影響動作發(fā)生現(xiàn)在完成時被動語態(tài)一般過去時被動語態(tài)對現(xiàn)在__4Readthepoem.Thenthinkofyourownsituationandwriteasimilarpoem.Lookat_________________________________Lookat_________________________________Lookat_________________________________You’dbetter_____________________________Lookat________________________________