Units 5-8 语法精讲及例句▪配套补全对话＆高分作文范文 2025-2026学年人教版八年级英语下册

人教版八年级英语下册 Units 5-8 语法精讲及例句▪配套补全对话＆高分作文范文 Unit 5 Nature's Temper  过去进行时 一、核心语法与例句（带汉语）  1. 定义：表示过去某一时刻/某段时间正在进行的动作。 2. 结构： ▪肯定句：主语 + was/were + 现在分词 + 其他 ▪否定句：主语 + was/were + not + 现在分词 + 其他 ▪疑问句：Was/Were + 主语 + 现在分词 + 其他? 3. 标志词：then, at this/that time yesterday, at... last night 等 4. 例句： I was travelling on the train then. 那时我正坐火车旅行。 We were not shopping at this time yesterday. 昨天这个时候我们没在购物。 A fire was burning and a cat was sleeping. 火在烧着，一只猫在睡觉。（过去进行时铺叙背景） When my neighbour called, my family were having dinner. 当邻居打电话来时，我们一家人正在吃晚饭。 While I was waiting at the bus stop, three buses went by. 当我在车站等车时，三辆公交车开过去了。  二、补全对话 （主题：谈论过去的天气经历）  A: Hi, Tom! I called you at 8:00 last night, but no one answered. What were you doing then? B: Oh, I was watching the news about the typhoon on TV. It was really scary. A: Typhoon? I didn't notice that. Were you staying at home? B: Yes, I was. The wind was blowing strongly and the rain was beating against the windows. A: That sounds terrible. What about your parents? B: My mom was cooking dinner in the kitchen, and my dad was checking the house to make sure it was safe. A: I hope everyone in your family is okay now. B: Thanks! We are all fine. 三、作文范文 （主题：An Unforgettable Storm） An Unforgettable Storm     Last Saturday, I experienced a terrible storm. It started at around 7:00 p.m. I was doing my homework when the wind began to blow hard. My sister was playing with her toys in her room. My mom was cooking dinner in the kitchen, and my dad was reading a newspaper in the living room.      Suddenly, the lights went out. The rain was beating heavily against the windows. My mom lit candles and we sat together in the living room. We talked about our day and told stories to each other. At that moment, I felt so warm and safe with my family around me.       When the storm finally stopped, the sky became clear again. The storm was scary, but it also let me know how much my family loves me. I will never forget this experience.    Unit 6 Crossing Cultures  结果/条件/时间状语从句  一、核心语法与例句（带汉语）  1. so... that...（如此……以至于……） 结构：so + 形容词/副词 + that 从句 例句：The bus was so crowded that they had to wait for the next one. 这辆公共汽车如此拥挤，以至于他们不得不等下一辆。 句型转换：so... that... = too... to... / not... enough to... The girl is so short that she can't reach the top. = The girl is too short to reach the top. = The girl is not tall enough to reach the top. 2. such... that...（如此……以至于……） 结构：such + (a/an) + 形容词 + 名词 + that 从句 例句：Water is such an important substance that we cannot live without it. 水是如此重要的物质，以至于我们离开它无法生存。 3. unless（除非；如果不） 用法：引导条件状语从句，遵循“主将从现” 例句：I won't let you go unless you tell me the truth. 除非你告诉我真相，否则我不会让你走。 转换：unless = if... not You will fail unless you work hard. = You will fail if you do not work hard. 4. as soon as（一……就……） 用法：引导时间状语从句，遵循“主将从现” 例句：I will phone you as soon as I get home. 我一到家就给你打电话。 二、补全对话 （主题：谈论不同国家的文化习俗） A: Hi, Lily! I heard you went to Japan last month. Can you tell me some cultural differences there? B: Sure! In Japan, people bow as soon as they meet each other. It's a way to show respect. A: That's interesting. What about table manners? B: Oh, you shouldn't stick your chopsticks into the rice. It's such a rude thing that people will feel uncomfortable. A: I see. Are there any other rules I should know? B: Yes. You can't wear shoes inside the house. Unless you take them off, the host won't let you in. A: Thanks for telling me! I'll remember these when I go there one day. B: You're welcome. It's important to learn about different cultures before you visit.   三、作文范文 （主题：Different Cultures, Different Manners）  Different Cultures, Different Manners When we travel to different countries, it's important to know about their local manners. Different cultures have different rules.   In Japan, people bow as soon as they meet each other. They never wear shoes inside the house, because it's such an impolite thing that it will make the host angry. In Turkey, people don't kiss each other on the cheek unless they are good friends. In China, we usually shake hands when we meet others. Also, we should wait for the elders to start eating before we begin.   