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课件网) Space Exploration Discovering Useful Structures Unit 4 1. To know the basic rules of the infinitive. 2. To use it flexibly in different contexts. Unit 4 Space Exploration 子主题2：关注太空探索历史及成就 Period 3 Discovering Useful Structures Describe space facts and efforts to explore space Activity 1: Revise and answer What do you know about Yuri Gagarin On 12 April 1961, Yuri Gagarin became the first person in the world to go into space. to do Activity 2: Think and discuss in groups What are the functions of infinitive in a sentence Can you give some examples to show its functions to do Functions 1. I trained for a long time to fly airplanes as a fighter pilot. 2. As we all know, an astronaut needs to be healthy and calm in order to work in space. 3. First of all, you must be intelligent enough to get a related college degree. 4. Some scientists were determined to help humans realise their dream to explore space. 5. On 12 April 1961, Yuri Gagarin became the first person in the world to go into space. Activity 3: Recognise and analyse Look at the following sentences. Focus on the italicized infinitives and identify their functions by changing the parts with infinitive into clauses. 1. I trained for a long time to fly airplanes as a fighter pilot. I trained for a long time in order that I could fly airplanes as a fighter pilot. 2. As we all know, an astronaut needs to be healthy and calm in order to work in space. As we all know, an astronaut needs to be healthy and calm in order that he/she can work in space. 3. First of all, you must be intelligent enough to get a related college degree. First of all, you must be intelligent enough so that you could get a related college degree. Adverbial clause Adverbial clause Adverbial clause 4. Some scientists were determined to help humans realise their dream to explore space. Some scientists were determined to help humans realise their dream which was to explore space. 5. On 12 April 1961, Yuri Gagarin became the first person in the world to go into space. On 12 April 1961, Yuri Gagarin became the first person in the world who went into space. Restrictive attributive clause Restrictive attributive clause 1. I trained for a long time to fly airplanes as a fighter pilot. 2. As we all know, an astronaut needs to be healthy and calm in order to work in space. 3. First of all, you must be intelligent enough to get a related college degree. 4. Some scientists were determined to help humans realise their dream to explore space. 5. On 12 April 1961, Yuri Gagarin became the first person in the world to go into space. Adverbial Adverbial Adverbial Attribute Attribute Activity 4: Skim and find … and scientists work hard to find answers. They make vehicles to carry brave people into space to find out the secrets of the universe. More recently, China has sent Chang’e 4 to explore the surface of the far side of the moon to make measurements and … Skim ... ...
