Unit4My Favorite Subjec语法(连词)讲解与练习-2026-2027学年人教版英语七年级上册

该初中英语讲义围绕Unit4核心语法点“连词and/but/because”构建知识体系，通过分类讲解（并列、转折、原因逻辑）、典型例句解析及易错点警示（如否定句用or、but与although不连用），清晰呈现三者用法脉络与内在区别，突出单元高频句型和考试重难点。 讲义亮点在于分层练习设计，涵盖选词填空（如“Math is difficult ______ very interesting”）、句型改写（用because合并句子）及汉译英等题型，精准训练语言运用能力。通过“同题对比例句”引导学生辨析逻辑差异，培养思维品质，基础题巩固用法，综合题提升长句表达，助力教师实施分层教学，支持学生自主复习与能力进阶。

Unit4 My Favourite Subject语法讲解与练习 连词and /but/because 超详细讲解 一、连词 and并列连词（表并列、顺承、递进） 核心逻辑：前后内容语义同向、无反差，翻译：和/又/而且 用法 1：连接并列名词（科目、物品） 1.I like English and music. 我喜欢英语和音乐。 解析：and 并列两个学科名词 English、music，作 like 的宾语。 2.We have math, geography and art on Wednesday. 周三我们有数学、地理和美术课。 解析：多个名词并列，最后两个中间加 and，固定结构 A, B and C。 3.My favourite teachers are Ms. Li and Mr. Wang. 我最喜欢的老师是李老师和王老师。 用法 2：连接并列形容词（描述学科特点） 1.History is interesting and useful. 历史有趣又实用。 解析：and 并列两个形容词 interesting、useful，共同作表语。 2.P.E. is relaxing and fun. 体育课轻松又好玩。 3.Science is difficult and boring for me. 科学对我来说又难又无聊。 用法 3：连接两个完整陈述句（顺承递进，句前加逗号） 1.My favourite subject is art, and it helps me draw nice pictures. 我最喜欢的科目是美术，而且它能帮我画出好看的画。 解析：前后两个独立句子，语义顺承，先讲喜欢美术，再补充美术的好处。 2.I have music every Friday, and I sing songs in class. 我每周五有音乐课，并且我会在课上唱歌。 易错特殊点：否定句不用 and，改用 or ❌ I don’t like math and geography. ✅ I don’t like math or geography. 我不喜欢数学和地理。 二、连词 but 转折连词（表对比、反差，翻译：但是、可是） 核心逻辑：前后内容意思相反、形成对比，有转折感 用法 1：连接两个形容词（描述同一科目的优缺点，单元高频句型） 1.Math is difficult but interesting. 数学很难，但是很有趣。 解析：difficult（难）和 interesting（有趣）形成反差，用 but 连接。 2.English is easy but a little boring. 英语很简单，但是有点无聊。 3.Geography is fun but hard to learn. 地理很有意思，但是很难学。 用法 2：连接两个完整陈述句（前后句意对立，逗号 + but） 1.I want to love history, but it is too boring. 我想喜欢历史，可是它太无聊了。 解析：前半句 “想喜欢”，后半句 “无聊”，语义转折。 2.Art is my favourite, but I don’t have art class today. 美术是我的最爱，但是我今天没有美术课。 3.He likes P.E., but he doesn’t like running. 他喜欢体育课，但是他不喜欢跑步。 必考易错规则：but 和 although不能同时出现在一句话 ❌ Although math is hard, but I still like it. ✅ Although math is hard, I still like it. ✅ Math is hard, but I still like it. 虽然数学很难，但我依然喜欢它。 三、连词 because 原因连词（表原因，专门回答 Why 提问，翻译：因为） 核心逻辑：用来解释动作、喜好的理由，两种标准句式 句式 1：主句在前，because 引导原因从句（最常用） 1.My favourite subject is P.E. because I love playing sports. 我最喜欢体育课，因为我热爱运动。 拆解：主句（我最喜欢体育课）+ because +原因(我爱运动),解释喜欢体育的理由。 2.She likes art because she loves drawing. 她喜欢美术，因为她热爱画画。 3.I don’t like math because it is too difficult. 我不喜欢数学，因为它太难了。 4.We love music because it makes us relaxed. 我们喜欢音乐，因为它让我们放松。 句式 2：Because 放句首，原因从句在前，主句前加逗号 1.Because geography tells us about the world, I like it best. 因为地理让我们了解世界，所以我最喜欢它。 2.Because science is full of new things, it’s my favourite. 因为科学充满新鲜事物，所以它是我的最爱。 课本标准问答模板（考试必背） —Why do you like English? —Because it’s easy and interesting. — 你为什么喜欢英语？— 因为它简单又有趣。 —Why doesn’t he like history? —Because it’s boring. — 他为什么不喜欢历史？— 因为它很无聊。 致命易错点：because（因为）和 so（所以）绝对不能连用 ❌ Because art is beautiful, so I like it. ✅ Because art is beautiful, I like it. ✅ Art is beautiful, so I like it. 因为美术很美，所以我喜欢它。 四、三者同题对比例句（清晰区分逻辑） 给同一个句子框架，换连词，语义完全不同： 1.I like art and music. 我喜欢美术和音乐。（并列，两个都喜欢） 2.I like art, but I don’t like music. 我喜欢美术，但是我不喜欢音乐。 （转折，二者喜好相反） 3.I like art because it’s beautiful. 我喜欢美术，因为它很美。 （说明喜欢美术的原因） 五、综合长句进阶例句 1. My favourite subject is English, and it is easy for me, but my deskmate thinks it’s hard because he can’t remember new words. 我最喜欢的科目是英语，它对我来说很简单，但是我的同桌觉得很难，因为他记不住新单词。 解析：同时用到 and 顺承、but 转折、because 说明原因，综合考试常考长句。 2. I have math and history on Monday, but I don’t like math because its problems are too difficult. 周一我有数学和历史课，但是我不喜欢数学，因为它的题目太难了。 【巩固练习】 一、选词填空（and /but/because） 1.I like geography ______ it can tell me many places around the world. 2.Math is difficult ______ very interesting, so I love it. 3.We have art, music ______ P.E. every Friday afternoon. 4.—Why do you like science? —______ it has many fun experiments (实验). 5.English is easy for me, ______ Chinese is a little hard. 6.My favorite teacher is Miss Wang, ______ she always helps me with my lessons. 7.I don’t like history ______ it is boring and long. 8.P.E. is relaxing ______ it makes me strong. 9.He wants to study art well, ______ he has no time to draw pictures. 10.I have two new subjects this term: physics ______ politics. 11.—Why doesn’t your brother like math? —______ there are too many difficult problems. 12.The subject is useful, ______ few students like it. 13.I read books ______ listen to music after school every day. 14.She likes drawing, ______ she can’t draw well. 15.I love Friday ______ we don’t have math class that day. 二、单项选择 1.I like English ______ it’s fun. A. and B. but C. because D. so 2.Math is hard ______ I still enjoy it. A. and B. but C. because D. or 3.We have Chinese, math ______ geography on Monday. A. and B. but C. because D. so 4.—Why do you like music? —______ it can make me relaxed. A. And B. But C. Because D. So 5.He likes art, ______ he doesn’t have art lessons today. A. and B. but C. because D. so 6.______ history is boring, I don’t like it. A. And B. But C. Because D. So 7.Although P.E. is tiring, ______ I love it. A. but B. / C. because D. so 8.I don’t like math ______ science. A. and B. but C. or D. because 9.The subject is useful, ______ many students dislike it. A. and B. but C. because D. so 10.She learns drawing ______ singing after class. A. and B. but C. because D. so 11.______ I get up early, I can have time to read English. A. Because B. So C. But D. And 12.Science is interesting, ______ it has lots of hard words. A. and B. but C. because D. so 13.I like Friday ______ we have no classes in the afternoon. A. and B. but C. because D. so 14.He likes all subjects ______ math. Math is too hard for him. A. and B. but C. because D. or 15.Because art is beautiful, ______ I like it best. A. so B. but C. / D. and 16.My favorite subjects are English ______ P.E. A. and B. but C. because D. so 17.—Why does she stay after school? —______ she needs to finish her geography homework. A. And B. But C. Because D. So 18.The story is short ______ very meaningful (有意义的). A. and B. but C. because D. so 19.We can read books ______ talk with classmates in the library. A. and B. but C. because D. so 20.I want to learn history well, ______ I can’t remember the dates. A. and B. but C. because D. so 三、句型改写 1.I like English. It’s easy.