寒假语法作文Unit 8讲义2025-2026学年沪教版英语八年级下册

八年级下册学习1 学生 日期 2026.2.5 时间 7-9 课题 八年级下册U8 学习（沪教新版） 语法+作文专项练习 一、八年级下册U8 重点语法：原因状语从句（Adverbial clauses of reason） 知识点 1：引导词 because, as, since 的用法 规则：原因状语从句用来解释事情发生的原因，通常由 because, as, since 引导。 · because：语气最强，用来回答 why 提出的问题，强调直接原因。 · There was a loud noise because a spaceship crashed in the forest.（有一声巨响，因为一艘宇宙飞船在森林里坠毁了。） · as / since：语气较弱，常放在句首，表示 “既然、由于”，引导的原因是大家已知的。 2. As it was too late to go outside, Tina and Tom decided to go and have a look the next day.（由于天太晚了不能外出，蒂娜和汤姆决定第二天去看看。） 2. Since no one else saw these aliens, I refuse to believe you.（既然没有其他人看到这些外星人，我拒绝相信你。） 配套选择题（3 题） 1. I didn't go to school yesterday ______ I was ill. A. because B. as C. since D. so 2.______ you are tired, you should have a rest. A. Because B. As C. So D. But 3.He didn't come to the party, ______ he had to finish his homework. A. because B. as C. since D. for 知识点 2：从句的位置 规则：原因状语从句可以放在主句之前，也可以放在主句之后。 · 放在句首时，通常用逗号与主句隔开。 · Because a spaceship crashed, there was a loud noise. · 放在句末时，通常不用逗号。 2. There was a loud noise because a spaceship crashed. 配套选择题（3 题） 1. ______ it was raining, we stayed at home. A. Because B. As C. Since D. All of the above 2.We didn't go to the park ______ it was raining heavily. A. because B. as C. since D. for 3.______ you are busy, I will ask someone else for help. A. Because B. As C. Since D. So 知识点 3：because of 的用法 规则：because of 是介词短语，后面接名词、名词短语或代词，不能接句子。 · The spaceship couldn't fly because of the damage.（宇宙飞船因为损坏而无法飞行。） · 对比：The spaceship couldn't fly because it was damaged. 配套选择题（3 题） 1. He was late for school ______ the heavy rain. A. because B. because of C. as D. since 2.She didn't go to work ______ she was ill. A. because B. because of C. as D. since 3.They didn't have a picnic ______ the bad weather. A. because B. because of C. as D. since 二、语法综合练习 第 1 题：单项选择题（15 题） 1.He didn't go to school yesterday ______ he had a bad cold. A. because B. because of C. as D. since 2.______ you are free, why not come and help me? A. Because B. As C. Since D. For 3.The sports meeting was put off ______ the heavy rain. A. because B. because of C. as D. since 4.I like swimming ______ it can make me strong and healthy. A. because B. because of C. as D. since 5.______ everyone is here, let's start the meeting. A. Because B. As C. Since D. For 6.She was late for the meeting ______ she missed the bus. A. because B. because of C. as D. since 7.We didn't go camping ______ the bad weather. A. because B. because of C. as D. since 8.He didn't pass the exam, ______ he didn't study hard enough. A. because B. because of C. as D. since 9.______ you don't know the answer, you can ask the teacher for help. A. Because B. As C. Since D. For 10.The old man can't walk ______ his leg was hurt. A. because B. because of C. as D. since 11.They didn't go to the zoo ______ it was closed. A. because B. because of C. as D. since 12.She was very happy ______ she got a good grade in the exam. A. because B. because of C. as D. since 13.We can't go out ______ the COVID-19 pandemic. A. because B. because of C. as D. since 14.______ you are new here, I will show you around the school. A. Because B. As C. Since D. For 15.He didn't eat anything ______ he was not hungry. A. because B. because of C. as D. since 第 2 题：填空题（10 题） 1. We didn't go out ______ (because / because of) the heavy rain. 2. He was late for school ______ (because / because of) he got up late. 3. ______ (Because / As / Since) you are tired, you should go to bed early. 4. The spaceship couldn't fly ______ (because / because of) the damage. 5. I didn't believe him ______ (because / as / since) no one else saw the aliens. 6. She was very sad ______ (because / because of) she lost her favourite toy. 7. We stayed at home ______ (because / because of) the bad weather. 