Part 5 之介词专攻

介词是 Part 5 出现最多的一类。这一节把 KET 范围内的介词按「用法族」整理清楚。

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一、时间介词（口诀：大 in，天 on，点 at）

介词	用于	例
in	年、月、季节、上下午、一段时间后	in 2026, in May, in summer, in the morning, in two hours
on	具体某天、星期、日期、某天的上下午	on Monday, on 1st May, on my birthday, on Monday morning
at	时刻、节日、night	at six, at Christmas, at night

三个必须单独记的：

• at night（不是 in night）
• on Monday morning（具体到某天就用 on，覆盖 in the morning）
• in time（及时）vs on time（准时）——含义不同

其他时间介词：for + 时间段／since + 时间点／during + 事件／before / after / from...to... / by（不迟于）／until（直到）

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二、地点介词

介词	用法	例
in	在里面、大地方	in the box, in China, in the classroom
on	在表面上、街道、楼层	on the wall, on the floor, on the second floor
at	在某一点、小地方、活动场所	at home, at school, at the bus stop, at the party
to	朝……去	go to school, the way to the station
from	从……来	I'm from China
between / among	两者／三者以上之间	between A and B
under / over / above / below	下／上	under the table
next to / beside / near / opposite	旁边／附近／对面	opposite the bank
in front of / behind	前／后	in front of the door
across / through / along	横穿／穿过／沿着	walk along the road

易错点：

• arrive in（城市国家）／arrive at（车站商店）／get to／reach（后面直接跟地点，不加介词）
• in the tree（树上长出来的，如叶子）／on the tree（外来的东西挂在树上，如鸟）——KET 偶尔考
• at home / at school / at work 都不加 the

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三、方式介词

• by + 交通工具（不加冠词）：by bus, by bike, by train, by car
• on foot 步行（不是 by foot）
• in a car / on a bus 也可以（具体到某辆车时用 in/on）
• with + 工具：write with a pen
• in + 语言/材料：write in English, made of wood

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四、必背的固定搭配（Part 4、5 通吃）

be + 形容词 + 介词：

• good at / bad at 擅长／不擅长
• interested in 感兴趣
• afraid of 害怕
• full of 充满
• different from 不同于
• famous for 因……闻名
• ready for 为……准备好
• late for 迟到
• kind to 对……友好
• proud of 为……自豪

动词 + 介词：

• listen to / look at / look for / look after / wait for / ask for / laugh at / belong to / depend on / agree with

名词 + 介词：

• a photo of / the answer to / the key to / an example of / the reason for

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练习：填介词

1. I was born ____ 5th June, 2014.
2. She is good ____ swimming but afraid ____ deep water.
3. We go to school ____ foot, but my brother goes ____ bus.
4. He has lived here ____ 2019, that is ____ five years.
5. Please wait ____ me ____ the school gate.