动作谁做的不知道，说出谁做的不必要 ； 接受动作者要强调，用被动语态最为妙 。 Thepromisehas been carried out. Anewlibraryis being builtnearourhouse. Is ChinesespokenbymanypeopleoutsideChina? Thecookis likedbyusall. 口诀一口诀二 宾变主，把“是（be ）”补； 动词跟，变过（去）分（词）； 时与数，“是”随主（语）； 时态随原句，莫变要记准 主语代词变宾格，成为by 宾( 语) 。 e.g.Theworkerswillcompletethestadium nextyear. Thestadiumwillbecompletednextyear (bythe workers). Thewriterwritessuchbooksforchildren. Suchbooksarewrittenforchildren(by thewriter). WelovetheParty. ThePartyislovedbyus. 口诀三 被动不离“be” 与“p.p.
