資源簡介

Book 3 Unit 1 Nature in the balance
Reading 1
The Amazon rainforest: a natural treasure
一、教學目標
By the end of this section, students will be able to:
1. summarize the basic information about the Amazon rainforest;
2. master the technique of “making comparisons” to help readers understand a large figure;
3. evaluate the importance of the Amazon rainforest and the dangers it is facing.
二、教學重難點
1. To read and understand the documentary script;
2. To make comparisons when talking about a large figure.
三、教學過程
步 驟 教學活動 設計意圖 互動時間/模式
Pre-reading
Step 1 Students talk about the plants and animals they know about, which involves some features of certain plants and animals. If possible, the teacher can show some pictures to offer some clues. 激發興趣，定位學習起點，自然引出學習任務。 2’Individual Work
Step 2 The teacher has students recall their previous knowledge and experiences of documentaries. The teacher directs students’ attention to the title of the speech: The Amazon rainforest: a natural treasure as well as the illustrations around the text, and explains to students that the text is a documentary script. Students predict the main content of the documentary script according to the title and given information. 引導學生基于標題的細節與背景信息，預測文章主要內容，激發學生的閱讀興趣，為后續活動埋下伏筆。 3’Individual WorkGroup Work
While reading
Step 3 First readingStudents find the topic sentence of each paragraph by skimming the script and finish A1 on Page 4. During the process, the teacher can help students understand some new words and expressions. 幫助學生掌握閱讀策略，進行整體閱讀，抓住主題句，從而把握文章大意與行文思路。 5’Individual WorkClass Work
Step 4 Second readingThe teacher asks each student to read the text carefully again. Students locate detailed information of figures by scanning the speech and finish A2 on Page 4. (1)____ countries and one overseas regionaround (2)____ km2 of forestabout (3) ____ km in lengthmore than (4)____ plant speciesmore than (5)____ bird speciesover (6) ____ species of mammalsover (7) ____ of all the Earth’s oxygen producedabout (8) of the rainforest lost over the past 50 yearsWhile reading, students are encouraged to use a dictionary if they come across any new words. 進一步梳理細節信息，提取有關文章主旨的基本事實性信息，理清行文脈絡，加深理解本篇紀錄片腳本傳達的信息。 5’Individual WorkClass Work
Step 5 Third readingStudents read through Paragraph 3 and Paragraph 4, and get some detailed information as well as the structure of each paragraph using mind maps.During discussion, students realize the importance of the Amazon rainforest to plants as well as animals. 利用思維導圖引導學生完成對第3段和第4段細節內容的分析、梳理與歸納，使思維過程可視化。關注段落結構及銜接手段，更好地理解文章的內容邏輯。 8’Individual WorkClass Work
Step 6 Fourth readingStudents read the text again and then fill in the chart concerning the structure and main idea of the documentary script.Students summarize the script based on the chart above. While summarizing, students are encouraged to use the strategy of topic sentence at the beginning of each part. 理解文章的結構、大意以及關鍵細節信息。引導學生，有效利用關鍵信息，提煉主旨句，總結全文。 7’Individual WorkClass Work
Step 7 Fifth readingStudents read the text again and then in groups of four discuss the message conveyed by answering the following questions:1. What makes the Amazon rainforest a natural treasure according to the script 2. What is your answer to the question at the end of the script Support your opinion with information from the script or other sources.3. In the sentence “Yet there is one major danger to these irreplaceable plants and animals: us.” (Page 3, Lines 33–34), why does the author choose “us” instead of “human beings” 理解文章的寫作意圖。引導學生理性欣賞文本，并能用英語積極自信地表達觀點。 10’Individual WorkGroup Work
Step 6 Building the languageStudents consolidate the use of new words and phrases and finish B1 on Page 5. Check the answers together.The teacher explains the terms “prefixes” and “negative prefixes” to the students. Then the students work in groups to build new words with negative prefixes and finish B2 on the same page. 在新的語境中運用生詞，鞏固新知，加深對文本內容的理解。掌握構詞法，拓展詞匯儲備。 3’Individual WorkGroup Work
Homework1. Write a summary of the script based on the chart discussed in class.2. Finish the workbook. 2’
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