高三英语Unit2 Crossing limits 教学设计及教案

Sb: Gan Ying, a great explorer and ambassador of the Han Dynasty, took the route of the Silk Road over land to accomplish a mission given by the Han emperor. He reached many countries along the Silk Road, though he was not able to arrive at his estimated destination—Da Qin (the west Roman empire).
Sc: Zheng He, a national hero, was famous for his seven voyages across the Indian Ocean, which established China’s rule of the sea in 15th century.
Step Ⅳ While-Reading
Task one: Predicting according to the title (Top-down)
T: Please look at the title of the reading material (Reaching Out Across the Ocean) and guess who reached out across the ocean.
S: Maybe they were China and countries along the Indian Ocean.
T: Why did China reach out across the ocean?
S: They wanted to trade with western lands and show friendship to them.
Task two: Predicting according to the thesis sentence
T: Read the first paragraph carefully and answer the following questions.
Students read quickly and try to find information to answer the questions.
Questions:
1. What formed the foundation of mankind’s interest in exploration?
2. What was Columbus’s purpose of searching for the wealthy Asian lands?
3. Which ocean does the world “western ocean” refer to?
4. Guess who explored the Western Ocean before Columbus.
T: Now I will ask some students to answer these questions.
Sa: Trade and curiosity formed the foundation of mankind’s interest in exploration.
Sb: His purpose of searching was to seek treasure.
Sc: It referred to part of the Pacific Ocean west of Brunei and part of the Indian Ocean along the coast.
Sd: Many people explored the Western Ocean, among whom Zheng He was the most famous.
Task three: Predicting the main idea of the whole passage
T: Work in pairs and predict the main idea of the whole passage according to the title and the first paragraph.
S: My prediction is: The passage is mainly about the explorers from China and other lands who explored the Indian Ocean before Columbus.
Task four: Survey
T: Read paragraph 2 to paragraph 5 and answer the following questions.
Students read carefully and find the information to the questions.
1. In the Han Dynasty, who traveled over land to the East Roman Empire?
2. Between the Han and early the Tang Dynasty, Which part of Africa developed into the world trade centre?
3. During the Tang Dynasty which traveler wrote Record of My Travels?
4. Before the Song Dynasty which means of transport did Chinese travelers mainly use?
5. In the eleventh century, who made several voyages to the court of the Song Dynasty?
Keys:
1. In the Han Dynasty, Gang Ying traveled over land to the East Roman Empire.
2. Between the Han and the early Tang Dynasty, Swahili kingdoms and the islands off the African coast developed into the world trade centre.
3. During the Tang Dynasty Du Huan wrote Record of My Travels.
4. Before the Song Dynasty Chinese travelers mainly traveled over land.
5. In the eleventh century, the Africans made several voyages to the court of the Song Dynasty.
Task five: Generalize the main idea of each paragraph
T: Read paragraph 6 to paragraph 9 and generalize the main idea of each paragraph.
Students read paragraph 6 to paragraph 9 and try to get the main idea of each paragraph.
T: Since you have finished the task, I will call some students to tell which sentence showing the main idea of each paragraph.
S: In paragraph 6, the second sentence shows the main idea of this paragraph. From paragraph 7 to paragraph 9, the first sentences show the main idea of each paragraph.
Task six: Read and build the schema chart of the passage.
T: Read the whole passage again and build the schema chart as below.
Students read the whole passage and build the schema chart.
Schema chart
Title Reaching Out Across the Ocean
Thesis sentence Many great explorers made expeditions across the Indian Ocean long before Columbus, among whom Zheng He was the most prominent.
Main idea(before Zheng He) P2 China had contacts with countries along the Indian Ocean from the early time, and during ancient time explorers had begun to contact with each other.
P3 Between the Han and the early Tang Dynasty, Swahili kingdoms and the islands off the African coast developed into the world trade centre and attracted merchants from the world.
P4 During the Tang Dynasty, Du Huan, who traveled to many lands, wrote the book Record of My Travels.
P5 In the eleventh century, the Africans made several voyages to the court of the Song Dynasty.
Main idea(after Zheng He) P6 By the beginning of the fifteenth century the time was ripe for a grand meeting.
P7 In the years between 1405 and 1433, under the command of Zheng He, seven large treasure fleets sailed westwards on voyages of trade and exploration.
P8 Zheng He renewed relations with the kingdoms of the East African coast.
P9 The fleet made several expeditions before the exploration was stopped.
Step Ⅴ Post Reading
Task one: Questions and Answers
T: Look at Post-Reading part and answer questions of exercise one and two.
Sa: Traveling stories and trade made people know about far-away civilizations. Marco Polo’s stories inspired Christopher Columbus and other European explorers to search for sea routes to the distant and wealthy Asian lands. People of Han Dynasty knew about Africa through the mouth of merchants.

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