Unit 2 Period2 Discovering Useful Structures（知识清单）英语人教版必修第二册

Unit 2 Wildlife Protection Discovering Useful structures Discovering Useful Structures——现在进行时的被动语态 一、语法概述——现在进行时的被动语态 要素 说明 示例 定义 表示此刻或现阶段正在被做的动作，强调“正在进行”和“被动”双重含义 African elephants are being hunted.（非洲象正在被猎杀） 结构 am/is/are + being + 过去分词 What measures are being taken?（正在采取什么措施？） 标志词 now, at the moment, right now, nowadays, these days, currently等 The bridge is being built at the moment. 二、核心结构——三种句式 句式 结构 例句 肯定句 主语 + am/is/are + being + 过去分词 The wetland is being destroyed.（湿地正在被破坏） 否定句 主语 + am/is/are + not + being + 过去分词 The animals are not being protected.（这些动物没有得到保护） 疑问句 Am/Is/Are + 主语 + being + 过去分词？ Are the trees being cut down?（树正在被砍伐吗？） 三、使用场景与功能 功能 说明 例句 强调此时此刻正在被做 强调说话时动作正在进行 The office is being painted right now.（办公室正在被粉刷） 强调现阶段正在被做 强调当前一段时间内的进行 More parks are being built in the city these days.（这个城市最近正在建更多公园） 表达正在进行的变化 强调事物正在发生变化 Living spaces for wildlife are being reduced.（野生动物的生存空间正在缩小） 四、现在进行时被动语态 vs. 一般现在时被动语态 核心区别：进行时强调“正在”，一般时强调“经常/一般情况”。 对比项 现在进行时被动 一般现在时被动 结构 am/is/are + being + done am/is/are + done 含义 正在被做（此刻或现阶段） 经常/一般被做（客观事实） 例句 The report is being written.（报告正在被写） The report is written in English.（报告是用英语写的） 【即学即练1——用所给词的适当形式填空】 1.The bridge ________ (repair) at the moment. 2.These animals ________ (protect) by the government now. 3.A new library ________ (build) in our city these days. 4.The plan ________ (discuss) by the committee right now. 5.More trees ________ (plant) in this area this spring. 【参考答案】 1.is being repaired（at the moment 与进行时连用） 2.are being protected（now 与进行时连用） 3.is being built（these days 与现阶段进行连用） 4.is being discussed（right now 与进行时连用） 5.are being planted（this spring 与现阶段进行连用，被动关系） 五、课本句型归纳 以下句型均出自课本练习，需重点掌握： 英文原句 中文翻译 结构分析 African elephants are being hunted. 非洲象正在被猎杀。 are + being + hunted What is being done to help them? 正在采取什么措施来帮助它们？ is + being + done（疑问句） What measures are being taken to help them? 正在采取什么措施来帮助它们？ are + being + taken（疑问句） My office is being painted. 我的办公室正在被粉刷。 is + being + painted The deer are being watched over by volunteers. 鹿正在被志愿者照看。 are + being + watched Living spaces for wildlife are being reduced. 野生动物的生存空间正在被缩小。 are + being + reduced 六、易错易混点归纳 （一）现在进行时被动语态 vs. 现在进行时主动语态 核心区别：主语是动作的执行者还是承受者。 对比项 主动语态 被动语态 含义 主语正在做某事 主语正在被做某事 结构 am/is/are + doing am/is/are + being + done 例句 The workers are building a bridge.（工人们正在建桥） A bridge is being built.（一座桥正在被建造） 例句 Hunters are killing elephants.（猎人正在猎杀大象） Elephants are being killed.（大象正在被猎杀） （二）被动语态中“being”不可省略 易错点：漏写 being，误用一般现在时被动。 例：✔ The office is being painted now.（正在被刷） ✘ The office is painted now.（现在被刷——不强调进行，也不自然） （三）get + 过去分词 也可表被动，但不能用于进行时 在口语中，被动结构可用 get + 过去分词 替换 be + 过去分词，但 get + 过去分词不能用于进行时态（即不能说 is getting built）。 结构 是否可用 例句 be + being + done ✅ The house is being built. get + done（进行时） ❌ ✘ The house is getting built. get + done（一般时） ✅ The house gets built.（口语中较少用） 七、即学即练 【即学即练1——用所给词的适当形式填空】 1.The report ________ (write) at the moment. It will be finished soon. 2.Look! The old temple ________ (repair) by the workers. 3.These days, many new houses ________ (build) in my hometown. 4.What measures ________ (take) to protect the endangered animals now? 5.The river ________ (pollute) seriously by the factory these days. 6.The wildlife in this area ________ (protect) by the government now. 7.Listen! The song ________ (sing) by the children in the next room. 8.The trees ________ (cut) down at the moment. We should stop them. 9.A new bridge ________ (construct) across the river these months. 