很多七年级同学学英语,单词背得不错,但写句子、做完形总是丢分。 问题往往就出在小小的连词身上。
新人教版七上 Unit 4 专门讲解 and、but、because 等连词,它不只是七上期末高频考点,更是中考的必考语法点,贯穿单选、完形、语篇填空、书面表达各大题型。
连词虽然都是短单词,但决定句子逻辑。逻辑错,整句话就错。今天这篇文章,把七年级上册全部核心连词讲透,配易错点 + 解题步骤 + 随堂练习,学生可以直接收藏刷题。
一、什么是连词?
连词(conj.)属于虚词,不能单独做句子成分,作用是连接词、短语、句子,体现前后的逻辑关系。
✅ 判断小技巧:连词后面一定跟着被连接的另一半;去掉连词,句子逻辑就断裂。
例句:
I like apples and bananas.(连接两个单词) You can stay at home or go with us.(连接两个动作) He is tired, but he keeps working.(连接两个完整分句)
⚠️考试高频坑:区分连词 vs 介词
- 介词(in /at/with /for)
:后面接名词、代词、动名词,不接完整句子
I go to school with my brother.(with 是介词)
- 连词
:后面可以接词、短语、完整句子
I like English and Chinese.(and 是连词)
二、一张表看懂七上全部核心连词
💡小分类:
and / but / or / so:并列连词,前后两部分地位平等 because / when:从属连词,引导从句,依附主句存在
三、并列连词精讲
🔹and:和;并且;然后
表并列,连接多个同等成分;三个及以上并列,只在最后一项前加 and
I like apples, bananas and oranges.
表顺承,翻译 “然后”
I get up at six and go to school.
and 连接两个主语作主语,谓语动词用复数
Tom and Jim are my friends.
🔹but:但是
表转折,前后语义相反
The bag is old, but it's useful.
❗重要规则:but 和 though/although 不能同时出现在一句话,二者二选一 拓展: not A but B不是 A,而是 B
He is not a teacher but a doctor.
🔹or:或者;也不;否则
表选择:或者
Do you like tea or coffee?
否定句中表并列,否定句用 or 代替 and
I don't like milk or juice.
祈使句 + or + 陈述句:否则,要不然
Hurry up, or you'll be late.
🔹so:所以
表结果,前面是原因,后面引出结果
It's raining, so we stay at home.
❗so 和 because 不能同时用在同一个句子 区分:so 作副词含义是 “如此、这么”,修饰形容词 / 副词,如 so good;只有连词才翻译 “所以”。
四、从属连词精讲
🔹because:因为
引导原因状语从句,专门回答 Why 提问。
— Why do you like art? — Because it's interesting.
位置:大多放在主句后面;放句首时,后面加逗号隔开主句
Because it's raining, we stay at home.
⚠️易混辨析:because + 完整句子because of + 名词/代词/动名词✅ because of the rain(正确) ❌ because of it rains(错误)
🔹when:当…… 的时候
引导时间状语从句,描述主句动作发生的时间。
When I'm free, I play basketball with my friends.
I play basketball with my friends when I'm free.
从句放句首,后面必须加逗号。
✅小考点「主将从现」:主句将来时,when 从句用一般现在时
We'll have a picnic when the weather is fine.
💡区分:when 也可以作疑问副词,单独提问时间:When is your birthday? 这时不引导从句。
五、三大高频易错点(考试丢分重灾区❗)
易错 1:because 和 so 不能成对出现
中文习惯 “因为…… 所以……”,英语只能选一个连词。 ❌错:Because I like English, so I join the English club. ✅对:Because I like English, I join the English club. ✅对:I like English, so I join the English club.
易错 2:肯定句用 and,否定句并列要用 or
❌错:I don't like milk and juice. ✅对:I don't like milk or juice.
易错 3:先判逻辑,再选连词
不要看到中文 “和” 就写 and,重点看两句逻辑。
He is tired, but he goes on working.(转折:很累,但是继续工作) He is tired, so he stops working.(因果:很累,所以停下工作)
同样的事实,逻辑关系不同,连词完全不一样。
六、连词解题四步法(做题直接套用)
1️⃣ 拆分句:用逗号、句号把句子切开,看清被连接的两部分
2️⃣ 判关系:心里翻译,判断是并列、转折、选择、因果还是时间
3️⃣ 选连词:并列 and|转折 but|选择 / 否定 or|结果 so|原因 because|时间 when
4️⃣ 做检查:逗号位置、成分对等;禁止 because 与 so 同时出现。
📝记忆小卡片(可以抄在笔记本)
并列顺承用 and,转折却要用 but。
选择否定连接 or,“否则”同样也用or。
表示结果要用so,原因就用 because,
同句二者莫相伴,两个不能一起站。
时间 when 来把把关,先把关系判一判。
做题口诀:先拆分句,再判关系,然后选词,最后检查标点和对等。
七、随堂练习
✍️1 选词填空
用 and, but, or, so, because 填空,词语可重复使用。
I like music, ______ I don't like PE. Tom ______ Jim are good friends. It's late, ______ I must go home now. — Do you want tea ______ coffee? — Tea, please. She is very happy ______ she gets a new bike. My sister can sing ______ dance well. Hurry up, ______ you'll miss the bus. The box is heavy, ______ I can carry it. I don't like milk ______ juice. He is good at English ______ he works hard every day.
✍️2 单项选择
— Why do you like art? — ______ it's relaxing. A. So B. But C. Because D. Or I'm very tired, ______ I go to bed early. A. because B. so C. but D. or — Is it a pen ______ a pencil? — It's a pencil. A. and B. but C. or D. so My father is a doctor, ______ my mother is a teacher. A. or B. so C. and D. because ______ I'm free, I play football with my friends. A. When B. So C. But D. Or Study hard, ______ you will get good grades. A. but B. and C. or D. because
✍️3 改错(找出错误并改正)
Because I like English, so I join the English club. He is tired, and he keeps working. I don't like apples and bananas. It's raining, because we stay at home. I like maths and I don't like history.
📘参考答案与解析
1 选词填空
but 2. and 3. so 4. or 5. because and 7. or 8. but 9. or 10. because
第 3 题:天色已晚,所以要回家,因果关系 so; 第 7 题:祈使句 + or,表示 “否则”; 第 9 题:否定句并列,用 or 不用 and。
2 单项选择
1.C 2.B 3.C 4.C 5.A 6.B
第 1 题:why 问句,用 because 回答; 第 6 题:努力学习,就会取得好成绩,顺承关系 and。
3 改错
1. 去掉 because 或去掉 so。 ✅Because I like English, I join the English club. / I like English, so I join the English club.
2.and → but ✅He is tired, but he keeps working.
3.and → or ✅I don't like apples or bananas.
4.because → so ✅It's raining, so we stay at home.
5.and → but ✅I like maths but I don't like history.
💡中考拓展小提示
连词是中考高频考点,考查形式多样:
单选:词义辨析,判断句内逻辑; 完形填空:上下文逻辑连词选择; 语篇填空:无提示词填写连词; - 书面表达:用好连词,作文逻辑直接上一个档次
很多同学作文单词不错,但缺少 but/so/because,读起来生硬零散。七上打好连词基础,整个初中复合句学习都会轻松很多。
【结尾互动】 今天的连词内容,你学会了吗? 欢迎在评论区留下你的错题,或者说说你最容易混淆哪一组连词。 觉得有用,欢迎转发给七年级同学,一起搞定语法!
💬下期预告:分享七上其他高频语法精讲。