什么是介词?
介词是一种虚词,不能单独作句子成分,通常位于名词或代词前,构成介词短语,在句中充当状语、定语、表语等。
例如:
She is in the room.
The book is on the table.
She is in the room.
The book is on the table.
常见介词分类
- 时间介词:at, on, in, during, for, since, until
- 地点介词:at, on, in, under, over, between, among, near
- 方向介词:to, into, onto, toward(s), through, across
- 方式/工具介词:by, with, via
- 原因/目的介词:because of, due to, for, out of
高频介词用法对比
1. in / on / at(时间)
- in:用于较长的时间(年、月、季节、上午/下午等)
in 2025, in July, in the morning - on:用于具体某一天或日期
on Monday, on July 15th, on my birthday - at:用于具体时刻或节日(不带“day”)
at 5 p.m., at noon, at Christmas
2. in / on / at(地点)
- in:在……内部(较大空间)
in China, in the car - on:在……表面
on the wall, on the table - at:在……地点(强调点,而非范围)
at the door, at the station, at school
常见错误提醒
- 不要说 “discuss about” — 正确说法是 “discuss something”(discuss 是及物动词)。
- “listen to music” ✅,不是 “listen music” ❌。
- “good at English” ✅,不是 “good in English” ❌。
小测验(自测)
试着填空:
- We’ll meet ___ 3 p.m. tomorrow. (答案:at)
- The cat is sleeping ___ the sofa. (答案:on)
- She has lived here ___ 2020. (答案:since)