10.More attention ________ (pay) to environmental protection nowadays. 【参考答案】 1.is being written（at the moment 与进行时连用） 2.is being repaired（Look! 与进行时连用） 3.are being built（these days 与进行时连用） 4.are being taken（now 与进行时连用，被动疑问句） 5.is being polluted（these days 与进行时连用） 6.is being protected（now 与进行时连用） 7.is being sung（Listen! 与进行时连用） 8.are being cut（at the moment 与进行时连用） 9.is being constructed（these months 与进行时连用） 10.is being paid（nowadays 与进行时连用） 【即学即练2——将下列主动语态改为被动语态】 1.The workers are building a new bridge over the river. → _______________________________________________________ 2.Hunters are killing the elephants for their tusks. → _______________________________________________________ 3.The government is protecting the rare animals. → _______________________________________________________ 4.The volunteers are watching over the deer. → _______________________________________________________ 5.The factory is polluting the river seriously. → _______________________________________________________ 【参考答案】 1.A new bridge is being built over the river (by the workers). 2.The elephants are being killed for their tusks (by hunters). 3.The rare animals are being protected by the government. 4.The deer are being watched over by the volunteers. 5.The river is being polluted seriously by the factory. 【即学即练3——完成短文填空】 用括号内所给动词的现在进行时被动语态填空。 In the wetland of my hometown, there are many different kinds of animals, including wild birds, fish, snakes, insects and so on. When I was in primary school, I often went there with my friends to watch the birds and study them. That was an interesting place for all of us. But things have begun to change in recent years. Small birds _______ (catch) with nets. Wild ducks _______ (sell) at food markets. Fish and snakes _______ (kill) for food in restaurants. And even worse, the wetland _______ (destroy). Some parts _______ (cover) with new houses. You can see rubbish everywhere. The wetland _______ (pollute) seriously every day. I am very worried about it. What can we do? 【参考答案】 1.are being caught（小鸟正在被网捕捉） 2.are being sold（野鸭正在被出售） 3.are being killed（鱼和蛇正在被杀） 4.is being destroyed（湿地正在被破坏） 5.are being covered（一些部分正在被房屋覆盖） 6.is being polluted（湿地正在被污染） 学科网（北京）股份有限公司1 / 6 学科网（北京）股份有限公司 $ Unit 2 Wildlife Protection Discovering Useful structures Discovering Useful Structures——现在进行时的被动语态 一、语法概述——现在进行时的被动语态 要素 说明 示例 定义 表示此刻或现阶段正在被做的动作，强调“正在进行”和“被动”双重含义 African elephants are being hunted.（非洲象正在被猎杀） 结构 am/is/are + being + 过去分词 What measures are being taken?（正在采取什么措施？） 标志词 now, at the moment, right now, nowadays, these days, currently等 The bridge is being built at the moment. 二、核心结构——三种句式 句式 结构 例句 肯定句 主语 + am/is/are + being + 过去分词 The wetland is being destroyed.（湿地正在被破坏） 否定句 主语 + am/is/are + not + being + 过去分词 The animals are not being protected.（这些动物没有得到保护） 疑问句 Am/Is/Are + 主语 + being + 过去分词？ Are the trees being cut down?（树正在被砍伐吗？） 三、使用场景与功能 功能 说明 例句 强调此时此刻正在被做 强调说话时动作正在进行 The office is being painted right now.（办公室正在被粉刷） 强调现阶段正在被做 强调当前一段时间内的进行 More parks are being built in the city these days.（这个城市最近正在建更多公园） 表达正在进行的变化 强调事物正在发生变化 Living spaces for wildlife are being reduced.（野生动物的生存空间正在缩小） 四、现在进行时被动语态 vs. 一般现在时被动语态 核心区别：进行时强调“正在”，一般时强调“经常/一般情况”。 对比项 现在进行时被动 一般现在时被动 结构 am/is/are + being + done am/is/are + done 含义 正在被做（此刻或现阶段） 经常/一般被做（客观事实） 例句 The report is being written.（报告正在被写） The report is written in English.