Unit3 语法专练 2025-2026学年沪教版（五四学制）七年级英语下册

沪教五四unit 3七下语法专练 复合句（Compound Sentences） 一、核心知识点 1. 什么是复合句？ 复合句是由两个或两个以上独立分句通过并列连词连接而成的句子。每个分句都能独立成句，它们在语法上地位平等。 · 简单句：I like tea. He likes coffee. · 复合句：I like tea, but he likes coffee. 2. 常用的并列连词（FANBOYS） 连词 含义 例句 For 因为（表原因） He is absent, for he is ill. And 和、而且（表补充） She sings, and she dances. Nor 也不（表否定延续） He doesn't smoke, nor does he drink. But 但是（表转折） I tried hard, but I failed. Or 或者（表选择）；否则 Hurry up, or you'll be late. Yet 然而（表转折，比but稍弱） He is rich, yet he is not happy. So 所以（表结果） It was raining, so we stayed home. 记忆口诀：FANBOYS 3. 复合句的标点规则 · 一般情况下，两个分句之间用逗号 + 并列连词。 例：I wanted to go, but it was too late. · 如果分句很短且意义紧密，可以不用逗号。 例：He came and she left. · 使用连接副词（however, therefore, moreover 等）时，要用分号或句号隔开，连接副词不算并列连词。 例：It was late; however, we kept working. 4. 常见错误 1. 逗号粘连（comma splice）：只用逗号连接两个分句，不加连词。 ❌ It is raining, I will stay home. ✅ It is raining, so I will stay home. 或 It is raining. I will stay home. 2. 连词并列不当：混淆 but / yet / so / for 的语气。 ❌ He was tired, so he kept running.（逻辑错误：应用 but） ✅ He was tired, but he kept running. 3. nor 后的倒装：nor 后面的分句要用疑问语序（倒装）。 ✅ He doesn't like coffee, nor does he like tea. 二、练习题（共 40 分） 题型一：选择合适的并列连词（8分） 从 and, but, or, so, for, nor, yet 中选择填空。 1. I was hungry, __________ I made a sandwich. 2. She is kind, __________ her brother is very mean. 3. You can stay here, __________ you can leave now. 4. He didn't study, __________ he passed the exam. 5. She doesn't eat meat, __________ does she eat fish. 6. We hurried, __________ we still missed the bus. 7. He must be ill, __________ he looks so pale. 8. Tom likes playing soccer, __________ he also enjoys basketball. 题型二：合并句子（12分） 将每组两个简单句合并为一个复合句，使用适当的并列连词。 1. I want to buy a car. I don't have enough money. → ______________________________________ 2. She studied hard for the exam. She got an A. → ______________________________________ 3. You can come with us. You can stay at home. → ______________________________________ 4. He never exercises. He doesn't eat healthy food. → ______________________________________ 5. The movie was boring. We left early. → ______________________________________ 6. She is very rich. She is not happy. → ______________________________________ 题型三：判断句子正误并改正（10分） 判断下列复合句是否正确，错误的请改正。 1. It was cold outside, she wore a heavy coat. 错误：________ → 改正：________________________ 2. He likes coffee, but he doesn't like tea. （正确 / 错误） 3. She didn't call me, nor she sent a message. 错误：________ → 改正：________________________ 4. I was tired so I went to bed early. （正确 / 错误） 5. He is rich, yet he lives a simple life. （正确 / 错误） 题型四：填入正确的标点符号和连词（6分） 在空格处填上适当的标点符号（逗号、分号或句号）和连词。 1. I wanted to go to the party __________ __________ I was too tired. （写出标点和连词） 2. She loves reading __________ __________ she spends a lot of time in the library. （写出标点和连词） 3. He didn't apologize __________ __________ did he explain his behavior. （写出标点和连词） 题型五：翻译题（4分） 1. 快点，否则你会错过火车。 → ______________________________________ 2. 他努力学习，所以他考试通过了。 → ______________________________________ 三、答案与详细讲解 题型一答案 1. so（结果：饿了，所以做了三明治） 2. but（转折：她善良，但他哥哥刻薄） 3. or（选择：留下或离开） 4. yet（转折：没学习却通过了） 5. nor（否定延续：不吃肉，也不吃鱼） 6. but（转折：赶路却错过了） 7. for（原因：脸色苍白，想必是病了） 8. and（补充：喜欢足球，也喜欢篮球） 题型二合并句子答案 1. I want to buy a car, but I don't have enough money. 2. She studied hard for the exam, so she got an A. 3. You can come with us, or you can stay at home. 4. He never exercises, nor does he eat healthy food.（注意 nor 后倒装） 5. The movie was boring, so we left early. 6. She is very rich, yet she is not happy. 题型三改错答案 1. 错误：逗号粘连 → 改正：It was cold outside, so she wore a heavy coat. 或 ...outside. She wore... 2. 正确（but 正确连接两个对比分句） 3. 错误：nor she sent → 改正：nor did she send（nor 后倒装） 4. 正确（so 前逗号可省略，因为分句短） 5. 正确（yet 表示转折，正确） 题型四标点连词答案 1. 逗号 + but → I wanted to go to the party , but I was too tired. 2. 逗号 + so → She loves reading , so she spends a lot of time in the library. 3. 逗号 + nor → He didn't apologize , nor did he explain his behavior.（注意 nor 后倒装） 题型五翻译答案 1. Hurry up, or you will miss the train. 2. He studied hard, so he passed the exam. 四、易错点再提醒 · 逗号不能单独连接两个分句（避免 comma splice）。 · nor 后面必须用倒装语序（助动词 + 主语）。 · for 表示“因为”时，只能放在第二个分句，不能像 because 那样放句首。 · so 和 because 不能同时出现在一个句子里。 学科网（北京）股份有限公司 $