Unit 4 Discovering Useful Structures 课件-2022-2023学年高中英语人教版（2019）必修第三册

Unit 4 Space Exploration Discovering Useful Structures 课前准备：课本，学案。积累本，双色笔 Mystery creates wonder and wonder is the basis of man’s desire to understand — Neil Armstrong 2019新人教版 1 Describe space facts and efforts to explore space 1. Look at the following sentences and focus on the italicised infinitives. In pairs, discuss their functions and meanings. I trained for a long time to fly airplanes as a fighter pilot. As we all know, an astronaut needs to be healthy and calm in order to work in space. First of all, you must be intelligent enough to get a related college degree. Some scientists were determined to help humans realise their dream to explore space. On 12 April 1961 , Yuri Gagarin became the first person in the world to go into space. Prep for Grammar 后置定语 后置定语 目的状语 目的状语 目的状语 Summary: 1. 不定式的结构：____________。 2.分析上面的句子，动词不定式不仅可以用来表__________，还可以用来作_________，表_______。 to + do 目的 定语 修饰 Describe space facts and efforts to explore space 2. Find more examples from the unit. 1. Scientists work hard to find answers. 2. They make vehicles to carry brave people into space to find out the secrets of the universe. 3. However, some scientists were determined to help humans realise their dream to explore space. 4. America’s NASA space agency launched Voyager 1 on 5 September 1977 to study deep space. 5. These disasters made everyone sad and disappointed, but the desire to explore the universe never died. 6. China became the third country in the world to independently send humans into space in 2003. 目的状语 目的状语 定语 目的状语 定语 定语 Prep for Grammar Describe space facts and efforts to explore space 2. Find more examples from the unit. 7. This signalled one step further in China’s plan to establish a space station in the future. 8. More recently, China has sent Chang’e 4 to explore the surface of the far side of the moon to make measurements and observations. 9. Europe, the US, and China all have plans to further