急事的英文：
an urgent matter

参考例句：

I 'd like to have a talk with him about something urgent.
我有点急事要跟他谈。

I was informed this morning that I was to fly to Birmingham this evening on urgent business.
今天早上我被通知，今天晚上我要飞往伯明翰处理一件急事。

It 's urgent!
是急事！

Urgent! please contact ASAP.
有急事,速联络

I have some urgent business with him.
我有急事找他。

As I was in a hurry, I asked him to talk truly.
我因为有急事，便要求他有话直说。

Can you ask her to call me? It 's urgent.
请告诉她打电话给我好吗？有急事。

I'm sorry I couldn't come to see you this morning. I was bound up in some urgent matters
对不起，今天上午我未能来看你，我在忙于处理一些急事。

I invited him to dinner but he declined on account of urgent business.
我请他吃饭，但他因有急事婉谢了。

The matter can wait until the next meeting;it's not urgent.
这件事可以等到下次会议处理,不是急事.

urgent是什么意思：
adj. 紧急的；急迫的

The money was most urgently required.
钱要得很急。

Something urgent have come up.
发生了紧急的事情。

An urgent message was radioed to us this evening.
紧急消息是今晚用无线电传送给我们的。

Her voice was suddenly hard and urgent.
帕 梅 拉 的 声 音 忽 然 变 得 迫 切 而 生 硬 。

She was speaking to him in an urgent voice.
她正急迫地跟他说话。

matter是什么意思：
n. 物质，事情，素材
v. 有关系

be of importance;matter
有重要性;有关系

It is no laughing matter.
这没有什么可笑的。

deposited matter
沉积物|沉淀物

It makes no matter.
那无关紧要。

This is a matter of no account.
这是一件无关紧要的事。