2027年高考英语一轮复习语法填空 while 和 but 核心区分

while 和 but 核心区分（语法填空高频考点）

 

一、基础词性总览

1. but：并列连词（最常用）

2. while：可作连词，分两大用法（转折/对比 + 时间）

二、用法细分+做题判断

（一）but 用法（并列连词）

1. 核心含义：但是、可是（纯粹转折，语气强）

2. 句式规则（填空必记）

• 连接两个完整分句（前后都有主谓，句子独立）

• 位置：句中，不能放句首表转折（书面正式文体）

• 前后语义直接相反、对立

例句：He is young, but he knows a lot. 他年纪小，但懂得很多。

3. 固定搭配拓展（语法填空常考）

• not...but... 不是……而是……. She is not a teacher, but a doctor.

（二）while 三大核心用法（连词，填空重灾区）

用法1：表转折/对比（然而、而）⭐和but最易混淆

1. 语义：侧重两者对比、反差，不是单纯“否定转折”

2. 句式：◦ 可放句首 / 句中

        ◦ 连接两个完整分句

3. 语气：比 but 弱，侧重对照、对比两者不同

例句：Some people like music, while others prefer sports.

      有些人喜欢音乐，而另一些人偏爱运动。（两者对比）

关键区别：

• but：前后语义对立、相悖（一事两面，前后相反）

• while：前后两类人/事物对比（各有特点，形成反差）

用法2：表时间（当……时候；与此同时）（最高频）

后常接进行时态/延续性动词，强调主句从句动作同时发生

例句：While I was reading, my mother came in.

我看书的时候，妈妈进来了。

用法3：表让步（虽然、尽管）= although

只能放句首，引导让步状语从句

例句：

While he is tired, he still keeps working.

虽然他很累，但依然坚持工作。

三、考场秒杀区分口诀&判断步骤

第一步：先看语境，排除时间/让步

1. 表“当……时” → 直接选 while

2. 表“虽然”（句首让步）→ 直接选 while

第二步：只剩“转折/对比”时，3条判断标准

1. 看语义

◦ 前后直接矛盾、相反、否定 → 用 but

◦ 前后人/物/情况对照、差异对比 → 用 while

2. 看位置

◦ 空格在句首表转折 → 只能用 while（but 不用于句首转折）

◦ 空格在句中，两者都可，再看语义

3. 看句式逻辑

◦ 同一件事，好坏/对错相反 → but

◦ 两类主体，特点不同 → while

四、易混对比例句

1. He is rich, but he is unhappy.

他很富有，但是并不快乐。（同一人，状态相反 → but）

2. Tom is outgoing, while his sister is quiet.

汤姆性格外向，而他妹妹很文静。（两个人对比 → while）

3. While it rained heavily, we still went out.

虽然雨下得很大，我们还是出门了。（让步 → while）

4. I was doing homework while my brother was playing games.

我在写作业，与此同时弟弟在玩游戏。（时间/同步动作 → while）

五、语法填空专项小练习

1. I wanted to go out, ______ it rained all day.

2. Some students study hard, ______ others waste time.

3. ______ I understand you, I can’t help you.

4. She is short, ______ her brother is tall.

答案1. but（同一想法被客观情况阻碍，语义相反）

     2. while（两类学生对比）

     3. While（句首，让步：虽然）

     4. while（兄妹二人身高对比）

专项练习 区分while /but

一、单句填空（共20题，只填 while / but）

基础组

1. He tried his best, ______ he failed in the exam.

2. My father likes tea, ______ my mother prefers coffee.

3. ______ I admit his advantages, I don't trust him.

4. The room is small, ______ it is very comfortable.

5. Some animals sleep in the day, ______ others sleep at night.

6. I was watching TV ______ my sister was washing clothes.

7. She is not lazy, ______ just a little slow.

8. ______ the task is difficult, we will finish it on time.

9. Jack is good at math, ______ his twin brother does well in English.

10. It looks easy, ______ actually it is quite hard.

提升组

1. ______ everyone knows the rule, few people follow it strictly.

2. We have lived here for years, ______ we still don't know our neighbors well.

3. Boys usually love ball games, ______ girls are more interested in dancing.

4. I planned to visit you, ______ an unexpected thing stopped me.

5. He fell asleep ______ the teacher was giving a lesson.

6. This book is interesting, ______ that one is boring.