Learning about different cultures helps us get along with people from all over the world. If we respect their manners, we will have a good time wherever we go.    Unit 7 A Good Read 现在完成时（一）  一、核心语法与例句（带汉语） 1. 构成：have/has + 过去分词 肯定句：主语 + have/has + 过去分词 + 其他 否定句：主语 + haven't/hasn't + 过去分词 + 其他 疑问句：Have/Has + 主语 + 过去分词 + ...? 2. 两大用法： 影响性用法：动作发生在过去，对现在造成影响 例句：I have already had lunch. (I am full now.) 我已经吃过午饭了。（现在不饿了） 持续性用法：动作开始于过去，持续到现在 例句：He has lived here for ten years. 他住在这里已经十年了。（现在还住在这里） 3. 标志词：already, yet, ever, never, just, for, since 4. 易混辨析： have/has been to：去过（已回） 例句：I have been to Shanghai twice. 我去过上海两次。 have/has gone to：去了（未回） 例句：He has gone to the library. 他去图书馆了。 have/has been in：待在（持续） 例句：She has been in New York for a month. 她在纽约待了一个月了。 二、补全对话 （主题：谈论读过的书） A: Hi, Mark! Have you read any good books recently? B: Yes, I have. I have just finished The Adventures of Tom Sawyer. It's really exciting. A: Oh, I have never read that book. What's it about? B: It's about a boy named Tom Sawyer. He lives in a small town and has many adventures. A: Sounds interesting. Have you lent it to anyone else? B: No, not yet. I have kept it for only three days. Do you want to read it? A: Yes, please! I have been looking for a good book to read these days. B: Great! I'll bring it to school tomorrow. 三、作文范文 （主题：My Favorite Book） My Favorite Book I have read many books, but my favorite book is The Little Prince. I have read it three times since I first got it on my 10th birthday. The book tells the story of a little prince who travels to different planets. He meets many strange people, like a king who rules over nothing and a businessman who counts stars. Finally, he comes to Earth and meets a pilot. The story teaches us about love, friendship and what's really important in life. I have learned a lot from this book. It tells me that we should keep our childlike heart and care about the people we love. I think everyone should read this book at least once. Unit 8 Making a Difference  现在完成时（二） 一、核心语法与例句（带汉语） 1. for vs since（与现在完成时连用） for + 时间段：表示动作持续的时长 例句：I have lived here for ten years. 我住在这里已经十年了。 since + 过去的时间点/一般过去时的从句：表示动作开始的时间 例句：I have known him since 2010. 我从2010年就认识他了。 We have been friends since we met at school. 自从我们在学校认识，我们就一直是朋友。 2. 非延续性动词转换（重难点） 瞬间动词不能与 for/since 连用，需转换为延续性动词/状态短语 转换表： buy → have; borrow → keep; die → be dead; join → be in/be a member of; leave → be away 例句：He has been dead for 2 years. (√) He has died for 2 years. (×) 3. 现在完成时 vs 一般过去时 一般过去时：强调过去的事实，与现在无关（标志词：yesterday, last week, ago） 例句：I lost my key yesterday.（含义：昨天丢了，现在不知道有没有找到） 现在完成时：强调对现在的影响（标志词：already, yet, since, for） 例句：I have lost my key.（含义：现在钥匙还没找到，进不去门） 二、补全对话（主题：谈论做过的志愿者活动） A: Hi, Linda! I heard you have volunteered at the animal shelter. How long have you worked there? B: I have worked there for six months. I started volunteering last year. A: Wow, that's a long time. What do you usually do there? B: I feed the animals, clean their cages and play with them. I have taken care of more than 50 animals since I started. A: That's amazing! Have you ever adopted a pet from there? B: Yes, I have. I have had a cat named Mimi for three months. She was so shy when she first came, but now she's very friendly. A: That's wonderful. I want to volunteer there too. Can I join you next week? B: Of course! I'll take you there and show you around. 三、作文范文 （主题：Making a Difference） Making a Difference Volunteering is a great way to make a difference in the world. I have been a volunteer at the community center for two years. At first, I was nervous because I didn't know what to do. But the other volunteers were very friendly. I have helped the elderly people with their housework, taught kids to read and clean the park every weekend. Last month, we organized a book sale to raise money for the poor children in the village. We have raised over 1,000 yuan since the sale started. Volunteering has changed me a lot. It has taught me to care about others and work with different people. I know that even small actions can make a big difference. I will keep volunteering and help more people in the future. 学科网（北京）股份有限公司 $