be+过去分词(如donegone)

　　1.一般现在时的被动语态构成：is/am/are+及物动词的过去分词Ourclassroomiscleanedeveryday.Iamaskedtostudyhard.Knivesareusedforcuttingthings.2.一般过去时的被动语态构成：was/were+及物动词的过去分词Anewshopwasbuiltlastyear.Dinosaureggswerelaidlonglongago.3.现在完成时的被动语态构成：has/have+been+及物动词的过去分词Thisbookhasbeentranslatedintomanylanguages.Manyman-madesatelliteshavebeensentupintospacebymanycountries.4.一般将来时的被动语态构成：will+be+及物动词的过去分词Anewhospitalwillbebuiltinourcity.Manymoretreeswillbeplantednextyear.5.含有情态动词的被动语态构成：情态动词+be+及物动词的过去分词Youngtreesmustbewateredoften.Yourmistakesshouldbecorrectedrightnow.Thedoormaybelockedinside.Yourhomeworkcanbehandedintomorrow.6.现在进行时的被动语态构成：am/is/are+being+及物动词的过去分词UncleWangismendingmybikenow.→MybikeisbeingrepairedbyTomnow.Theyareplantingtreesoverthere.→Treesarebeingplantedovertherebythem.7.不定式的被动语态：to+be+及物动词的过去分词Therearetwobookstoberead.→Therearetwentymoretreestobeplanted.8.过去完成时的被动语态：would+be+及物动词的过去分词Hesaidhewouldfinishtheworksoon.Hesaidtheworkwouldbefinishedsoonbyhim.