Unit 5：Understanding ideas (语法学习) 课件 -2025-2026学年外研版英语八年级下册

该初中英语课件围绕八年级下册“Looking into nature”单元的宾语从句（that/if/whether引导）展开，通过复习恐龙、花、蚂蚁等自然主题故事，以retell活动回顾旧知，搭建“复习-引入-新授”学习支架，衔接前后知识脉络。 其亮点在于采用A/B/C分层设计和自然主题融合，结合鲸鱼交流、冥王星分类等案例，培养学生语言能力和思维品质，小组合作与写作任务提升学习能力。学生能在真实语境中运用语法，教师可实现差异化教学，提高教学效率。

册 次：八年级下册 学 科：英语（外研社版） Unit 5 Looking into nature Understanding ideas (语法学习) 1 Review the story. Let’s retell. about the dinosaur about the flower about the ants A层 a window on the past a key to unlock more secrets of nature Review the story. 1. secrets 2. Thanks to 3. (always) changed 4. 35 million / thirty-five million 5. unknown 6. ant 7. window 8. nature Let’s retell. B/C层 动词 动词 宾语 宾语从句：放在动词后面作宾语的句子 宾语从句 宾语从句 A/B/C层 Read and find. A/B/C层 However, thanks to a piece of amber, scientists now know that this idea is wrong. They also help us understand that life on earth has always changed. But the find proves that it did 35 million years ago. In the future, amber may also help us discover if other species have changed over time. Research shows that they are a completely new species. Scientists used to believe that ants came from the northern half of the earth. Who knows whether this piece of amber will tell us more secrets? Read and find. 表示肯定或陈述内容时，用that引导宾语从句。 表示“是否”这种不确定的概念时，用if或whether引导宾语从句。 5 A/B/C层 Connect the sentences with that, if or whether. A/B层 Connect the sentences with that, if or whether. Scientists aren’t sure if / whether there is life in outer space. John told his parents that he wanted to be a scientist and study plants. Emily wants to know if / whether Mr Brown is interested in insects or birds. A/B层 Scientists aren’t sure John told his parents Mr Brown is interested in insects or birds. if / whether there is life in outer space. that he wanted to be a scientist and study plants. if / whether Emily wants to know Connect the sentences with that, if or whether. C层 一般疑问句，表示“是否”，用if或whether引导 肯定句，表示肯定或陈述内容，用that引导 一般疑问句，表示“是否”，用if或whether引导 一般过去时 Complete the messages with that, if or whether. A/B/C层 Complete the messages with that, if or whether. if / whether that if / whether that that if / whether A/B/C层 1. What is Daniel’s question on the message board? 2. Why isn’t Pluto one of the planets in the solar system? 3. What can you learn from the messages? Read and answer. A/B层 1. What is Daniel’s question on the message board? Daniel saw that the museum missed Pluto in the model of the solar system. He wants to know if / whether this is a mistake. 2. Why isn’t Pluto one of the planets in the solar system? In 2006, scientists agreed that a true planet: (1) moves around the sun; (2) is round (or nearly round); (3) can clear things in its way. Pluto doesn’t meet the third point. 3. What can you learn from the messages? People's understanding of nature keeps changing. Read and answer. A/B层 1. What is Daniel’s question on the message board? 2. Why isn’t Pluto one of the planets in the solar system? Read and answer. C层 if / whether that if / whether that that if / whether 1. What is Daniel’s question on the message board? Daniel saw that the museum missed Pluto in the model of the solar system. He wants to know if / whether this is a mistake. 2. Why isn’t Pluto one of the planets in the solar system? In 2006, scientists agreed that a true planet: (1) moves around the sun; (2) is round (or nearly round); (3) can clear things in its way. Pluto doesn’t meet the third point. Read and answer. C层 if / whether that if / whether that that if / whether A/B/C层 Task Read the notice. Group work. Decide on one discovery and answer the questions. 1. What is the discovery? 2. Who made the discovery? 3. What’s amazing about it? 4. What can you learn from it? A层 1. What is the discovery? For hundreds of years, people believed that...; The discovery of... has changed old beliefs about...; By..., ... found / realised / saw that...; Research shows that... 2. Who made the discovery? By..., ... found / realised / saw that...; ... made an amazing discovery. 3. What’s amazing about it? It’s amazing that...; What’s amazing is that...; It proves that...; Research shows that...; ... unlock the secrets of nature. 4. What can you learn from it? It teaches us that...; I can learn that...; We should put more effort into... Group work. Decide on one discovery and answer the questions. B层 1. What is the discovery? For hundreds of years, people believed that...; The discovery of... has changed old beliefs about...; By..., ... found / realised / saw that...; Research shows that... Group work. Decide on one discovery and answer the questions. Example By watching and listening carefully, scientists have discovered that whales use these sounds to talk to each other in the ocean. C层 2. Who made the discovery? By..., ... found / realised / saw that...; ... made an amazing discovery. Group work. Decide on one discovery and answer the questions. Example In the 1960s, a scientist named Roger Payne studied humpback whales. He made an amazing discovery. Their sounds were special repetitive patterns, just like human songs. His research shows that whale songs can travel very far underwater. Whales use these songs to share information, find food and look for friends. Sometimes, many whales sing the same song, and the song can change over time. 3. What’s amazing about it? It’s amazing that...; What’s amazing is that...; It proves that...; Research shows that...; ... unlock the secrets of nature. C层 4. What can you learn from it? It teaches us that...; I can learn that...; We should put more effort into... Group work. Decide on one discovery and answer the questions. Example This discovery teaches us that animals have smart ways to communicate. If we pay attention, we can learn many wonderful things about nature. C层 Write your passage. A/B/C层 Sample Let’s check in pairs. Then share in class. A/B/C层 Evaluation criteria: • Introduce what the discovery is and who made it. • Describe what is amazing about it. • Explain what can be learnt from it. • Use the words and expressions from the reading passage and the Useful expressions. • Use object clauses correctly. Homework Further polish your writing. A/B/C层 谢谢观看 $