8. ______ (Because / As / Since) it was too late, we decided to go home. 9. He didn't come to the party ______ (because / because of) he had to look after his little sister. 10. The children ran away in fear ______ (because / because of) the terrible noise. 第 3 题：句子改写（10 题） 1. He didn't go to school because he was ill.（用 because of 改写） 2. Because it was raining, we stayed at home.（用 as 改写） 3. Since you are busy, I will do it for you.（改为同义句） 4. The sports meeting was put off because of the heavy rain.（用 because 改写） 5. I didn't go to the cinema because I had seen the film before.（对划线部分提问） 6. He was late for work because he missed the bus.（改为同义句） 7. Because of his carelessness, he made a lot of mistakes.（用 because 改写） 8. As you know, I don't like coffee.（改为同义句） 9. Since no one is against the plan, we will carry it out.（改为同义句） 10. She didn't go to the party because she was not invited.（对划线部分提问） 三、作文指导：写一篇关于与鸟人相遇的短篇故事 写作思路（5 步模板） 表格 步骤 关键内容 例句 ① 故事开端 承接前文，描述到达着陆点 Liz and Gus finally reached the landing site and saw Captain Troy. ② 冲突出现 突然发生意外，引出鸟人 Suddenly, strange noises came from the sky. They looked up and saw bird people with wings flying towards them. ③ 发展互动 主角主动示好，建立联系 Liz wanted to make friends. She smiled and waved, and then started to sing a song in a beautiful voice. ④ 高潮解决 误会消除，达成和解 The bird people were no longer frightened. They landed and gave the humans some special gifts from their world. ⑤ 结尾升华 友谊建立，故事圆满 As a result, the people from the Earth and Bird World became friends! 好词好句 · 场景描写：Suddenly, ... / Strange noises came from ... / They looked up and saw ... · 互动描写：She smiled and waved. / He tried to communicate with ... / They exchanged gifts. · 情感表达：The children were frightened at first. / They felt happy and excited. / A new friendship was born. · 高分句型：Although they were different, they found a way to understand each other. / This meeting taught them that friendship can cross the stars. 提升作文的小技巧 1. 使用感官描写：加入声音（strange noises）、视觉（bird people with wings）等细节，让故事更生动。 2. 运用原因状语从句：如 They were friendly because they realized the humans came in peace.，提升语法层次。 3. 设计出人意料的情节：让鸟人并非充满敌意，而是带着和平的使命，使故事更有创意。 4. 检查语法：重点检查 because, as, since 的使用，确保原因状语从句正确。 优秀范文（3 篇，每篇约 100 词） 范文 1： The Meeting Liz and Gus finally reached the landing site and saw Captain Troy. Suddenly, strange noises filled the air. They looked up and saw bird people with colourful wings flying down. At first, the children were frightened. But Liz smiled and waved. Since the bird people saw she was friendly, they landed. They gave the humans shiny stones, and the humans gave them pictures. As a result, the people from the Earth and Bird World became friends! 范文 2： The Song of Peace Liz and Gus finally reached the landing site and saw Captain Troy. Suddenly, a shadow covered the sun. Bird people with large wings appeared. Because the humans didn't move, the bird people landed. Liz started to sing a soft song. As the bird people listened, they relaxed. They communicated through gestures and shared stories. Since they understood each other, a new friendship began. 范文 3： The Gift Liz and Gus finally reached the landing site and saw Captain Troy. Suddenly, the ground shook. Bird people emerged from the trees. At first, everyone was tense. But Gus held out a gift. Because the bird people saw it was a peace offering, they accepted it. They took the humans to their home in the treetops. Since they shared their world, the humans learned that we are not alone in the universe. 四、课后作业 一．语法填空。填写这节课刚学的since, because, as. Tina woke up at midnight. She looked out of her window and saw a yellow light in the sky. It suddenly dived towards the ground. She heard a noise and saw a red light. The next morning, Tina mentioned it to her brother Tom. "I'm sure something landed in the forest near the hills ①______ I heard a loud noise last night," she said. "Let's go and explore after school tonight." At 6:00 p.m., Tina and Tom reached the forest. They heard some voices speaking a strange language, so they hid behind some bushes and kept quiet. Then they saw an alien! It was tall, with a round head and a silver body. It was standing next to a long spaceship. The spaceship was damaged ②______ a crash. 