Unit 7 The secret of memory Focusing on culture 同步分层作业 2026-2027学年沪教版初中英语八年级上册

Unit 7 The secret of memory Focusing on culture 分层作业 建议用时：30分钟 一、单词汉译英（Focusing on culture：树木的年轮 Tree rings） 1. 年轮 ____________ 2. 树 ____________ 3. 树干 ____________ 4. 气候 ____________ 5. 记录 ____________ 6. 生长 ____________ 7. 宽的 ____________ 8. 窄的 ____________ 9. 年龄 ____________ 10. 古代的 ____________ 11. 天气 ____________ 12. 砍 ____________ 二、短语汉译英（教材原短语） 1. 年轮 ____________ 2. 每一圈 ____________ 3. 一年的生长 ____________ 4. 宽的年轮 ____________ 5. 窄的年轮 ____________ 6. 弄清；查明 ____________ 7. 经历；穿过 ____________ 8. 事实上 ____________ 三、词形变换（写出下列形容词的副词形式） 1. wide → ____________ 2. deep → ____________ 3. slow → ____________ 4. real → ____________ 5. true → ____________ 一、单句填空（用括号内单词的正确形式填空） 1. Each ring ____________ (show) one year of growth. 2. A wide ring ____________ (mean) a good year for the tree. 3. Scientists ____________ (study) tree rings for many years. 4. The tree ____________ (grow) slowly in the cold year. 5. Tree rings can ____________ (tell) us about the climate. 二、根据汉语意思完成句子（每空一词） 1. 树的年轮记录着它的生长。 Tree rings ____________ the tree's ____________. 2. 宽的年轮意味着那一年温暖湿润。 A ____________ ring means a warm and wet year. 3. 科学家可以通过年轮了解过去的气候。 Scientists can ____________ ____________ about the past climate from tree rings. 4. 这棵树大约有五百年的历史。 The tree is about five hundred ____________ ____________. 5. 事实上，年轮还能告诉我们火灾的情况。 ____________ ____________, tree rings can also tell us about fires. 三、句型转换 1. The tree is about 500 years old.（对画线部分提问） ____________ ____________ is the tree? 2. Scientists study tree rings to learn about the climate.（对画线部分提问） ____________ ____________ scientists study tree rings? 3. Tree rings are very useful.（改为感叹句） ____________ ____________ tree rings are! 4. Tree rings record the climate.（改为一般疑问句） ____________ tree rings ____________ the climate? 5. The rings are easy to see.（改为否定句） The rings ____________ easy to see. 四、选词填空（年轮） 【rings, climate, wide, record, ancient】 1. Each tree has many ____________. 2. The ____________ of this area is warm and wet. 3. A ____________ ring shows a good year. 4. Tree rings ____________ the history of the tree. 5. These ____________ trees are over 1,000 years old. 五、情景补全对话（5个空，6个选项，1项多余） A. How old is it? B. What can we learn from them? C. Why are some rings wide? D. How do you count them? E. Is it difficult? F. What are tree rings? Student: Dr Wang, 1.____________ Dr Wang: They are the circles inside a tree trunk. Student: 2.____________ Dr Wang: We count them. Each ring is one year. Student: 3.____________ Dr Wang: This one is about 300 years old. Student: 4.____________ Dr Wang: A wide ring means the tree grew well that year. Student: 5.____________ Dr Wang: We can learn about the climate and even fires. 拓展提高（课内同源 + 课外同源） Passage1（课内同源：树木的年轮） 　　If you cut down a tree, you will see circles inside its trunk. These are tree rings. Each ring shows one year of the tree's life. / In a good year, with enough sun and rain, the tree grows well. The ring is wide. In a cold or dry year, the tree grows slowly, and the ring is narrow. / Scientists can learn a lot from these rings. They count them to find the age of the tree. They also compare wide and narrow rings to learn about the weather in the past. A series of narrow rings may mean several dry years. / Sometimes the rings keep other records too. A dark mark may show a fire. A small ring may show that insects attacked the tree. / Tree rings are a natural history book. Some ancient trees are more than 4,000 years old, and their rings tell the story of the climate for thousands of years. In fact, scientists use tree rings to check their information about the past. 