（用 because 合并句子） __________________________________________________ 2.Math is difficult. I like it very much.（用 but 合并句子） __________________________________________________ 3.We have music. We have art on Wednesday.（用 and 合并句子） __________________________________________________ 4.He doesn’t like geography. It’s boring.（用 because 合并句子） __________________________________________________ 5.History is useful. Many students think it is boring.（用 but 合并句子） __________________________________________________ 6.She likes Friday. She has P.E. on Friday.（用 because 合并句子） __________________________________________________ 7.The class is fun. It has much homework.（用 but 合并句子） __________________________________________________ 8.I read books. I listen to music every evening.（用 and 合并句子） __________________________________________________ 9.Although science is hard, I love it.（去掉 although，用 but 改写） __________________________________________________ 10.Because it’s relaxing, I love P.E.（调整语序，主句放前面） __________________________________________________ 四、汉译英 1.我最喜欢美术，因为我喜欢画画。（because） __________________________________________________ 2.数学很难但是很有用。（but） __________________________________________________ 3.周一我们有语文、数学和体育课。（and） __________________________________________________ 4.她不喜欢历史，因为它太枯燥了。（because） __________________________________________________ 5.英语很简单，但是我的同桌觉得很难。（but） __________________________________________________ 6.我喜欢音乐和体育。（and） __________________________________________________ 7.为什么你喜欢地理？因为它能让我了解世界。（because） __________________________________________________ 8.科学很有趣，但是有很多难记的单词。（but） __________________________________________________ 9.周五我很开心，因为下午没有数学课。（because） __________________________________________________ 10.我喜欢读书，也喜欢课后听音乐。（and） __________________________________________________ Keys 一、选词填空 1.because 2.but 3.and 4.Because 5.but 6.and 7.because 8.and 9.but 10.and 11.Because 12.but 13.and 14.but 15.because 二、单项选择 1.C 2.B 3.A 4.C 5.B 6.C 7.B 8.C 9.B 10.A 11.A 12.B 13.C 14.B 15.C 16.A 17.C 18.B 19.A 20.B 三、句型改写 1.I like English because it’s easy. 2.Math is difficult, but I like it very much. 3.We have music and art on Wednesday. 4.He doesn’t like geography because it’s boring. 5.History is useful, but many students think it is boring. 6.She likes Friday because she has P.E. on Friday. 7.The class is fun, but it has much homework. 8.I read books and listen to music every evening. 9.Science is hard, but I love it. 10.I love P.E. because it’s relaxing. 四、汉译英 1.My favorite subject is art because I love drawing. 2.Math is difficult but useful. 3.We have Chinese, math and P.E. on Monday. 4.She doesn’t like history because it is too boring. 5.English is easy, but my deskmate thinks it is difficult. 6.I like music and P.E. 7.—Why do you like geography? —Because it lets me know the world. 8.Science is interesting, but it has many hard words to remember. 9.I am happy on Friday because we don’t have math class in the afternoon. 10.I like reading books and listening to music after class. 2 / 2 学科网（北京）股份有限公司 $