Unit 4 单元语法：连词 and, but 和 because 的用法（精讲课件）2026-2027学年七年级英语上册单元核心知识精讲精练（新教材人教版）

新人教版/英语/七年级 语 法 专 项 Unit 4 My Favorite Subject 人教版新教材 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 CONTENT 目录 并列关系连词and 1 2 3 转折关系连词but 从属连词because 4 5 课后练习 拓展练习 连词的用法 连词是一类虚词，无法独立在句中充当成分，作用是连接词与词、短语与短语、句子与句子。and、but、because 都是常见的连词。 01 并列关系连词and 并列关系连词and and可用来…… 连接句子 连接短语 连接单词 表示对等 顺承关系 I like apples and bananas. 我喜欢苹果和香蕉。 He gets up early and washes his face. 他早早起床并洗脸。 Tom is tall, and he likes playing basketball. 汤姆个子很高，而且他喜欢打篮球。 She opened the door and walked in. 她打开门，然后走了进去。 ①代词+and+代词 He and she are both good friends. 他和她都是好朋友。 ②句子+and+句子 I am singing and my sister is dancing. 我在唱歌，我的妹妹在跳舞。 ③名词+名词+名词+and+短语 I like apples, bananas, oranges and other fruits. 我喜欢苹果、香蕉、橙子和其他水果。 并列关系连词and “祈使句+and+简单句” 结构：祈使句表条件，and 后接将会产生的结果 祈使句（表条件） and 简单句（表结果） 例句 中文 Work hard and you will get good grades. Work hard, and you will get good grades. 努力学习，你就会取得好成绩。 Read more and you can learn more. Read more, and you can learn more. 多阅读，你就能学到更多知识。 Come early and you will meet him. Come early, and you will meet him. 早点来，你就能见到他。 并列关系连词and 并列关系连词and 1. Study hard and you will get good grades.= If you study hard, you will get good grades. 努力学习，你就会取得好成绩。 2. Get up early and you will catch the bus. = If you get up early, you will catch the bus. 早点起床，你就能赶上公交车。 3. Read more books and you will learn a lot.= If you read more books, you will learn a lot. 多读书，你就会学到很多知识。 4. Speak English often and you will improve quickly. = If you speak English often, you will improve quickly. 经常说英语，你就会进步很快。 02 转折关系连词but and可用来…… 连接句子 连接短语 表示但是 然而可是 I like apples but not bananas. 我喜欢苹果，但不喜欢香蕉。 He gets up early but misses the bus. 他起床很早，却错过了公交车。 Tom is tall, but he doesn’t like playing basketball. 汤姆个子很高，但是他不喜欢打篮球。 She wants to go out, but it rains. 她想出门，可是下雨了。 转折关系连词but 连接单词 ①连接两个作表语的形容词 She is young, but very wise. 她年纪不大，但很聪慧。 ②连接两个分句 The girl is quiet, but she is good at speaking English. 这个女孩很安静，但是她擅长说英语。 ③连接两个分句 I like playing basketball, but my brother doesn’t like it. 我喜欢打篮球，但是我的弟弟不喜欢。 转折关系连词but 转折关系连词but He worked hard, but he didn’t pass the test. 他努力了，但没有通过考试。 It looks difficult, but it’s easy. 它看起来很难，但是很简单。 He likes math, but he doesn’t like history. 他喜欢数学，但不喜欢历史。 Tom won’t go hiking, but his cousin might. 汤姆不会去远足，但他的表兄可能会去。 She is not a nurse, but a writer. 她不是护士，而是作家。 读一读 03 从属连词because 从属连词because because连词，意为因为，用来引导原因状语从句，说明主句动作发生的原因。 结构：主句+because+原因从句（从句说明为什么） 从属连词because 基本句型 句型：主句 + because + 完整句子（从句） I didn’t go to school because I was ill. 我没去上学，因为我生病了。 He likes English because it’s interesting. 他喜欢英语，因为它很有趣。 也可以把 because 从句放句首，从句放句首时，后面要加逗号 Because it rained, we stayed at home. 因为下雨，我们待在了家里。 关键考点 because 是连词，后面必须接完整句子（有主语 + 谓语），不能只接单词 / 短语 He cried because sad.（错，sad 只是形容词，不是句子） He cried because he was sad.（对，because 后面是完整句子） because 和 so 不能连用（和 but & although 不能连用 ) Because he was tired, so he went to bed early.（错） He was tired, so he went to bed early. (对） Because he was tired, he went to bed early. (对） 回答 Why 提问，必须用 because —Why are you late? 你为什么迟到？ —Because I missed the bus. 因为我错过了公交车。 从属连词because 口诀：because和so，一山不容二虎，只能留一个 从属连词because I love summer because I can swim. 我喜欢夏天，因为我可以游泳。 He didn’t eat breakfast because he got up late. 他没吃早饭，因为他起床晚了。 Because the book is fun, I read it every day. 因为这本书很有趣，我每天都读。 She can’t come because she has much homework. 她来不了，因为她有很多作业。 读一读 04 课后练习 课后练习 because and but 课后练习 课后练习 because and and and and but because 05 拓展练习 拓展练习 单项选择 1．I like music ________ it’s relaxing. A．because B．so C．but D．or 2．He didn’t go to school yesterday ________ he was ill. A．so B．because C．but 3．My face turned red and my mouth felt dry ______ I was very nervous. A．because B．or C．so 4．________ English is very useful, ________ many students like it. A．Because; / B．Because; so C．/; but 5．I get up early ________ I don’t want to be late for school. A．so B．because C．but 拓展练习 10．________ science is interesting, I don’t like it. A．And B．Though C．Because 11．—Why do you like music? —________ it’s relaxing. A．Because B．So C．And 12．选择表示原因的连词： I like science ________ I enjoy learning about animals. A．but B．and C．because D．or 13．I have art ________ music on Tuesday. A．but B．because C．and D．so 15．My brother likes art ________ math. A．but B．and C．because 拓展练习 20．I didn’t like summer before, ________ I thought it was too hot. A．because B．but C．so D．or 21．We stayed inside ________ it began to rain heavily. A．because B．but C．or 22．I play football every week ________ it is really interesting for me. A．or B．so C．because 23．Tuesday is my favorite day _________ I have art and science. A．or B．but C．because D．so 24．His favourite subject is maths _________ he is good with numbers. A．and B．but C．because 拓展练习 Bobby is a boy from the USA．His favourite subject is Chinese. Why does he like the subject?___________ he likes China very much. He wants to know something about the history of China, __________ it’s difficult for him now. He has a Chinese friend called Li Li. The girl often helps him with his Chinese. Bobby does well at school. He has seven lessons every day, four in the morning _________three in the afternoon. He likes maths and science very much,_________ his PE isn’t very good. He doesn't like doing sports. He is busy from Monday to Friday. __________ on Saturday and Sunday, he is free. So, what does he do? He always reads books after breakfast. And he plays computer games for two hours in the evening. but but Because But and 根据短文内容，用and，but或because补全短文 27 新人教版/英语/七年级 THE END Unit 4 My Favorite Subject null 98248.305 eng - iTunNORM 000000D8 000000DE 00000875 00000854 00016AC1 0001501F 00007E86 0000741A 00011939 00010E4E� eng - iTunSMPB 00000000 00000210 00000916 000000000042115A 00000000 003BD65E 00000000 00000000 00000000 00000000 00000000 00000000� $