初中英语语法：被动语态概念：英语有两种语态，主动语态和被动语态。主动语态表示主语是谓语动词动作的执行者或发出者，被动语态表示主语是谓语动词动作的承受者。构成：被动语态由“助动词be+及物动词的过去分词”构成；一般进行完成现在am/is/are+p.pam/is/are+being+p.phave/has+been+p.p过去was/were+p.pwas/were+being+p.phad been+p.p将来shall/will+be+p.p-shall/will have been+p.p助动词be有人称、数及时态的变化； 含有情态动词的被动语态由“情态动词+be+及物动词的过去分词”构成被动语态的否定式是在助动词后加否定词not；而疑问式是将助动词移到主语前面即可Stamps can be used for sending letters. 邮票能用来寄信。He was asked to go to the meeting immediately. 他被要求立刻去参加这个
