Whatcanyouseefromthefollowingsentences
1)Bythetimethetornadoended,morethan700peoplehadbeenkilled
2)CoghlantravelledbacktoCanadaafterhehadbeenburiedinTexas
过去完成时被动语态:动作在过去某一时刻之前已经完成,且谓语动词与发出这一动作的主语存在被动关系
句中常用by,before,until,when等词引导时间状语
过去完成时被动语态的肯定结构:hadbeen+过去分词
Theclassroomhadbeencleanedbeforetheteachercame
老师进来前教室就已经被打扫干净了
过去完成时被动语态的否定结构:hadnotbeen+过去词
Theclassroomhadn’tbeencleanedbeforetheteachercame
老师进来前教室还没被打扫干净呢
过去完成时被动语态的疑问句结构:had+主语+been+过去分词
Hadanewschoolbeensetupbytheendoflastyear
去年年底是建了一所新学校吗
Choosethecorrecttenseandvoicetocompleteeachsentence
Afterthehurricane,Mary___(see)thattheroofofherhouse________________(disappear)
She________(return)homeand______(find)allherfurniture_______________(ruin)bytheflood
sawhaddisappearedreturnedfoundhadbeenruined3
Arthurwassurprise