TheFourthPeriodGrammarandWritingActiveandPassiveVoiceVoice语态,英语中语态分为主动语态及被动语态ActiveVoice主动语态Thestudentwroteasong
PassiveVoice被动语态bedoneAsongwaswrittenbythestudent
Changingasentencefromtheactivevoicetothepassivevoiceinvolves3steps:1
把主动语态中句子的直接宾语做为被动语态的主语
把原主动语态的主语改成宾格移到句末,用by连接(也可省略)
Changingtheverbinvolvesthreesteps:1
确定原句时态,改成相应的be动词时态;2
把原动词改为过去分词,放在相应的be动词时态后,3
检查新的动词和新的主语主谓是否一致We/design/thecar(s)FormingTensesofPassiveVerbsTenseSubjectAuxiliaryPastParticipleSingularPluralPresentThecar/carsisaredesigned
PresentperfectThecar/carshasbeenhavebeendesigned
PastThecar/carswasweredesigned
PastperfectThecar/carshadbeenhadbeendesigned
FutureThecar/carswillbewillbedesigned
FutureperfectThecar/carswillhavebeenwillhavebeendesigned
PresentprogressiveThecar/carsisbeingarebeingdesigned
Pastpr