Unit 4 语法专项 连词and, but, because课件 2025-2026学年人教版七年级英语上册

该初中英语课件聚焦新人教版七年级上册Unit4连词and（并列/顺承）、but（转折）、because（原因）的用法，通过“如何连接单词、短语或句子”的问题导入，分层次讲解各连词连接名词、形容词、句子等用法，结合即学即练和小技巧，构建从基础到应用的学习支架。 其亮点在于贴合单元主题设计情境化练习，通过分层训练（基础补全、中档匹配、提高补全短文）提升语言能力，易错点口诀与综合仿写（描述学科喜好）培养思维品质，学生能在实践中掌握连词使用，教师可借助系统结构提升教学效率。

教学课件 新人教版七年级上册Unit4语法精讲 语法专项复习——连词and, but, because XX中学 XX老师 1 01. 语法导入：连词的作用 04. 基础巩固与中档题型训练 02. 核心语法：and/but/because用法（讲解+小练） 03. 易错点汇总与突破 05. 提高篇：补全短文与改错题 08. 课后作业 06. 综合仿写：学以致用 07 课堂小结 目录 / CONTENTS 英语中如何连接两个单词、短语或句子？ 核心定义：连词是用来连接词、短语、句子，表达逻辑关系的词 本单元重点：3个高频连词and（并列/顺承）、but（转折）、because（原因） 例如： 句子 + and + 句子：I get up at 7:00, and I have breakfast at 7:30.（我 7 点起床，然后 7 点半吃早饭） 句子 + but + 句子：It’s sunny today, but it’s windy.（今天晴天，但是有风） 句子 + because + 句子：I stay at home, because it rains.（我待在家里，因为下雨了） 语法导入——连词的作用 基本含义：表示“并列/顺承”，译为“和、并且、然后” 核心功能：连接同类信息，让表达更简洁连贯 适用场景：描述学科、日常活动、事物特征等（贴合Unit 4主题） 关键词：同类、顺承、并列 核心语法1——and的用法（定义+功能） 用法说明：连接两个或多个同类名词、代词，前后词性一致 例句： a.I have math, English and PE on Tuesday.（连接名词：学科） b.Tom and Lily are my good friends.（连接代词：人名） 小技巧：连接3个及以上成分时，and放在最后一个成分前（A, B and C） 即学即练：用and连接下列单词 （1. pen, book, eraser 2. Lucy, Jim, Mike） and的用法——连接名词/代词 用法说明：连接两个描述同一人/事/物的形容词或副词 例句： a.Science is interesting and useful.（形容词：描述学科） b.She sings well and dances beautifully.（副词：描述动作） 注意：前后形容词/副词形式一致（原级、比较级保持统一） 即学即练：补全句子 （1. The film is ______ and ______ (fun, exciting) 2. He runs ______ and ______ (fast, far)） and的用法——连接形容词/副词 fun exciting fast far 连接动词短语（结构一致）： 例句：We like to play basketball and watch TV after school. 连接完整句子（重点规则）： 例句：I finish my homework at 7 pm, and I have dinner at 7:30. 规则：连接两个独立句子时，and前必须加逗号 即学即练：合并句子 （1. I like reading. I like writing. → ________________________________） and的用法——连接动词短语/句子 I like reading, and I like writing. 易错点1：重复主语（❌ I like apple and I like banana. ✅ I like apple and banana.） 易错点2：连接句子遗漏逗号（❌ He is tall and he is strong. ✅ He is tall, and he is strong.） 专项小练（3题）： a.My mother buys bread, milk ______ eggs for breakfast. b.She is kind ______ friendly to everyone. c.I go to school at 7:00, ______ my sister goes to school at 7:10. and的易错点+专项小练 and and and 基本含义：表示“转折”，译为“但是、然而” 核心功能：连接相反或对立的信息，形成对比 适用场景：表达学科喜好对立、事物特征矛盾等（贴合Unit 4） 关键词：相反、对立、转折 核心语法2——but的用法（定义+功能） but的用法——连接形容词/动词短语 连接形容词（意义对立）： 例句：Math is difficult but interesting.（难但有趣） 连接动词短语（喜好/动作对立）： 例句：She likes swimming but doesn’t like running. 技巧：后一个动词短语可省略重复的主语和助动词 即学即练：补全句子1. The shirt is cheap ______ beautiful. 2. He wants to play ______ has to finish homework first. but but but的用法——连接句子+易错点 连接完整句子（重点规则）： 例句：I have a new watch, but it doesn’t work. 规则：连接两个独立句子时，but前必须加逗号 易错点：遗漏逗号 ❌ I like cats but my brother likes dogs. ✅ I like cats, but my brother likes dogs. 即学即练：合并句子（1. English is easy. I don’t like it. → ______） English is easy, but I don’t like it. but的专项小练 •小练题目 ： a.It’s rainy outside, ______ we still want to go out. b.This book is thick ______ useful. c.He has a car, ______ he never drives it to work. d.I study hard, ______ I didn’t pass the test. but but but but 核心语法3——because的用法（定义+结构） 基本含义：表示“原因”，译为“因为” 核心结构：结果句 + because + 原因句（先讲结果，再讲原因） 核心规则： a.because后必须接完整句子（不能接单词/短语） b.英语中because和so不能同时使用 适用场景：解释学科喜好、日常选择的原因（贴合Unit 4） because的用法——例句+拓展 经典例句 a.I like history because it’s interesting. b.She doesn’t like physics because it’s too hard. 拓展：because引导的原因句可放句首（强调原因），后加逗号 例句：Because my teacher is kind, I like her class. 即学即练：造句（用“like/dislike + 学科 + because + 原因”结构） because的易错点+专项小练 易错点1：同时用because和so（❌ So I like PE because it’s relaxing. ✅ I like PE because it’s relaxing.） 