Unit4语法汇总与练习2026-2027学年人教版英语七年级上册

2026-09-05
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摘要:

该初中英语讲义通过框架式结构系统梳理了Unit4并列连词and、but与从属连词because的语法体系,从连词作用分类、语义功能(并列、转折、因果)到用法辨析(如because与because of、because与so),再到结构一致性原则,层层递进呈现知识脉络,突出逻辑关系判断和句法规范等重难点。 讲义亮点在于“语法-练习-应用”的闭环设计,如单项选择第14题通过正误辨析强化because与so的使用规则,句型转换第2题训练because与because of的转换技能,培养语言能力和逻辑思维品质。多样化题型(选择、填空、翻译)满足分层需求,解析详细且提供判断方法,助力学生自主复习,也为教师实施精准教学提供支持。

内容正文:

人教版英语七年级上册Unit4语法汇总与练习 并列连词and、but与从属连词because 第一部分 语法知识点总结 一、连词的作用与基本分类 连词用来连接词、短语或句子,帮助表达并列、转折和因果等逻辑关系。and、but常连接地位相同的成分;because引导原因状语从句。 判断连词不能只看单个词,要读懂前后内容之间的关系。 二、and表示并列或顺承 and表示“和;而且;然后”,连接意义相近、并列或先后发生的内容。 例:Math is useful, and it is interesting.(数学很有用,而且很有趣。) 例:Open the book and read the passage.(打开书,然后阅读文章。) and连接两个不同的名词作主语时,谓语通常用复数。例:Tom and Amy are in the science club. 三、but表示转折 but表示“但是”,用于连接意思相反或存在明显对比的内容。 例:The task is difficult, but it is interesting.(任务很难,但是很有趣。) 说明:difficult与interesting不是简单并列,后半句带来转折,因此用but。 四、because表示原因 because表示“因为”,后面接完整的原因句,回答why提出的问题。 例:I like science because I can learn about the world.(我喜欢科学,因为我能了解世界。) because引导的从句可以放在主句后,也可以放在主句前。放在前面时,原因从句后通常用逗号。 例:Because it is raining, we stay in the classroom. 五、because与because of;because与so 1、because后接句子,because of后接名词或名词短语 例:We stay inside because it is raining. / We stay inside because of the rain. 2、同一个简单因果关系中通常不同时使用because和so 错误:Because I was tired, so I went to bed early. 正确:Because I was tired, I went to bed early. / I was tired, so I went to bed early. 六、连接内容时要保持结构一致 1、连接词与词 and和but可以连接词性相同、作用相同的词。例:The classroom is large and bright. large与bright都是形容词,共同说明classroom。不能把不对应的成分随意连接。 2、连接短语 连词也可以连接两个结构相同的短语。例:We read books and play basketball after school. read books与play basketball都是动词短语,形式保持一致。 3、连接完整分句 如果连词两边都有主语和谓语,它连接的是两个分句。例:I like history, but my sister likes science. 两边意思形成对比,因此用but。 4、相同主语可以省略 两个动作的主语相同时,第二个主语常可省略。例:Tom opens the book and reads the story. 如果主语不同,则要分别写出,如Tom reads the story, and Amy takes notes。 七、and与but的语义判断 1、and表示并列补充 前后内容方向相同,后一部分增加信息时常用and。例:Our English class is useful, and it is fun. useful和fun都是对课程的正面描述。 2、and表示动作先后 在指令或叙述中,and可以连接按顺序进行的动作。例:Turn to Page 20 and read the dialogue. 先翻页,再阅读,使用and表示顺承。 3、but表示与预期不同 but不只是连接反义词,还可以表示后一情况与前文带来的正常预期不同。例:It is raining, but the players keep practising. 下雨通常会停止训练,后半句却与这一预期相反。 4、不能只凭褒义或贬义选连词 选择连词要比较完整意思。The test is difficult and important. 中difficult和important虽感情色彩不同,但并无转折;The test is difficult, but I enjoy it. 才有明显转折。 八、because的句法和因果关系 1、because后面必须是完整句 because是连词,后面要有主语和谓语。例:We stay inside because it is cold. it是主语,is是谓语,因此结构完整。若后面只有the cold weather,应使用because of。 2、原因从句的位置 because从句放在主句后时,通常不需要在because前加逗号;放在句首时,原因从句后常用逗号。 例:Because the library is quiet, I like reading there。 3、because回答why Why提问原因,回答时可用Because +完整句。例:—Why do you like geography? —Because I can learn about different places. 在正式完整回答中,也可说I like it because …。 4、原因和结果不要重复连接 汉语常说“因为……所以……”,英语里同一组主从句通常只保留一个连接词。Because I am tired, I go to bed early. 或 I am tired, so I go to bed early. 不能同时使用because和so。 九、because、because of与相关连词辨析 1、because与because of看后接成分 because后接句子,because of后接名词、代词或名词短语。We cancel the game because it rains. 与 We cancel the game because of the rain. 意思接近,但结构不同。 2、and、but、because看逻辑关系 同向补充或先后动作用and,意义对比或与预期相反用but,后一部分说明原因用because。做题时先遮住选项,用自己的话概括前后关系,再选择连词。 3、or的相关易混用法 or可表示“或者”,也可在“祈使句 + or + 句子”中表示“否则”。例:Hurry up, or you will miss the bus. 这一用法与and、but同属常见并列关系,需要结合语境判断。 4、完成句子后的检查 检查连词两边是否结构完整、逻辑是否通顺、主谓是否一致以及标点是否正确。尤其要确认because后有主语和谓语,because of后没有完整谓语。 十、标点、完整句与判断方法 连接两个完整而较长的分句时,and或but前常用逗号;连接两个词或短语时通常不用逗号。 选择连词时先概括前后意思:同向补充或先后用and,相反对比用but,后半部分说明原因用because。 还要检查because后是否为完整句。如果后面只是名词短语,应用because of。 