人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration教案及反思

这是一份人教版 (2019)选择性必修 第四册Unit 3 Sea Exploration教案及反思，共6页。
2019新人教高中英语选择性必修四
Unit3 Sea Exploration-Learning about Language公开课教案
Teaching aims：
By the end of this period, students will be able to:
1. identify the functions of infinitives.
2. practise using infinitives in different contexts.
3. express your own ideas using infinitives.
Teaching key and difficult points：
1.Help students to analyse the functions of infinitives in a real context and use infinitives properly.
2.Instruct students to learn how to use infinitives.
Teaching procedures:
StepⅠLead-in
Ask students to answer some questions based on the text in the part of Reading and Thinking.
1.Why have humans always been longing to explore the sea?
2.What is the aim of the Belt and Road Initiative?
Suggested answers:
1.To promote trade and satisfy their curiosity, humans have always been longing to explore the sea.
2.The aim of the Belt and Road Initiative is to encourage cooperation and trade across the historic Silk Road areas, and strengthen the bonds between China and the rest of the world.
StepⅡObserve and analyse
Find all the sentences containing infinitives in the reading passage. Then mark their functions.
Suggested answers:
1.To complete the great map of the world(As the subject) was a strong passion for the people of early civilisations.  
2.Marco Polo’s tales inspired European explorers to search for sea routes (As the object complement) from west to east. 
3.Here, merchants from China and many other places met to negotiate trade deals (As the adverbial), which also led to more awareness of each other’s cultures. 
4.To reach out across the sea (As the subject) remains a strong desire today. 
5.The aim of this initiative is to encourage cooperation and trade (As the predicative) across the historic Silk Road areas, and strengthen the bonds between China and the rest of the world.  
6.Trading has grown greatly in recent years, and will continue to do so (As the object) in years to come. 
7.In recent years,China has joined other nations on several expeditions to explore the Arctic(As the attributive). 
8.From a scientific point of view, there is an urgent need to study the Arctic(As the attributive) in order to understand climate change and its effects. 
9.... the need to trade(As the attributive) and the desire to enhance relationships(As the attributive) will drive China to reach out (As the object complement) across the sea far into the future. 
StepⅢ Practise using the infinitive
Activity 1 Join the words to make sentences using infinitives. Then decide the function of each infinitive.
1.He/encouraged me/participate in the surfing competition.
2.The storm/seems/be getting closer.
3.Magellan/was the first person/sail around the world.
4.The UN peacekeeping force/aims/maintain peace and prevent armed conflicts.
5.The crowd/stood/applaud/scientists/for their important ocean research work.
6.It is a good idea/tax/plastic bottles/so that people use them less.
7.The Jiaolong manned submersible/is said/be able/reach 7 km underwater.
8.It remains/be seen/whether or not his capsule can work.
Suggested answers:
1.He encouraged me to participate in the surfing competition. (OC)
2.The storm seems to be getting closer. (P)
3.Magellan was the first person to sail around the world. (Attr)
4.The UN peacekeeping force aims to maintain peace and prevent armed conflicts. (O)
5.The crowd stood to applaud scientists for their important ocean research work. (Ad)
6.It is a good idea to tax plastic bottles so that people use them less. (S)
7.The Jiaolong manned submersible is said to be able to reach 7 km underwater. (O;O)
8.It remains to be seen whether or not his capsule can work. (P)
Activity 2

