初中英语外研版（2024）八年级下册（2024））Understanding ideas教课ppt课件

这是一份初中英语外研版（2024）八年级下册（2024））Understanding ideas教课ppt课件
册 次：八年级下册 学 科：英语（外研社版）Unit 5 Looking into natureUnderstanding ideas (语法学习)Review the story.Let’s retell.about the dinosaurabout the flowerabout the antsA层a window on the pasta key to unlock more secrets of natureReview the story.1. secrets2. Thanks to3. (always) changed4. 35 million / thirty-five million5. unknown6. ant7. window8. natureLet’s retell.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。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 sureJohn told his parentsMr Brown is interested in insects or birds.if / whetherthere is life in outer space.thathe wanted to be a scientist and study plants. if / whetherEmily wants to knowConnect the sentences with that, if or whether.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 / whetherthatif / whetherthatthatif / whetherA/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.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.A/B/C层TaskRead 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?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. 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. ExampleBy watching and listening carefully, scientists have discovered that whales use these sounds to talk to each other in the ocean.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.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. ExampleThis discovery teaches us that animals have smart ways to communicate. If we pay attention, we can learn many wonderful things about nature.Write your passage.SampleLet’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.HomeworkFurther polish your writing.A/B/C层感谢观看THANKS