UNIT 7 Period 5 （Section B 3a-Self Check）教学详案

Period 5 （Section B 3a-Self Check）
设计说明
　　在复习完上节课所学知识后，利用一个猜谜游戏激发学生的兴趣，导入新课。呈现有关鲸的一些图片，引导学生通过看图讨论他们所知道的相关信息。还可以播放一些人类捕杀鲸的视频或保护鲸的公益广告。学生可以归纳出鲸更多的特点和生存现状。引导学生阅读3a中的单词和短语，并将它们填到表格中相关的问题后面。核对答案后，鼓励学生两人一组进行问答，要求学生用完整的句子回答，为后面的写作打好基础。在学生根据3a中的信息完成一篇关于鲸的说明文之后，分组制作海报，并选择部分学生展示所写的海报，让其他学生参与评价。
　　Self Check是检测学生对本单元重点语法的掌握情况，因此让学生独立完成活动之后，仅核对答案即可。
教学目标
　　1. 知识目标
　　（1）掌握单词：whale，oil，protection，huge。
　　（2）完成Self Check。
　　2. 能力目标
　　通过罗列事实及数据，初步学习说明文的写作。
　　3. 情感目标
　　教育学生关爱动物，关爱自然，保护我们赖以生存的自然环境。
重点难点
　　1. 重点：
　　（1）通过罗列事实及数据，初步学习说明文的写作。
　　（2）检测学生对形容词原级、比较级、最高级的掌握以及程度副词的运用，总结本单元所学的语法。
　　2. 难点：
　　说明文的写作。
教学准备
　　图片，多媒体课件。
教学过程
　　Step 1　Leading in
　　Retell the information about the pandas.
　　Step 2　Presentation
　　1. A guessing game.
　　They are huge animals.
　　They live in the sea.
　　They can jump high out of the water.
　　They are very clever and also very friendly.
　　What are they
　　Answer：Whales.
　　T：Yes，they’re whales. They’re huge. But humans catch them for meat，fat and oil. The government should make rules on whale protection to protect them.
　　Teach the new words：whale，huge，oil and protection. And check them.
　　Complete the words according to the Chinese meaning.
　　（1）鲸：whale
　　（2）油；食用油；石油：o il
　　（3）保护；保卫：protecti o n
　　（4）巨大的；极多的：hu ge
　　2. Show some pictures of whales and ask students to brainstorm as a class about everything they know about whales.
　　Write all their ideas about whales on the board without checking them.
　　3. Discuss the ideas that students disagree with or are surprised at as a class.
　　Step 3　Practice
　　1. Read the words and phrases in 3a.
　　2. Look through the questions in the chart. Make sure the students understand the questions well.
　　3. Students complete the chart with their partners. They can also add in their own ideas.
　　4. Check the answers.
　　Answers：（自上而下）（1）Huge；Some kinds have teeth
（2）Live in the sea
（3）Eat small fish and other sea life
（4）Jump high out of the water；Sing songs
（5）Humans catch whales for meat，fat and oil； Water pollution；Whale parts sold to make things like candles and soap
（6）Rules on whale protection；Learn more about whales；Stop putting rubbish into the sea
　　5. Have students ask and answer in pairs.
　　For example：
　　S1：What do they look like
　　S2：They are very huge，and some kinds have teeth.
　　6. Complete the following sentences according to the Chinese meaning.
　　（1）人类捕鲸是为了获取鲸的肉、脂肪和油。
　　Humans catch whales for meat，fat and oil.
　　（2）高高跃出水面。
　　Jump high out of the water.
　　（3）停止向海洋丢垃圾。
　　Stop putting rubbish into the sea.
　　（4）我们能如何保护它们？
　　How can we protect them
　　Step 4　Writing
　　1. Make students write a paragraph about whales and why they need to be protected. Use the information in 3a.
　　2. Remind students about the posters they saw （and made） about volunteer work in UNIT 2.
　　3. Have students work in pairs or small groups to make posters that can be put up in a school，library，or other places frequented by the public，showing the ways that people can help save the whales.
　　Step 5　Self Check
　　1. Work on Self Check 1.
　　2. Complete the chart.
　　Answers：
Adjectives Comparatives Superlatives
high higher highest
dangerous more dangerous most dangerous
long longer longest
popular more popular most popular
　　3. Work on Self Check 2.
　　Tell students to read the information，and then work by themselves. Check the answers.
　　Answers：1-b　2-c　3-a
　　4. Work on Self Check 3.
　　Circle the correct word and/or fill in the blank with the correct form of the word in brackets for each sentence.
　　Answers：1. many　2. much　3. lot，crowded
4. much，stronger
　　Step 6　Summary
　　In this lesson，we have learned：
　　1. New words：whale，oil，protection，huge.
　　2. Writing
当堂达标（见导学案“当堂达标”）
答案与解析：
Ⅰ. 1. oil　2. protection　3. huge　4. population　
5. dangerous　
Ⅱ. 1. more popular　由than可知应填比较级；popular是多音节单词，比较级形式是在其前加more。
2. more carefully　由句意可知，此处应用careful的副词形式carefully来修饰动词drives；由than可知应填比较级，carefully的比较级为more carefully。
3. the largest　由表示范围的短语in Canada可知应用最高级。
4. the most interesting　由表示范围的短语of all the activities可知应用最高级；interesting是多音节形容词，因此应填the most interesting。
5. the longest　由表示范围的短语in the world 可知应用最高级。
6. younger　由than可知应用比较级。
7. the taller　“the+比较级+ of the two”表示“两者之中较……的那一个”。
Ⅲ. 1. A　11+20=31，31应写作thirty-one，故选A。
2. D　由表限制范围的短语in a year可知应用最高级，days为可数名词复数，故选D。
3. A　many不能修饰比较级，因此可排除B、D两项；在比较结构中，为了避免重复，常用those代替前面提到的复数名词，故选A。
4. C　as... as sb. can意为“某人尽可能……”。句意为“你最好尽可能地多说英语”。
5. C　基数词读时从右至左第一个逗点前的数为thousand，第二个逗点前的数为million，且数词hundred，thousand，million等在表示具体的数字时，其后不能加s，因此排除选项A、B、D，选C。
Ⅳ. 1. in danger　2. putting，into　3. Water pollution　
4. huge rock　5. be protected　
Ⅴ. One possible version：
Dear Joe，
　　Our village is ancient but its mountains and rivers attract many tourists. The mountains are in different shapes. They look amazing. Of all the mountains，Mount Lingshi is the highest. It’s about 1，000 meters high. Few people in our village have climbed it. The rivers run quietly and the water in them is very clean. Shuiniu River is longer than any other river in our village and it’s about ten meters deep—the deepest of all the rivers in our village. Also，if you come to my village，you can enjoy the wonderful clean air.
Yours，
Helen
　　Step 7　Homework
　　1. Write a paragraph about how to protect endangered animals. Use the useful sentences in 3b.
　　2. Remember the words，phrases and sentences in this unit.
板书设计
UNIT 7　What’s the highest mountain in the world Period 5 （Section B 3a-Self Check）
whale　oil protection　huge be protected
教学反思