Unit3TheInternetDiscoveringUsefulStructures课件-高中英语人教版2.pptx

Unit3现在完成时的被动语态

现在完成时谓语：have/hasdone

1表示某个时间发生的或的动作对_______造成的_____________。Pastpresent过去已完成现在影响或结果e.g.1.Ihavejustopenedthedoor.现在完成时概念1：常用的时间状语有：◆常与不确定的时间状语连用，如:already,before,recently,lately,sofar,ever,just,yet,thesedays,uptonow,bynow,inthepast/last+一段时间,次数（once,twice...)等,表示“到目前为止”所发生的动作.(Thedoorisnotclosednow.）

2.表示开始，一直持续到的动作。过去现在现在完成时概念2：Thedoghaslivedheresinceitwasborn.Theboyhaslivedwiththedogforfouryears.

since:自从…后接过去的时间点/动作e.g.Ihavenotseenhimsincelastyear/wemetlastyear.for:后接一段时间，如threeyears,alongtime…e.g.Ihavenotseenhimforayear.AB常用的时间状语有：这本书我已经买了好多年了。Ihavehadthisbookforyears.

现在完成时的被动语态现在完成时被动语态have/hasbeendone现在完成时的被动语态bedonehave/hasdoneHowdoweformthepresentperfectpassivevoice?

现在完成时被动语态:主语+_________________+其他1.Much______________(write)aboutthewondersoftheWorldWideWeb.2.Peopleslives___________________(change)byonlinecommunitiesandsocialnetworks.3.Manypeople________________(help)bytheclub.4.Janslife______________________(improve)greatlybytheInternet.hasbeenwrittenhavebeenchangedhavebeenhelpedWhenisthepresentperfectpassivevoiceused?现在完成时被动语态have/hasbeendonehasbeenimproved

现在完成时的被动语态的结构肯定式：主语+have/hasbeendone否定式：一般疑问句：特殊疑问句：主语+have/hasnotbeendoneHave/Has＋主语＋beendone．．．？疑问词＋have/has＋主语＋beendone．．．？

句型转换

Changethesentencesintothepresentperfectpassivevoice.They’vebuiltakindofnewPCwithmorefunctions.AkindofnewPChasbeenbuiltwithmorefunctions.EXAMPLE↓

Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.Someonehaslostanidentitycard.Thesoftwarehasbeendownloadedtohelpmyphonebatterylastlonger.Anidentitycardhasbeenlost.

HaveyouconfirmedtheWi-Fipassword?Haveyoupressedthebuttonyettocopythefile?