二．完形填空（10 题，约 250 词） Imagine that you are walking in a forest when you ①______ a strange light in the sky. It dives towards the ground and there is a loud crash. You hide behind a tree and see a spaceship. ②______ you are curious, you decide to take a closer look. Suddenly, you hear a strange noise. You turn around and see a creature with wings! At first, you are ③______, but then you realize it is not hostile. It is making friendly gestures. ④______ you want to communicate, you take out a piece of paper and draw a picture. The creature seems to understand. It makes a sound that sounds like music. ⑤______ you are not afraid anymore, you step forward. The creature gives you a small, shiny object. You realize that this is not an enemy, but a visitor from another world. This experience teaches you that ⑥______ we are different, we can still find a way to connect. It also makes you wonder: are we really alone in the universe? 1. A. see B. saw C. are seeing D. were seeing 2. A. Because B. As C. Since D. For 3. A. happy B. frightened C. excited D. sad 4. A. Because B. As C. Since D. For 5. A. Because B. As C. Since D. For 6. A. even though B. because C. as D. since 7. A. because B. because of C. as D. since 8. A. because B. because of C. as D. since 9. A. because B. because of C. as D. since 10. A. because B. because of C. as D. since 作业 3：阅读理解（2 篇，每篇约 350 词） 阅读 1：Aliens Arrive! Tina woke up at midnight. She looked out of her window and saw a yellow light in the sky. It suddenly dived towards the ground. She heard a noise and saw a red light. The next morning, Tina mentioned it to her brother Tom. "I'm sure something landed in the forest near the hills because I heard a loud noise last night," she said. "Let's go and explore after school tonight." At 6:00 p.m., Tina and Tom reached the forest. They heard some voices speaking a strange language, so they hid behind some bushes and kept quiet. Then they saw an alien! It was tall, with a round head and a silver body. It was standing next to a long spaceship. The spaceship was damaged because of a crash. Suddenly, another alien appeared from the bushes in front of them. The children were frightened. But then Tom got a feeling at the back of his throat. He couldn't stop himself and coughed loudly. The aliens saw them both and made a terrible noise! The children ran away in fear. The next day, Tina and Tom told their parents about the strange creatures. "They were very ugly. They had some hair, but they didn't have any feathers," said Tina. "There was something written on the spaceship," said Tom. "It looked like this. I wonder what it means." He drew some lines on a piece of paper. Dad looked at them as if they were crazy. "Since no one else saw these aliens, I refuse to believe you. Now go to school!" The children spread their wings and flew to school together. Dad looked at the piece of paper with the strange marks on it. "It looks strange," he said, as he looked at the word "EARTH". 题目 1. Why was there a loud noise at midnight? A. Because a spaceship crashed in the forest. B. Because it was thunder. C. Because the neighbours were making noise. D. Because Tina was dreaming. 2. Why couldn't the spaceship fly? A. Because it was out of fuel. B. Because it was damaged because of a crash. C. Because the aliens didn't know how to fly it. D. Because it was broken by the children. 3. Why did the children run away in fear? A. Because the aliens made a terrible noise. B. Because the aliens looked ugly. C. Because the aliens chased them. D. Because Tom coughed loudly. 