易错点2：because后接短语（❌ He is late because the rain. ✅ He is late because it rains.） 专项小练： a.We didn’t go to the park ______ it was windy. b.______ she studies hard, she always gets good grades. c.I like weekends ______ I can sleep late. because Because because 三大连词易错点大汇总 连词 常见易错点 正确示例 and 1. 重复主语 2. 连接句子漏逗号 I like coffee and tea. / He reads a book, and she writes a letter. but 连接句子漏逗号 She likes red, but I like blue. because 1. 与so连用 2. 后接短语 I don’t eat meat because I don’t like it. 口诀：and并列加逗号，but转折别漏号，because原因不跟so，后接句子才达标 基础巩固题 :用and, but, because补全句子 I have Chinese _________ music on Wednesday. The movie is long _________ exciting. She likes dancing _________ her mom is a dancer. He has a map _________ he can’t find the way. We play football _________ basketball after school. I don’t like cold weather _________ it’s uncomfortable. Lily is young _________ she can play the piano well. They went to the zoo _________ saw many animals. Math is not easy, __________ I still work hard at it. I love my dog __________ it’s very loyal. and but because but and because but and but because 左栏： I have a new phone, She likes to study English We planned to go hiking, My favorite subject is music He is very tall, I don’t like spicy food, 右栏： A. because it can make me relaxed. B. but he doesn’t like playing basketball. C. and I often use it to listen to songs. D. because it’s too hot today. E. but I like Sichuan food a little. F. and she often practices speaking it. 中档匹配题: 用and, but, because连接成完整句子 C F D A B E 提高补全短文题: 用and, but, because补全短文 My School Day I like Wednesday best _________ we have art and PE that day. Art class is my favorite, ___________ it’s creative and fun. My art teacher is Miss Li, ______ she is very patient with us. I’m not good at drawing, ______ Miss Li always helps me. PE class is exciting _________ we can play games with classmates. Sometimes we have to run long distances, _________ it’s good for our health. I love Wednesday ______ it’s a day full of happiness and growth. because because because but and because because 易错点改错题: 找出下列句子中的错误并改正 I like math and I like science. She has a notebook but she doesn’t have a pen. So I don’t go to school because I’m ill. The story is short and it’s very moving. He likes playing football, but he likes playing basketball too. 改正：I like math and science. 无语法错误（原句逻辑和用词均正确） 改正：I don’t go to school because I’m ill.（去掉 So） 改正：The story is short but it’s very moving.（and 改为 but） 改正：He likes playing football, and he likes playing basketball too.（but 改为 and） 综合仿写题（学以致用） 根据提示，用and, but, because写5句话描述自己的学科喜好（参考模板） 提示词：favorite subject, difficult, interesting, like/dislike, because, and, but 模板示例：My favorite subject is English because it’s useful and interesting. 要求：每句必须包含至少一个目标连词，语义连贯 示例参考： I like Chinese because it’s easy and interesting. Math is difficult but I still like it. My favorite subject is PE because it’s relaxing and I can play sports with friends. I like music but I’m not good at singing songs. I don’t like history because it has too many facts and dates to remember. Science is difficult but it’s really interesting for me. I love art and English because they both let me express my ideas freely. 参考答案： 课堂小结 三大连词核心用法： and：并列/顺承（和、并且）→ 连接同类信息，句子间加逗号 but：转折（但是）→ 连接对立信息，句子间加逗号 because：原因（因为）→ 结果+原因，不与so连用 核心口诀： 并列用and，转折but来连， 原因because，so字不能见， 句子连句子，逗号放前面。 课后作业 用and, but, because完成8个句子（涵盖3个连词，各至少2句） 写一段短文（5-8句），介绍自己的周末安排，必须使用and, but, because 订正课堂错题，整理易错点笔记 教学课件 语法专项复习——连词and, but, because Thank you! 25 $