任务一：单项选择 1.What does a wide ring show? A.A cold year. B.A good year with enough sun and rain. C.A fire. D.A dry year. 2.What can a dark mark in the rings show? A.A fire. B.Rain. C.Insects. D.Wind. 任务二：判断正误(T/F) 3.A narrow ring means the tree grew slowly. (　　) 4.Tree rings cannot tell us about the weather in the past. (　　) 任务三：简答 5.What do scientists use tree rings to check? _______________________________________________________________________________________________ Passage2（课外同源：冰芯里的记忆） 　　Trees are not the only things that keep a record of the past. In the coldest places on Earth, ice does the same job. / Snow falls year after year. Each year's snow becomes a new layer of ice. Scientists dig deep holes in the ice and pull out long columns. These are called ice cores. / Inside an ice core, there are tiny bubbles of old air. The air was trapped hundreds or even thousands of years ago. By studying the bubbles, scientists can find out what the air was like in the past. / Ice cores also keep dust and ash. A layer of ash may come from a big volcanic eruption. If scientists know when the volcano erupted, they can date the ice around it. / In 2020, scientists in Antarctica found ice about two million years old. “It is like a letter from the past,” one scientist said. “We are still learning to read it.” 任务一：单项选择 1.What is an ice core? A.A long column of ice from deep in the ice. B.A kind of snowball. C.A machine for measuring snow. D.A hole in a tree. 2.What can scientists find inside old air bubbles? A.Water. B.What the air was like in the past. C.Animals. D.Plants. 任务二：判断正误(T/F) 3.Each year's snow becomes a new layer of ice. (　　) 4.Scientists found ice about two million years old in 2020. (　　) 任务三：简答 5.What did one scientist compare the old ice to? _______________________________________________________________________________________________ 任务四：单元微写作 自然界的很多东西都记录着时间。请写一段话介绍年轮（或冰芯），不少于6句话。请写清它是什么、怎样形成、能告诉我们什么，并用上 record 和 climate。 _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ 参考答案 夯实基础 一、单词汉译英 1.ring 2.tree 3.trunk 4.climate 5.record 6.grow 7.wide 8.narrow 9.age 10.ancient 11.weather 12.cut 二、短语汉译英 1.tree rings 2.each ring 3.a year of growth 4.a wide ring 5.a narrow ring 6.find out 7.go through 8.in fact 三、词形变换 1.widely 2.deeply 3.slowly 4.really 5.truly 能力进阶 一、单句填空 1.shows 2.means 3.have studied 4.grew 5.tell 二、根据汉语意思完成句子 1.record; growth 2.wide 3.find; out 4.years; old 5.In; fact 三、句型转换 1.How; old 2.Why; do 3.How; useful 4.Do; record 5.aren't 四、选词填空 1.rings 2.climate 3.wide 4.record 5.ancient 五、情景补全对话 答案：1.F 2.D 3.A 4.C 5.B；多余项：E 拓展提高 Passage1 任务一：1.B 2.A 任务二：3.T 4.F 任务三简答：5.They use them to check their information about the past. Passage2 任务一：1.A 2.B 任务二：3.T 4.T 任务三简答：5.He compared it to a letter from the past. 任务四范文：Tree rings are a natural record of time. Every year, a tree grows a new ring inside its trunk. In a warm and wet year, the ring is wide. In a cold or dry year, it is narrow. Scientists count the rings to find the age of the tree. They also study the wide and narrow rings to learn about the climate in the past. A dark mark may even show a fire. Tree rings are like a history book, and they help us understand the world before we were born. 学科网（北京）股份有限公司 $