4. Why did the father refuse to believe the children? A. Because he thought they were lying. B. Because no one else saw the aliens. C. Because the story sounded too crazy. D. Because he didn't believe in aliens. 5. What is the twist at the end of the story? A. The children actually had wings and were aliens too. B. The father saw the aliens and believed them. C. The aliens came back and took the children away. D. The piece of paper was a map of the Earth. 阅读 2：The Bird People Liz and Gus had finally reached the landing site of their mothership. They were eager to find Captain Troy and return home. Suddenly, the sky darkened and strange noises filled the air. They looked up and saw a flock of creatures with large, colourful wings flying towards them. At first, they were frightened. The creatures landed nearby and stared at them with large, intelligent eyes. But Liz noticed they were not making any threatening moves. "They look curious, not hostile," she said to Gus. "Maybe they want to communicate." Liz took a step forward and smiled. She started to hum a soft tune. The bird people tilted their heads and listened. One of them stepped forward and sang a melody in return. Because they could understand the emotion in the music, a connection was made. The bird people took the humans to their treetop village. They showed them how they built their homes from branches and how they communicated through song. Since the humans were respectful and curious, the bird people shared their knowledge and gifts. By the time the humans left, a lasting friendship had been formed between the two worlds. 题目 1. What were Liz and Gus doing when they saw the bird people? A. They were looking for Captain Troy. B. They were building a new home. C. They were exploring a new planet. D. They were flying in their spaceship. 2. How did Liz know the bird people were not hostile? A. Because they didn't have any weapons. B. Because they were making friendly gestures and not threatening moves. C. Because they were singing a happy song. D. Because they were smiling at them. 3. How did the humans and bird people first communicate? A. They spoke the same language. B. They used sign language. C. They communicated through music. D. They used a translation device. 4. Why did the bird people share their knowledge and gifts with the humans? A. Because the humans were respectful and curious. B. Because the humans gave them gifts. C. Because they wanted to make a trade. D. Because they were afraid of the humans. 5. What is the main theme of the story? A. The importance of friendship and understanding between different beings. B. The dangers of exploring unknown planets. C. The power of music to connect people. D. The importance of following your instincts. 五、参考答案。 一、重点语法配套选择题答案 · 知识点 1：1.A 2.B 3.A · 知识点 2：1.D 2.A 3.C · 知识点 3：1.B 2.A 3.B 二、语法综合练习答案 · 第 1 题：1.A 2.C 3.B 4.A 5.C 6.A 7.B 8.A 9.C 10.A 11.A 12.A 13.B 14.B 15.A · 第 2 题：1.because of 2.because 3.As/Since 4.because of 5.because/as/since 6.because 7.because of 8.As/Since 9.because 10.because of · 第 3 题：1.He didn't go to school because of his illness. 2.As it was raining, we stayed at home. 3.Since you are busy, I will do it for you. / Because you are busy, I will do it for you. 4.The sports meeting was put off because it rained heavily. 5.Why didn't you go to the cinema? 6.He was late for work because of missing the bus. / He missed the bus, so he was late for work. 7.Because he was careless, he made a lot of mistakes. 8.As you know, I don't like coffee. / Since you know, I don't like coffee. 9.Since no one is against the plan, we will carry it out. / Because no one is against the plan, we will carry it out. 10.Why didn't she go to the party? 四、课后作业答案 · 作业 1：1.A 2.B 3.A 4.A 5.A 6.A 7.A 8.A 9.A 10.A 11.A 12.A 13.A 14.A 15.A · 作业 2：1.B 2.B 3.B 4.B 5.B 6.A 7.A 8.A 9.A 10.A · 作业 3：阅读 1：1.A 2.B 3.A 4.B 5.A；阅读 2：1.A 2.B 3.C 4.A 5.A 1 学科网（北京）股份有限公司 $