现在完成时态被动语态

1.Theresultsoftheirexperimentshavealreadybeenpublished.2.Thepartyhasbeenplannedsincethenewyear.1.肯定式：have/has+been+及物动词的过去分词Theyhaven’tbeentoldaboutityet.2.否定式：_____________________+及物动词的过去分词。—Havehisbooksbeensoldout?—Yes.Soyoucan’tbuyonenow.3.一般疑问句形式：______________________+及物动词的过去分词。have/has+not+beenHave/Has+主语+beenHowmanyexperimentshavebeendonebythestudentsthismonth?4.特殊疑问句形式：疑问词+have/has+been+及物动词的过去分词。现在完成时的被动语态通常有以下两种情况：一、表示过去开始的被动动作一直持续到现在，常与之连用的时间状语有：for+一段时间，since+时间状语（从句），thesedays,sofar,uptonow,inthelast/pastfewyears等。e.g.1.ThisclasshavebeentaughtbyMr.Brownfortwoyears.

2.HisChinesehasbeenimprovedalotsincehecametoChina.

二、表示某被动动作对现在造成的影响或结果，常与already,yet,just,ever,never,recently等连用。

e.g.1.Thebikehasnotbeenrepaired

yet.2.Ihave

already

beenintroducedtoMr.Smith.注意：并不是所有动词都有被动语态

happen,takeplace,breakout,belongto,cost,last等不及物动词或词组无被动语态。

[误]GreatchangeshavebeentakenplaceinChinasince1978.[正]GreatchangeshavetakenplaceinChinasince1978.另：一些特殊动词,如borrow,finish,begin,buy,start,return,marry,open,join等

构成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，则需改换动词或时态。如：Mybrotherhashad(不能用hasbought)thisbikeforalmostfouryears.Howlonghasthisbookbeenbought?Howlongagowasthisbookbought?用所给（短语）动词的正确形式填空。1.Thechildren_______________(tell)manytimesnottogoneartheriver.2.Greatchanges__________________(takeplace)inourcountrysincethe2008OlympicGames.3.Thistopic_____________________(talkabout)fortwohours.havebeentoldhavetakenplacehasbeentalkedabout1.Inthelastfewyearsthousandsoffilms _____allovertheworld.A.haveproducedB.havebeenproducedC.areproducingD.arebeingproduced从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。2.Hissisterlefthomein1998,and _____since.A.hadnotbeenheardofB.hasnotbeenheardofC.hadnotheardof D.hasnotheardof3.IliketheseEnglishsongsandthey _____manytimesontheradio.A.taughtB.havetaughtC.aretaughtD.havebeentaught4.Igotcaughtintherain