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外研版（2019）英语选择性必修四《Unit 5 Into the unknown》Period One Starting out & Understanding ideas—Comprehending优质课ppt课件
Unit 5
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Nature is full of mysteries,even unexplained mysteries.In the face of mystery,we are excited,curious,eager to know everything.
大自然充满了奥秘，甚至是一些难解之谜。面对神秘，我们兴奋，我们好奇，我们想探 知一切。
人与自然——大自然的难解之谜
话题导入
One of the greatest mysteries on the Earth is the statues(雕像) standing on Easter Island1.Easter Island is one of the most remote islands on the Earth.It is in the southern Pacific Ocean,2,300 miles west of the coast of Chile and 2,500 miles southeast of Tahiti.
Who built these statues and why and how did they get there? Nobody knows the answer for sure，but many are trying to find it out.It has even been suggested that space aliens may have played a role regarding the statues.There are also other theories about them.
One theory suggests that Easter Island was occupied by Polynesian sailors，who traveled thousands of miles in their canoes(独木舟)，guided by the stars2 and the birds making flights out to look for food.They first arrived on the island in 400 AD.However，they were trapped by the current(洋流).
The Easter Islanders had their own system of writing，different from any other in the world.No other Pacific Islanders knew how to write.Who taught the Easter Islanders how to write，or did they develop their own system?
In brief，Easter Island continues to be one of the world’s greatest unexplained mysteries.
靓句运用于写作
1.We will play against the team coming from Hong-xing High School.
(2019·全国Ⅱ，书面表达)
2.I would be happy to see you at the welcome ceremony，dressed in traditional Chinese dress.(2019·江苏，书面表达)