在中午用in还是on

在中午用at。

noon，正午，所指的时间范围很小，可以看成是某个时刻，所以用at，同样用at还有midnight，午夜。

at noon adv.在中午

He decided to cook the fish at noon.

他决定在中午做鱼。

The festival parade will begin at noon.

节日*行将在中午开始。

At noon, you can go to the Summer Palace.

中午，你可以去颐和园。

At noon, everyone was glad to have a picnic lunch.

中午，每个人都很高兴有一个野餐午餐。

One day, when the Lion was asleep at noon, the little Mouse came running by.

一天，当狮子在中午睡觉的时候，小老鼠跑了过来。

If someone invites you to meet him or her at noon, then you're expected to be there at noon.

如果有人邀请你中午去见他或她，那么你就应该中午到那里。

We wake you at 6 o'clock, and breakfast is at 8 o'clock, lunch is at noon, there's tea at 3:30 and supper is at 6 o'clock.

我们在6点叫醒你，早餐在8点，午餐在中午，3点半有茶点，晚餐在6点。

We reached the summit at noon.

中午时分我们抵达峰顶。

She'll arrive in New York at noon.

她将在正午抵达纽约。

There's a connecting flight at noon.

中午有一趟相衔接的航班。
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The long day of meetings started at noon.

漫长的会议日从中午开始了。

She finally emerged from her room at noon.

中午，她终于从屋里出来了。

The meeting is scheduled to commence at noon.

会议定于午间召开。