第二部分 专项巩固练习题 一、单项选择(15题) 1. I like English, ____ it is very interesting. A. and B. but C. because D. so 2. The story is short, ____ it is very wonderful. A. and B. but C. because D. so 3. He can't go to school ____ he is ill. A. and B. but C. because D. so 4. I get up early, ____ I am never late for school. A. and B. but C. because D. / 5. —Why do you like music? —____ it can make me relaxed. A. And B. But C. Because D. So 6. We didn't go out ____ the bad weather. A. because B. because of C. so D. but 7. Tom ____ Mike are good friends. A. and B. but C. because D. so 8. Study hard, ____ you will pass the exam. A. and B. but C. because D. or 9. Hurry up, ____ you will miss the early bus. A. and B. but C. so D. or 10. He likes math, ____ he doesn't like P.E. A. and B. but C. because D. so 11. ____ it is Sunday today, we don't have classes. A. Because B. So C. Because of D. But 12. The little girl stayed at home ____ the heavy rain. A. because B. because of C. and D. but 13. He is very young, ____ he knows a lot. A. and B. but C. because D. so 14. Which sentence is right? A. Because he is tired, so he goes home. B. Because he is tired, he goes home. C. He is tired because of he goes home. D. He goes home, because of he is tired. 15. I read books ____ do sports in my free time. A. and B. but C. because D. so 二、用and / but / because / or填空(10题) 1. I like drawing, ____ I draw every day. 2. The bag is old, ____ it is still useful. 3. He doesn't go to the park ____ he has much homework. 4. Get up quickly, ____ you will be late. 5. She likes singing ____ dancing. 6. I want to buy the book, ____ I don't have enough money. 7. ____ the weather is nice, we go for a walk. 8. You can stay at home ____ go out with us. 9. The boy works hard, ____ he gets good grades. 10. I didn't sleep well, ____ I feel sleepy now. 三、句型转换(5题) 1. He likes history because it is fun.(对划线部分提问) ____ ____ he ____ history? 2. Because it rained, we stayed at home.(用because of改写) We stayed at home ____ ____ ____. 3. The book is interesting. It is a little difficult.(合并句子,用but) ____________________________________ 4. Work hard, and you will make progress.(改为同义句,or) ____ ____ hard, ____ you won't make progress. 5. I like science. It helps me know the world.(合并句子,because) ____________________________________ 四、句子翻译(5题) 1. 数学很难,但是很有用。 ____________________________________ 2. 我喜欢阅读,因为它很放松。 ____________________________________ 3. 因为大雨,我们取消了运动会。 ____________________________________ 4. 快点,否则你会错过火车。 ____________________________________ 5. 他会唱歌和跳舞。 ____________________________________ 第三部分 参考答案与解析 一、单项选择 1、A 解析:and表并列递进,英语有趣,所以我喜欢。 2、B 解析:short短,wonderful精彩,语义转折用but。 3、C 解析:生病是不能上学的原因,用because。 4、A 解析:早起,所以从不迟到,顺承关系用and。 5、C 解析:why提问,回答用because。 6、B 解析:the bad weather名词短语,用because of。 7、A 解析:and连接两个并列主语。 8、A 解析:祈使句 + and,表顺承,努力学习就会通过考试。 9、D 解析:祈使句 + or,否则。 10、B 解析:喜欢数学,不喜欢体育,转折but。 11、A 解析:because引导原因状语放句首,不与so连用。 12、B 解析:the heavy rain名词短语,because of。 13、B 解析:年纪小,懂得多,转折but。 14、B 解析:because和so不能同时使用;because of后接名词短语,不接句子。 15、A 解析:read books和do sports并列,and。 二、用and / but / because / or填空 1、and 2、but 3、because 4、or 5、and 6、but 7、Because 8、or 9、and 10、because 三、句型转换 1、Why does; like 2、because of the rain 3、The book is interesting, but it is a little difficult. 4、Don't work; or 5、I like science because it helps me know the world. 四、句子翻译 1、Math is difficult but it is very useful. 2、I like reading because it is relaxing. 3、We canceled the sports meeting because of the heavy rain. 4、Hurry up, or you will miss the train. 5、He can sing and dance. 学科网(北京)股份有限公司 $

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Unit4语法汇总与练习2026-2027学年人教版英语七年级上册
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Unit4语法汇总与练习2026-2027学年人教版英语七年级上册
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Unit4语法汇总与练习2026-2027学年人教版英语七年级上册
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