Unit 4 My Favorite Subject 单元语法：连词 and, but 和 because 的用法（精讲课件）-2025-2026学年七年级英语上册单元知识点精讲精练（人教版2024）

英语语法专项 LESSON OF JUNIOR MIDDLE SCHOOL ENGLISH 初 中 七年级上册 Unit 4 My Favorite Subject CONTENTS 录 目 新教材（单元） 语法点 Unit 1 You and Me *be 动词的用法 * 人称代词 * 物主代词 Unit 2 We’re Family *主谓一致 *‘S型所有格 Unit 3 My School *方位介词及短语 *there be 句型 Unit 4 My Favorite Subject *连词 and, but 和 because 的用法 Unit 5 Fun Clubs *情态动词 can *play+乐器/球类/棋牌 Unit 6 A Day in the Life *时间表达法 * 问时间 *频率副词 Unit 7 Happy Birthday *基数词和序数词 *日期的表达 * 疑问副词 连词 and, but 和 because 的用法 CONTENTS 02 03 01 从属连词because 并列关系连词and 转折关系连词but 连词的定义 连词是虚词，不能独立承担句子成分，主要功能为起连接作用。常见的连词有and（和，表并列）、but（但是，表转折）、because（因为，表原因）等。 and 并列关系 和，又，及 6 and可用来…… 连接句子 表示对等 顺承关系 连接短语 连接单词 and连接单词 连接名词（表示“和”） I have a pen and a notebook. 我有一支钢笔和一个笔记本。 连接动词（表示动作连续或并列） We sing and dance in the class. 我们在课堂上唱歌又跳舞。 连接形容词（描述人或事物的多个特征） The cat is small and cute. 这只猫又小又可爱。 连接代词（指代两个或多个人/事物） He and she are good friends. 他和她是好朋友。 and连接短语 连接名词短语 I like eating apples and drinking milk. 我喜欢吃苹果和喝牛奶。 连接动词短语 My mother gets up early and makes breakfast every day. 我妈妈每天早起并做早餐。 连接介词短语 The book is on the desk and under the lamp. 这本书在桌子上，而且在台灯下面。 and连接句子 连接两个陈述句（表并列关系） I finish my homework and I watch TV. 我完成了作业，然后看电视。 连接两个祈使句（表建议或指令） Open your book and read the text. 打开书，读课文。 连接两个含情态动词的句子 We can go to the park and play games there. 我们可以去公园，在那里玩游戏。 祈使句 + and + 简单句 and起到了连接作用，让前面的祈使句带有“条件”的意思，表示“如果做了前面祈使句里的动作，就会发生后面简单句里的结果”。 结构拆解 祈使句：开头用动词原形，表达命令、建议或请求，比如“Open the door”（开门）、“Study hard”（努力学习）。 and：连词，这里不只是“和”的意思，更重要的是连接条件和结果，可理解为“那么”“就会”。 简单句：通常用一般将来时（will+动词原形）或一般现在时，表达前面动作带来的结果。 Study hard, and you will get good grades. 努力学习，那么你就会取得好成绩。 2. Open your book, and you can see the picture. 打开你的书，你就能看到那幅图。 3. Come early, and you will meet the teacher. 早点来，你就能见到老师了。 4. Listen carefully, and you can understand me. 认真听，你就能听懂我的话。 but 转折关系 但是，可是 13 but可用来…… 连接句子 连接短语 连接单词 表示但是 然而可是 but连接单词​ 连接名词 I like apples but I don‘t like bananas. 我喜欢苹果，但是我不喜欢香蕉。 连接形容词： The cat is small but cute. 这只猫很小，但是很可爱。 连接动词： He runs slow but jumps high. 他跑得慢，但是跳得高。 but连接短语 连接名词短语 I want a pen but not a pencil. 我想要一支钢笔，而不是一支铅笔。 连接动词短语 She likes reading books but hates doing homework. 她喜欢看书，但是讨厌做作业。 连接介词短语 The ball is on the desk but not in the bag.球在桌子上，而不是在书包里。 but连接句子 It is rainy today, but we still go to school. 今天下雨了，但是我们还是去上学了。 He is very young, but he knows a lot. 他年纪很小，但是知道很多东西。 I get up late this morning, but I don't miss the bus. 我今天早上起晚了，但是没错过公交车。 Tip1: but是连词，连接单词或短语时，前后部分要保持“同类”（如都是名词、都是动词短语）。​ tip2: 连接两个句子时，but前面通常要加逗号，再接后面的句子。​ Tip3: but不能和though/although（虽然）同时使用，比如不能说“Though it rains, but we go out.”，只能说“Though it rains, we go out.”或“It rains, but we go out.”。 tips because 引导原因 状语从句，因为 19 基本结构​ 结构1： 主句 + because + 原因状语从句（最常用，先讲结果/情况，再讲原因）​ She cries because she is hurt. 她哭了，因为她受伤了。 结构2： Because + 原因状语从句，+ 主句（先讲原因，再讲 结果/情况，从句后加逗号）​ Because it rains heavily, we can't go out. 因为雨下得很大，我们不能出去了。 在英语中，because和so不能同时出现在一个句子里，只能用其中一个连接逻辑关系。 Because he studies hard, he gets good grades. 因为他努力学习，所以他取得了好成绩。 He gets good grades because he studies hard. 