on in at的用法（介词：关于如何使用in, on和at的简单指南）

如何使用in, on和at

in、at和on这两种最常见的语境都涉及到确定某人或某事在哪里(地点)和某事发生的时间(时间)。 下面的例句解释了这些介词在各种时间和地点的使用情况。

In, on和at作为地点介词

At表示一个具体的点，位置、地方。

I’m working at the bakery.

The shop is at 455 Main Street.

Someone is at the door.

Is she at a concert tonight?

Read the title at the top of the page.

On表示在某个平面上：

The painting is on the wall.

Her ring is on her middle finger.

Do you like anything on the menu?

I live on Grove Street.

The restaurant is on the river.

In用在一个封闭的空间，或包含边界或边界的一般区域。

She has a penny in her pocket.

I left my wallet in the car.

The children are in the garden.

They live in New York City.

I’m staying in France this summer.

注意:当提到建筑物或其他封闭区域时，“at”和“in”两个介词都可以使用，这取决于上下文。 如果你想描述某人/某事的大致位置，你应该用“at”。 例如，“Mary is at the school.” 然而，如果你需要强调某人/某事在建筑物或区域内，你可以用“in”。 例如，“Mary is in the school.”

In, on和at作为时间介词

At用于具体的时间，几点，或一天的时刻。

We’ll meet you at 6 o’clock.

The show starts at 4:45.

I hate driving at night.

On表示某天，假日，周末等。

The party is on May 5th.

They work out on Mondays.

I relax on the weekend.

He left on Christmas day.

We met on Easter.

I cried on my birthday.

In用于年，季节、年代、一段时间、将来等。

I saw him in August.

We ski a lot in the winter.

You graduated in 2005.

She grew up in the 90s.

It was cold in the Ice Age.

He was angrier in the past.

I’ll meet with you in an hour.

It was dark in the morning.

I eat dinner in the evening.