一般现在时的被动语态, 其主要结构为: ★主语(动作接受者) + is / am / are + 动词的过去分词+ (by+ 动作执行者) Football is played in most countries in the world. 被动语态的句型总结如下: 肯定句: 主语 + be + 过去分词 + (by ~~). The boy is called Jack. 否定句: 主语 + be not+ 过去分词 + (by ~~). The baby is not looked after by his father. 一般疑问句: Be +主语 + 过去分词 + (by ~~)? Is King Lear written by Shakespeare? 特殊疑问句: 特殊疑词+ be + 过去分词 + (by ~~)? What is this kind of sweater made of? ★被动语态的用法: (1)要表达“被…” 、“受…”、“让…”、“遭…”之类的语义. The teachers are well respected. The child is well loved by people. (2)强调动作承受者. He is known far and wide. 他远近闻名. (3)不知道式没有必要指出动作的执行者. The room is cleaned every day. 房子每天都有人打扫. (4)为礼貌起见避免提及动作执行者. I wonder if I was allowed to introduce myself? 我是否可以做自我介绍? 本文来源：https://www.wddqw.com/doc/46be9e77ac45b307e87101f69e3143323868f57c.html