Unit 4 Vocabulary in use(2a-2c) 课件2025-2026学年人教版八年级英语下册

Vocabulary in Use (Section B 2a-2c) Unit 4 The Wonders of Nature 1 能够梳理本单元中出现的反义词，掌握利用反义词对照的方法理解和记忆单词的策略。 能够掌握“How+ adj./ adv.”结构，并学会使用该结构询问数量、频率、速度等。 能够通过语篇练习词汇，并通过大数字和形容词的比较级了解贝加尔湖。 Match the words on the left with their opposites on the right. 2a ____ 1. below ____ 5. top ____ 2. common ____ 6. northern ____ 3. low ____ 7. risky ____ 4. dead ____ 8. survive A. safe E. unusual B. bottom F. living C. southern G. high D. above H. die D E G F B C A H 3 below common low dead top northern risky survive above unusual high living bottom southern safe die adj. adv. v. prep. n. common — unusual; low — high; dead — living; northern — southern; risky — safe low — high; below — above survive — die below — above top — bottom Categorize the words. below-above common-unusual low-high dead-living top-bottom northern-southern risky-safe survive-die Fill in the blanks using the opposite words. 1. It is ______ to wait for the traffic light to turn green, but it is ______ to walk across the road without looking. 2. Seeing a cat in the street is very ________, but seeing a wild tiger there is ________. 3. The kite is _______ the clouds, and the picture is ______ the sofa. 4. Without food and water, plants cannot ______; they will ______. safe risky common unusual above below survive die Read the examples and make more sentences using how and the words in the box. How far is it from your home to school? How heavy is a blue whale? How large is your country? How often do you exercise? 通过观察我们可以发现How后接的单词均为形容词或副词，即“How +adj./ adv.”。 询问路程或距离 询问重量 询问面积或规模 询问频率 How + adj. + be + subject? 询问人或物的属性、感受或状况 How + adv. + do(助) + subject + v.?询问动作的细节，包括进行方式、频率或时间 2b Read the examples and make more sentences using how and the words in the box. 2b long high deep old fast soon 1. ________________________________ how long How long is the Yellow River? how high 2. ________________________________ How high is Mount Tai? how deep 3. ________________________________ How deep is the Mariana Trench? 7 Read the examples and make more sentences using how and the words in the box. 2b long high deep old fast soon 4. ________________________________ how old How old is the Great Wall? how fast 5. ________________________________ How fast can a cheetah run? how soon reach; top 6. ________________________________ How soon will we reach the top of Mount Tai? 8 There are some Baikal seals swimming freely below the ice. What do you know about Lake Baikal? Lake Baikal is the deepest freshwater lake in the world. ... 贝加尔湖(Lake Baikal)，位于俄罗斯东西伯利亚南部，最深处达1637米(2015年)，是世界第一深湖、亚欧大陆最大的淡水湖。贝加尔湖是地球的“淡水仓库”与“活的地质演化实验室”，以极致深度、古老年龄、高特有物种与纯净水质，成为全球自然地标。 Think and Say Complete the passage with the correct forms of the words in the box. 2c deep survive wonderful surface dive Located in Siberia, Russia, Lake Baikal is one of the world’s most famous lakes. It is the ________ freshwater lake in the world. To reach the bottom, you must _______ 1,620 metres! It is also larger than most other lakes. Its _________ covers 31,500 square kilometres. That is bigger than the country of Belgium! Lake Baikal is cold most of the year. But over 1,200 different types of animals can still ________ in this environment. Today, the lake still attracts many curious travellers. After all, it is a great natural _________! 西伯利亚 贝尔加湖 淡水湖 占(一片面积) 比利时 不同种类的…… 吸引;招引 好奇的 旅行者 毕竟;终归 natural wonder自然景观 位于 deepest dive surface survive wonder 10 1. How deep is Lake Baikal? 2. How large is it? 3. What did the passage compare Lake Baikal with? Why? 4. Why do you think many travellers visit Lake Baikal? It is 1,620 metres deep. Its surface covers 31,500 square kilometres. It compared Lake Baikal with the country of Belgium because it is larger than most other lakes. Answer questions about Lake Baikal. First, it is the deepest and oldest freshwater lake in the world. Second, the scenery around the lake is beautiful in every season. located adj. 位于，坐落于 常用结构： be located in 坐落于，位于 1. Located in Siberia, Russia, Lake Baikal is one of the world’s most famous lakes. 贝加尔湖位于俄罗斯西伯利亚地区，是世界上最著名的湖泊之一。 e.g. Chaka Salt Lake is a beautiful lake located in Chaka Town in Qinghai, China. 茶卡盐湖是一座美丽的湖泊，位于中国青海的茶卡镇。 attract v. 吸引 attract the attention of ... 吸引……的注意 attraction n. 向往的地方；吸引力 tourist attraction 旅游景点 e.g. They hope that Hua Hua can help attract more visitors to Chengdu. 他们希望花花能帮助吸引更多游客来成都。 After a decade, his home was turned into a popular tourist attraction. 十年后，他的家变成了热门旅游景点。 2. Today, the lake still attracts many curious travellers. 如今，这座湖泊仍然吸引着许多好奇的游客。 be curious about ... 对……感到好奇 e.g. She is curious about everything and she loves to meet new people and listen to their stories. 她对一切都充满好奇，喜欢结识新朋友，听他们讲故事。 3. After all, it is a great natural wonder. 毕竟，它是一处伟大的自然奇观。 natural adj. 自然的；天然的；天生的 常用于句型It’s natural (for sb.) to do sth.中。 e.g. Without plants, the natural world would be very different! 如果没有植物，自然界将会大不相同！ Babies have a natural fear of falling. 婴儿本能地害怕跌倒。 It's not natural for a child of his age to be so quiet. 像他这个年纪的孩子如此安静不正常。 【语境应用】选择natural的汉语意思 A. 本能的 B. 自然的 C. 未经加工的 (1) There are lots of natural disasters (灾害) this year. _______ (2) This juice is 100% natural. _______ (3) It's natural to worry about your parents. _______ 【链接】nature n. 大自然，自然界 B C A 【链接】naturally【副词】自然地 Naturally , she wanted her child to grow up fit and strong. 很自然，她希望自己的孩子健康茁壮地成长。 I can 梳理本单元中出现的反义词，掌握利用反义词对照的方法理解和记忆单词的策略。 能够掌握“how+adj./ adv.”结构，用该结构询问数量、频率、速度。 通过语篇练习词汇，并通过大数字和形容词的比较级了解贝加尔湖 Review the new words of this part. Make up dialogues to talk about the wonders of nature. Use "how + adj./ adv." in your sentences. $