Unit 4 Period 5 Section B（3a-4c）（单元综合训练）-【金牌导学案】2025-2026学年八年级下册英语课时作业课件（人教版·新教材）

该初中英语课件围绕“自然奇观”主题，聚焦Unit 4综合训练，涵盖洞穴、深海等自然现象的词汇与阅读技能。课堂导入从自然奇观话题切入，衔接单元核心内容，通过完形填空、阅读理解等任务，搭建从词汇积累（如rock formations）到语篇理解的学习支架，帮助学生巩固前后知识脉络。 其亮点在于融合语言能力与思维品质培养，如完形填空通过语境辨析词汇（如“mysterious”“adapted”）提升语言运用能力，阅读理解分析深海探索逻辑锻炼推理能力，重点知识积累模块系统整理短语助力学习能力。学生能在真实语境中提升语言技能，教师可通过综合训练高效检测教学效果。

Period 5 Section B（3a-4c）（单元综合训练） 金牌导学案 Unit 4 The Wonders of Nature 1 一、完形填空。 Caves are some of the most interesting natural wonders on Earth. They are dark, . .1. ., and often very beautiful. Many caves have amazing rock . .2. . that have taken thousands of years to form. ( )1. A.boring B.mysterious C.dangerous D.simple B ( )2. A.formations B.paintings C.buildings D.furniture A Period 5 Section B（3a-4c）（单元综合训练） 2 One of the most famous caves is Mammoth Cave in the USA.It is the longest cave system in the world, with over 650 kilometres of passages that have been . .3. ..Inside the cave, the temperature remains cool all year round, . .4. . around 10—15 degrees. ( )3. A.measured B.explored C.attracted D.survived B ( )4. A.never B.seldom C.usually D.sometimes C Period 5 Section B（3a-4c）（单元综合训练） 3 Some caves are home to unique animals that have . .5. . to live in complete darkness. These creatures, like blind fish, often lose their eyesight and pigmentation over time. Exploring caves can be risky, so it's important to always go with an experienced guide and have the right . .6. ..However, the effort is worth . .7. .. ( )5. A.refused B.forgotten C.adapted D.failed C ( )6. A.curiosity B.equipment C.types D.ambition B ( )7. A.keeping up with B.coming up with C.putting up with D.getting along with C Period 5 Section B（3a-4c）（单元综合训练） When you step into a cave, it feels like . .8. . a different world. You can see . .9. . formations like stalactites（hanging from the ceiling） and stalagmites（rising from the floor）. Caves . .10. . us that there are still many mysterious places on our planet waiting to be discovered.#5 ( )8. A.leaving B.painting C.entering D.watching C ( )9. A.ugly B.man-made C.natural D.soft C ( )10. A.give B.leave C.make D.remind D Period 5 Section B（3a-4c）（单元综合训练） 重点知识积累（补全短语） 1. rock __________ 岩层 2. all year ______ 一年到头 3. _____ one's eyesight 失明 4. _____ time 随着时间的推移 5. step _____ 步入；走进 formations round lose over into Period 5 Section B（3a-4c）（单元综合训练） 6 二、阅读理解。 The deep sea is one of the least explored places on Earth. It starts about 200 metres below the ocean's surface, where sunlight cannot reach. This area is in permanent darkness and is extremely cold. Despite the harsh conditions, life exists here. Many deep-sea creatures produce their own light through a process called bioluminescence to attract prey or mates. The anglerfish, for example, has a glowing lure on its head to trick smaller fish. Period 5 Section B（3a-4c）（单元综合训练） 7 Exploring the deep sea is challenging for humans because of the immense water pressure. Special submarines called submersibles are built with strong materials to withstand the pressure and allow scientists to study this unique environment. We know more about the surface of the Moon than we do about the deep ocean floor. Scientists believe that there are millions of species in the deep sea that are still unknown to us, making it a true final frontier for discovery.#4 Period 5 Section B（3a-4c）（单元综合训练） ( )1. Where does the deep sea start? B A.At the ocean's surface. B.About 200 meters below the surface. C.About 100 meters below the surface. D.At the ocean floor. ( )2. What does the underlined word “harsh” mean in the second paragraph? C A.Mild and cool. B.Comfortable and safe. C.Difficult and severe. D.Bright and warm. Period 5 Section B（3a-4c）（单元综合训练） 9 ( )3. According to the passage, what is TRUE about bioluminescence? C A.It is a type of submarine. B.It is a process used by scientists. C.It is a way for creatures to produce light. D.It is another name for the deep sea. Period 5 Section B（3a-4c）（单元综合训练） 10 ( )4. What is the main purpose of the third paragraph? D A.To describe the beauty of the deep sea. B.To list all the animals living in the deep sea. C.To compare the deep sea with the Moon. D.To explain why and how we explore the deep sea. ( )5. Which is the correct structure of this passage? B A.&1& B.&2& C.&3& D.&4& Period 5 Section B（3a-4c）（单元综合训练） 11 重点知识积累（填空） 1. below the surface意为“ ____________”。 2. despite意为“ ______”，后面接 ______或 __________，引导 ______状语从句。 3. produce one's own light意为“ __________”。 在表面之下 尽管 名词 名词短语 让步 自己发光 Period 5 Section B（3a-4c）（单元综合训练） 12 三、配对阅读。 左栏是五种令人惊叹的自然奇观，右栏是七条关于它们如何形成的主要解释。请为每个自然奇观选择其最可能的成因；右栏有两项为多余项。 （　　）1. The Grand Canyon （USA） （　　）2. Uluru / Ayers Rock （Australia） （　　）3. Giant's Causeway （Northern Ireland） （　　）4. Zhangye Danxia Landform （China） （　　）5. Pamukkale Travertine Terraces （Turkey） A. This massive, reddish sandstone rock formation is what remains after millions of years of erosion wore away the surrounding softer rock. B．These stunning, colourful “rainbow mountains” were formed when different coloured sandstone and mineral deposits were pressed together over 24 million years and then uplifted and eroded by wind and rain. C．This deep, vast canyon was carved over millions of years by the relentless flow and erosion of a single powerful river cutting through layers of rock. D．These white, terraced pools are formed by flowing hot springs rich in calcium carbonate, which deposits the mineral as the water cools and evaporates, creating beautiful, stone-­like formations. E．This unique coastline of interlocking basalt columns was formed by the cooling and cracking of an ancient lava flow from a volcanic eruption. F．This spectacular underwater trench was formed by the collision of two tectonic plates, one sliding under the other. G．These vast and intricate limestone caves are decorated with formations （stalactites and stalagmites） created by mineral­-rich water dripping for millennia. C A E B D Period 5 Section B（3a-4c）（单元综合训练） 13 重点知识积累（汉译英） 1. 带电粒子 ________________ 2. 火山喷发 ________________ 3. 静电 _______________ 4. 闪电 ______________ 5. 浮游植物 _____________ 6. 甲烷气体 ____________ 7. 将……转化为…… __________________ 8. 腐烂的植物 _______________ charged particles volcanic eruption static electricity lightning bolts phytoplankton methane gas convert … into … decaying plants Period 5 Section B（3a-4c）（单元综合训练） 14 感谢聆听 15 $