Unit 4 Natural Disasters Discovering Useful Structures 课件-2025-2026学年高中英语人教版必修第一册

该高中英语课件聚焦必修一Unit 4自然灾害主题下的定语从句教学，通过图片描述导入，先引导学生识别简单句中的定语，再以拆分合并简单句的方式搭建学习支架，帮助学生从已知过渡到定语从句的理解与运用。 其亮点在于紧扣语言能力培养，通过翻译练习、句子合并及短语积累提升语言理解与表达，结合思维品质发展，用表格归纳关系代词用法、特殊情况总结（that的使用场景）培养分析归纳能力。采用情境教学（灾难主题图片）和任务型活动（伙伴问答），学生能在主题情境中掌握语法，教师可借助现成练习与活动设计提高教学效率。

【版本：人教　册别：必修一】 Unit 4 Natural Disasters Discovering Useful Structures：Describe pictures of disasters Underline the attribute in the sentences 1. Strange things were happening in the countryside. 2. A smelly gas came out of the cracks. 3. Some people saw bright lights in the sky. 4. More buildings fell down. 5. All hope was not lost. 6. Fresh water was taken to the city by train, truck and plane. 7. The woman in the room is my mother. 8. People there are very kind to me. 9. The girl with a book in her hand is Mary. 10. He is a famous writer who comes from a small town. 1. A disaster is a sudden event that/ which usually causes great damage. 2. A disaster that/ which usually causes great damage is a sudden event. A disaster is a sudden event. A disaster usually causes great damage. 1. A typhoon is an extremely strong wind which/ that often happens in the Western Pacific Ocean. 2. A typhoon which/that often happens in the Western Pacific Ocean is an extremely strong wind. A typhoon is an extremely strong wind. A typhoon often happens in the Western Pacific Ocean. A tsunami is a very large wave that/which is often caused by an earthquake under the sea. A tsunami that/which is often caused by an earthquake under the sea is a very large wave. A tsunami is a very large wave. A tsunami is often caused by an earthquake under the sea. The baby who/that was rescued from the building was crying. The baby who/that was crying was rescued from the building. The baby was crying. The baby was rescued from the building. Children were painful. The children’s parents died in the earthquake. Children whose parents died in the earthquake were painful. The girl (who/whom) the soldier rescued yesterday is John’s sister. The girl is John’s sister. The soldier rescued her yesterday . 关系词 关系代词 所指代的先行词 在从句中所做成分 who 人 主语，宾语 whom 人 宾语 which 物 主语，宾语 that 人/物 主语，宾语 whose (人/物)的 定语 注意：做宾语可以省略 关系代词的用法 1. The Tangshan earthquake was a terrible experience that my great- grandma cannot forget. 2. The couple who live next to us volunteered to help after the volcano erupted. 3.The supplies which were provided to the disaster area were collected from around the country. 4. Mr Li is an architect whose designs for the new town have won praise. 5. A doctor with whom James used to work died in the 2016 earthquake in Ecuador. Translate the following sentences 1. The Tangshan earthquake was a terrible experience that my great- grandma cannot forget. 2. The couple who live next to us volunteered to help after the volcano erupted. Translate the following sentences 唐山大地震是我曾祖母无法忘记的可怕经历。 住在我们隔壁的那对夫妇在火山爆发后自愿去帮忙。 3.The supplies which were provided to the disaster area were collected from around the country. 4. Mr Li is an architect whose designs for the new town have won praise. 5. A doctor with whom James used to work died in the 2016 earthquake in Ecuador. Translate the following sentences 提供给灾区的物资是从全国各地调来的。 李先生是一位建筑师，他为新城所作的设计赢得了赞誉。 和詹姆斯曾经工作过的一名医生在2016年厄瓜多尔地震中去世。 1. Here are some of the people whose homes were destroyed by the typhoon. 2. The terrible shaking of the building woke up all the people who/that were asleep. 3. The next day, people put up shelters in the open air using anything that they could find. 这儿有一些家园被台风摧毁的人们。 建筑物剧烈的晃动惊醒了所有正在睡觉的人。 第二天，人们用他们能找到的任何东西在露天搭建了避难所。 4. Several days later, most of the buildings that/which had been damaged by the hurricane were repaired. 5. The injured boy whose mother was lost in the disaster was taken to the hospital. 6. The woman wrote a thank-you letter to the soldier by whom she was rescued. 7. Is this the young boy who/that saved several other students trapped under buildings? 几天后，大多数在飓风中受损的建筑物都被修复了。 那个在灾难中失去母亲的受伤男孩被送往了医院。 这位女士给救了她的那位士兵写了一封感谢信。 这就是那个救了几名被困在建筑物下的学生的小男孩吗？ 下列情况中，定语从句中关系代词一般用that而不用which： 先行词为all, everything, nothing, something, anything, little, much 等不定代词时。 2. 先行词被all, every, no, some, any, little, much等修饰时。 3. 先行词被序数词或形容词最高级修饰时。 4. 先行词被the only, the very, the same, the last修饰时。 5. 先行词既有人又有物的时候，只能用that。 Summary Learn more about relative pronouns Note: that 和 which 在指物的情况下一般可以互换，但在下列情况中，一般用that而不用which。  I am sure she has something (that) you can borrow.  I’ve read all the books that are not mine.  This is the first book (that) he has read.  This is the very book that belongs to him.  They talked of things and persons that they remembered. Starting Prompts Example Work with a partner. Take turns to ask each other about the pictures. Make sentences with restrictive relative clauses using that, which, who, whose, or whom. Who are the soldiers who…? Who is the man who…? Where is mother who…? Where is the city that…? A:What’s the rescue worker doing? B:She’s feeding the baby who survived the earthquake. Important phrases (P52) 1 volunteer to do sth 2 win praise 3 wake up 4 put up shelters 5 in the open air 6 be damaged / destroyed by 7 be taken to the hospital 8 write a thank-you letter 9 be rescued by 10 take turns to do something 11 survive the earthquake 自愿做某事 醒来；睡醒 搭建避难棚 在户外 受到……的破坏 / 毁坏 被送往医院 写一封感谢信 赢得称赞 被……拯救 轮流做某事 在地震中存活下来 $