（报告是用英语写的） 【即学即练1——用所给词的适当形式填空】 1.The bridge ________ (repair) at the moment. 2.These animals ________ (protect) by the government now. 3.A new library ________ (build) in our city these days. 4.The plan ________ (discuss) by the committee right now. 5.More trees ________ (plant) in this area this spring. 五、课本句型归纳 以下句型均出自课本练习，需重点掌握： 英文原句 中文翻译 结构分析 African elephants are being hunted. 非洲象正在被猎杀。 are + being + hunted What is being done to help them? 正在采取什么措施来帮助它们？ is + being + done（疑问句） What measures are being taken to help them? 正在采取什么措施来帮助它们？ are + being + taken（疑问句） My office is being painted. 我的办公室正在被粉刷。 is + being + painted The deer are being watched over by volunteers. 鹿正在被志愿者照看。 are + being + watched Living spaces for wildlife are being reduced. 野生动物的生存空间正在被缩小。 are + being + reduced 六、易错易混点归纳 （一）现在进行时被动语态 vs. 现在进行时主动语态 核心区别：主语是动作的执行者还是承受者。 对比项 主动语态 被动语态 含义 主语正在做某事 主语正在被做某事 结构 am/is/are + doing am/is/are + being + done 例句 The workers are building a bridge.（工人们正在建桥） A bridge is being built.（一座桥正在被建造） 例句 Hunters are killing elephants.（猎人正在猎杀大象） Elephants are being killed.（大象正在被猎杀） （二）被动语态中“being”不可省略 易错点：漏写 being，误用一般现在时被动。 例：✔ The office is being painted now.（正在被刷） ✘ The office is painted now.（现在被刷——不强调进行，也不自然） （三）get + 过去分词 也可表被动，但不能用于进行时 在口语中，被动结构可用 get + 过去分词 替换 be + 过去分词，但 get + 过去分词不能用于进行时态（即不能说 is getting built）。 结构 是否可用 例句 be + being + done ✅ The house is being built. get + done（进行时） ❌ ✘ The house is getting built. get + done（一般时） ✅ The house gets built.（口语中较少用） 七、即学即练 【即学即练1——用所给词的适当形式填空】 1.The report ________ (write) at the moment. It will be finished soon. 2.Look! The old temple ________ (repair) by the workers. 3.These days, many new houses ________ (build) in my hometown. 4.What measures ________ (take) to protect the endangered animals now? 5.The river ________ (pollute) seriously by the factory these days. 6.The wildlife in this area ________ (protect) by the government now. 7.Listen! The song ________ (sing) by the children in the next room. 8.The trees ________ (cut) down at the moment. We should stop them. 9.A new bridge ________ (construct) across the river these months. 10.More attention ________ (pay) to environmental protection nowadays. 【即学即练2——将下列主动语态改为被动语态】 1.The workers are building a new bridge over the river. → _______________________________________________________ 2.Hunters are killing the elephants for their tusks. → _______________________________________________________ 3.The government is protecting the rare animals. → _______________________________________________________ 4.The volunteers are watching over the deer. → _______________________________________________________ 5.The factory is polluting the river seriously. → _______________________________________________________ 【即学即练3——完成短文填空】 用括号内所给动词的现在进行时被动语态填空。 In the wetland of my hometown, there are many different kinds of animals, including wild birds, fish, snakes, insects and so on. When I was in primary school, I often went there with my friends to watch the birds and study them. That was an interesting place for all of us. But things have begun to change in recent years. Small birds _______ (catch) with nets. Wild ducks _______ (sell) at food markets. Fish and snakes _______ (kill) for food in restaurants. And even worse, the wetland _______ (destroy). Some parts _______ (cover) with new houses. You can see rubbish everywhere. The wetland _______ (pollute) seriously every day. I am very worried about it. What can we do? 学科网（北京）股份有限公司1 / 6 学科网（北京）股份有限公司 $