他取得了好成绩，因为他努力学习。 Because he studies hard, so he gets good grades. tips V X V 基础简单句问答 Why do you get up early every morning? Because I need to catch the school bus. 日常场景问答 Why does Lily bring an umbrella today? Because the weather report says it will rain this afternoon. 含否定意义的问答 Why don't you play football with us? Because I have a lot of homework to finish. 第三人称否定问答 Why doesn't Tom go to the party? Because he doesn't like noisy places. 1．The child sees an old man at the crossing ________ runs to help him. A．because B．and C．but 2．The weather is nice, ________ we can go to the park. A．but B．or C．and D．because 3．My sister is a doctor ________ she works in a hospital. A．but B．or C．and D．so 4．This is my little cat ________ its name is Alice. A．but B．and C．or 5．My father often says “Never give up ________ you’ll do better.” A．but B．so C．and D．or practice B C C B C 6．—Is that your father? —No. My father is tall ________ strong. A．and B．but C．or 7．I play volleyball very well, _________ my sister doesn’t. A．because B．or C．but D．and 8．My brother doesn’t like drawing, _________ I like it very much. A．but B．and C．so 9．—The policemen have worked for ten hours. ________, nobody took a break.   —Thanks to (多亏了) their hard work, we can live a peaceful life. A．So B．Moreover C．However D．Although 10．Life is difficult, ________ I always look on the bright side of it. A．and B．but C．so D．or practice A A C C B 11．It rained heavily on National Day, ______ we still had a great time watching a movie at home. A．but B．so C．for D．or 12．Tom wanted to go to a cinema last weekend, ________ his sister liked to go to the library. A．so B．or C．but D．because 13．It takes much effort and time to care for dogs, ________ to me the rewards are worth it. A．so B．or C．but D．for 15．Jake ran quickly all the way to the bus stop, ________ he still missed the bus. A．or B．but C．and D．so 16．My mother is very busy with work, ________ she still takes time to talk to me every day. A．and B．but C．so D．or practice A C C B B 17．I like apples, ________ I don’t like pears. A．and B．but C．so D．or 18．I forgot my umbrella, ________ I got wet in the rain. A．so that B．because C．but D．so 19．He worked too hard, ________ he fell ill again. A．because B．so C．after D．when 20．Suzhou Amusement Park will be open tomorrow, ________ you must get up early if you want to visit it with me. A．but B．or C．so D．also 21．I studied hard ________ I passed the final exam in the end. A．so B．because C．because of D．so as to practice B D B C A 22．They can’t go swimming ________ the water is too cold. A．so B．and C．because D．or 23．Betty’s bike was broken, __________ she had to walk to the Capital Library. A．or B．so C．though D．because 24．Janet has done a lot for us, ________ we want to write her a thank-you letter. A．but B．or C．whether D．so 25．Rules are helpful to us, ________ we have to follow (遵守) them. A．because B．but C．so D．however 26．John feels excited ________ he is going to have a tennis match with an excellent player this weekend. A．because B．but C．so practice C B D C A THE END $