Unit1 Reading (II) 公开课教案
湖南省株洲市九方中学 宋洁
I. Learning objectives
By the end of the lesson, students will be able to:
1. understand the usage of the following words and expressions: a huge sea of, alive with, comparisonsplay a significant role in, including, variety, while, a number of, survive, in turn, impact;
2. use the above words and expressions in new situations;
3. understand the negative prefixes un-, dis-, in-/im-/il-/ir-, non-;
4. present figures by making comparisons with familiar places or objects.
II. Key competence focus
1. Understand some new words and expressions.
2. Use the new words and expressions in new situations.
III. Predicted area of difficulty
Use the new words and expressions in new situations properly and correctly.
IV. Teaching procedures
Step 1 Lead-in
T asks Ss to review the documentary script by completing a summary. T shows Ss the structure and some keywords to help them summarize the text.
T: Hello, everyone! In the first period of this unit, we’ve learned a documentary script about the Amazon rainforest. Today we’ll review the text, appreciate the language in it, discuss how to use some of the words and phrases, and practise using them in new situations.
T: Would you please summarize the text according to the following keywords?
• Size: the largest rainforest in the world; an area of around 6 million square kilometres
• Plant species: more than 40,000; different levels
• Species of birds and mammals: more than 1,300 species of birds and over 400 species of mammals; jaguars and the food chain
• Values: fixes carbon and produces over 20% of all the Earth’s oxygen; a treasure house of species
• Threats: 17% of the rainforest lost due to human activities
【设计意图:回归课本,教师给出语言支架,要求学生概括文章内容,帮助学生回忆前一日所学文章内容;培养学生的语言概括能力,为概要写作打下基础。】
Step 2 Group work
T assigns the 5 paragraphs of the text to 5 different groups.
T: Do you have any difficulties in reading the documentary script, including the words, phrases and sentences, etc? Now, we’ll work in groups to discuss and share our learning notes.
【设计意图:让学生出语篇的语言重难点,鼓励学生开展自主学习和小组合作学习,借助词典等工具书解决疑惑拓展新知,培养学生的学习能力,为下一步讲解语篇中重点语言知识做准备。】
Step 3 Language comprehension and extension
T asks Ss to present their difficulties on the blackboard and share their learning notes. During their presentations, T makes necessary extension.
T: Now, let’s welcome some students to share what they have got by studying individually and cooperatively.
1. Paragraph 1
(1) Welcome to the jungle, a huge sea of green alive with the sounds of animals. (page 2, line 1)
• A huge sea of: a lot of, plenty of
• Alive with: be full of things that are alive
T: Now, boys and girls, please translate the following sentences.
(2) As the largest rainforest in the world, it plays a significant role in maintaining the fine balance of the Earth’s ecosystem. (page 2, lines 2–3)
T: Can you guess the meaning of play a significant role? OK, let’s look at an example.
2. Paragraph 2
(1) The Amazon rainforest crosses into eight countries, including Brazil and Peru, and one overseas region of France, all on the South American continent. (page 2, lines 4–5)
T: Boys and girls, do you know the part of speech of including? What does it mean? What are its verb form and adjective form? Let’s look at some examples.
(2) The Amazon River, from which the rainforest gets its name, is close to 6,400 kilometres in length—roughly 100 kilometres longer than the Yangtze River. (page 2, lines 7–9)
• Analysis of the relative clause
T: What kind of relative clause is it? What is it introduced by? Can you give more examples?
• Presenting figures by making comparisons with familiar places or objects
T: In this sentence, we can learn the writing technique of presenting figures by making comparisons with familiar places or objects. While the reader may find a large figure too abstract to understand, making comparisons with familiar places or objects will help them gain a better understanding. Here are some expressions that can be used to make comp
arisons: the same size/length as …, more than/larger than/longer than …, as large/long as, twice/three times as large/long as …
T: The documentary script compares the size of the Amazon rainforest with that of China, and the length of the Amazon River with that of the Yangtze River. Can you find the the comparisons in the documentary script?
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