
/ 让学习更有效 新课备课备考 | 英语学科 / 让学习更有效 新课备课备考 | 英语学科 2025年人教新目标版九年级英语上册精讲精练 Unit 5 What are the shirts made of? 核心语法:被动语态中常见的介词 一、 核心概念回顾:被动语态 结构:be + 过去分词 (PP) 意义: 强调动作的承受者,而非执行者。 例句: 主动语态: People speak English all over the world. (人们在世界各地说英语。) 被动语态: English is spoken all over the world (by people). (英语在世界各地被(人们)使用。) 关键点: 当我们想说明动作是由谁完成的或通过什么方式完成的时,就需要借助介词来引出这个信息。 二、 被动语态中的三大核心介词 1. By 含义: 表示动作的执行者,即“被/由...(某人/某物)”。 用法: 用于引出人或具象的事物。 例句: The window was broken by the little boy. (窗户是被那个小男孩打碎的。) English is spoken by many people. (英语被很多人使用。) The song was written by a famous musician. (这首歌是由一位著名音乐家创作的。) 注意事项: 如果执行者是不言而喻的(如 people, someone, them 等),或者不明确、不重要,则通常省略 by 短语。 by 强调“是谁做的”。 2. With 含义: 表示使用的工具、手段或材料,即“用...(某种工具)”。 用法: 用于引出某种器具、器械或材料。 例句: The cake was made with eggs, flour and sugar. (这个蛋糕是用鸡蛋、面粉和糖做的。) The door was opened with a special key. (门是用一把特殊的钥匙打开的。) The field is covered with snow. (田野被积雪覆盖。) 注意事项: with 强调“用什么工具做的”。 区分 by 和 with: by 引出执行者(人或物)。 with 引出工具。 经典对比: The letter was written by me. (信是我写的。 - “我”是执行者) The letter was written with a pen. (信是用钢笔写的。 - “钢笔”是工具) 一句话中可能同时出现: The lock was opened by the thief with a wire. (锁是被小偷用一根铁丝打开的。) 3. Of 含义: 通常表示构成或材料的性质,常用于“be made”结构中。 用法: 用于说明某物由某种材料制成,且制成品中仍能看出原材料。 例句: The desk is made of wood. (这张桌子是由木头做的。 - 能看出木头材质) The bridge is made of steel. (这座桥是由钢材建造的。) 注意事项: 区分 be made of 和 be made from: be made of: 制成品中能看出原材料(物理变化)。 The paper is made of wood. (纸是木头做的。 - 纸里看不出木头?这里是个常见例外,需特别记忆) (更佳例子)The chair is made of bamboo. (椅子是竹子做的。 - 能看出竹子) be made from: 制成品中看不出原材料(化学变化)。 Paper is made from wood. (纸是由木材制造的。 - 看不出木头了) Wine is made from grapes. (葡萄酒是由葡萄酿造的。 - 看不出葡萄了) be made in: 表示“产于某地”。 This camera is made in Japan. (这个相机是日本制造的。) be made by: 表示“由...(制造商)制造”或“由某人制作”。 This cake was made by my mother. (这个蛋糕是我妈妈做的。) 三、 其他常见介词 除了以上三个,被动语态中还常与其他介词搭配,构成固定短语。 例句: be known to... (为...所知) He is known to everyone in our school. (他在我们学校人尽皆知。) be known for... (因...而闻名) Hangzhou is known for the West Lake. (杭州因西湖而闻名。) be filled with... (被...充满) The room was filled with smoke. (房间里充满了烟雾。) be interested in... (对...感兴趣) Sh ... ...
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