Read the beginning of The Little Mermaid and use the proper forms of the verbs in brackets to fill in the blanks.
Far out in the ocean,where the water is as clear as glass,lives the Sea King. The ocean is too deep 　　　　(measure).We may imagine there is nothing except yellow sand under the sea,but actually it is not rare　　　　(see) the most unique flowers and plants　　　　(dance) in the fast-moving water.In the deepest spot of all stands the Sea King’s castle,which has walls of coral and a roof　　　　(form) of beautiful shells.The mother of the king,a wise woman who is proud　　　　(be) born into the royal family,takes care of his six daughters.Among the six sea-princesses,the youngest is the prettiest.Although she has delicate skin like a rose-leaf and eyes as blue as the deepest sea,she has no feet but a fish tail just like her sisters.The most common way for the princesses　　　　(play) all day long is 　　　　(swim) in the halls of the castle or among the flowers growing out of the walls,feeding and touching the fish　　　　(swim) up to their hands through the windows.They seem　　　　(not worry) about anything,except for the youngest,who... 
Suggested answers:
to measure; to see; dancing; formed; to have been;to play; swimming/to swim; swimming; not to worry
Activity 3 Read the beginning of The Little Mermaid once again and continue to write what will happen next.
They seem not to worry about anything except for the youngest, who___________________
Suggested answers:
They seem not to worry about anything except for the youngest, who wants to see what life is like on land. She swims all the way to the surface and sees a large ship. It travels towards her at great speed and terrifies her. She swims below the surface of the water and just manages to swim away from the big ship. She now realises that it is a scary world outside of the ocean, and she decides to stay with her family and friends under the sea.
Activity 4 Complete the news report below with the appropriate forms of the verbs in brackets.
Across northern Africa, the desert is steadily growing. Dry lands are spreading. But a bold project known as the Great Green Wall aims 1.　　　　(stop) the growth of the desert. The ambitious program includes plans 2.　　　　(help) protect and maintain resources and fight poverty. 
Farmers are learning 3.　　　　 (care) for their land and use water wisely. They are also planting millions of trees and crops. The Great Green Wall would cover 4.　　　　area more than 4,000 miles wide. The program receives support from the United Nations, the World Bank and other groups. 
The Great Green Wall’s trees provide a barrier 5.　　　　desert winds and help hold moisture in the air and soil, allowing crops 6.　　　　(grow).More resources will bring more jobs. “The goal is to create sustainable land management,” said Nora Berrahmouni, a forestry officer 7.　　　　works with the Food and Agriculture Organisation of the United Nations. 
Trees and crops have been planted in Senegal and Niger. An 8.　　　　(add) benefit of the Great Green Wall is 9.　　　　countries in the region are sharing information about which programs work and which don’t. Now, along with trees, 10.　　　　(idea) are taking root. 
Suggested answers:
1.to stop　2.to help　3.to care　4.an　5.against　6.to grow　7.who/that　8.added　9.that　10.ideas
StepⅣ Language use
Ask students to write a paragraph with any topic using infinitives and v.-ing form.
Suggested answers:
Recently, I have managed to become a more active learner. When I am reading a book or listening to my teacher, I try to forget what I have learnt before or what I think about the book or the person giving me the information and practise concentrating on the information itself. At the beginning, it was difficult to do so and I couldn’t help questioning the ideas I was reading or hearing. But now I have learnt to avoid listening to my inner voice all the time and sometimes I even argue with it. On the other hand, I also attempt to ask as many questions as I can. I have noticed that the answers to the questions have really helped me understand the topic a lot better.
StepⅤ Practice
Ⅰ.Rewrite the underlined parts using infinitives.

Suggested answers:
1.to help you keep track of
2.to record your steps, speed and distance
3.to enable you to stay hands-free
4.to make it comfortable to wear
Ⅱ.单句语法填空
1.Fascinated by the structural beauty of the Forbidden City as a painter, she is equally interested 　　　　(learn) more about Chinese philosophy. 
2.Von Wong hopes that his work will also help pressure big companies 　　　　(reduce) their plastic footprint. 
3.Millions of acres of wetlands were dried 　　　　(feed) and house the ever-increasing populations, greatly reducing waterfowl habitat. 
4.Our aim was　　　　 (see) if we could live, in some way, like real Parisians. 
Suggested answers:
1.to learn　2.to reduce　3.to feed　4.to see