Goodquestion!Theansweristhereisnovoice(语态没有)。 Thesentenceiscorrectlywrittenthough。
Thereasonis“were”isactingasalinkingverb,linkingthesubject“they”tothecomplement“gone。 ” “Gone,”beingapastparticiple,actsasanadjective。
Hereisadiscussion,ifanyoneisi ,voicecannotexist。 Withintransitiveverbs,thereisnodoer。
Thereisonlyasubjectbeinglinkedtoacomplement。 Notethatwiththepassivevoice,thedoermaynotbestatedbecausethedoerisembeddedinaprepositionalphraseandprepositionalphrasesarenotrequiredtogrammaticallycompletesentences。
However,evenifthedoerofapassivevoicesentenceisnotstated,thedoerisstillimpliedtoexist。
Theabovesentencealsolookslikeitcouldbeinthepastperfecttensebecausethepastparticipleimpliesthatsomethinghasbeencompleted,butthisisclearlynotthecasebecausethepastperfecttenseisformedbycombiningthehelpingverbhasorhave(notthelinkingverbbe)withthepastparticipleofthemainverb。
Linkingasubjecttoapastparticiplecomplementwithalinkingverbisnotuncommon。 Itisaconvenientwaytoimpartacompletedideaonasubjectwithamodifier。
HereareacoupleexamplesfromaPinkFloydsongTwoSunsintheSunset: “Thesunisintheeasteventhoughthedayisdone。
…couldbethehumanraceisrun。 ”。