要事的英文：
an important matter
参考例句：
Make a reconnaissance of the work to Be done
对要做的工作要事先考查I invited him to dinner, but he declined on account of urgent business.
我请他吃饭，但他因有要事推辞了。I haven't time to play with the children; I have other fish to fry.
我没空和孩子们玩，我还有要事要做。They struck him as an incongruous trio. "Up to no good, I'll bet," he thought
这三个会搅在一处，光景有什么正经要事罢？——"Let your countenance be pleasant, But in serious matters somewhat grave. -- G. Washington"
要和颜悦色,不过遇到要事则应显得神色庄重。--华盛顿I must warn you beforehand that I shall tell them everything.
我要事先向你说明,我要把一切都告诉他们。Thankyou for you invitation. I love the music of Mozart indeed, but I really have business this evening.
谢谢你的邀请。我的确喜爱莫扎特的音乐，但是我今天晚上另有要事。 important是什么意思：
a.
重要的，重大的；有权力的.，有地位的，有影响力的
be of importance;matter
有重要性;有关系 He is an important official in the government.
他是政府的要员。 This is important to the development of dairy industry.
这对乳品业的发展很重要。Christmas is an important feast for Christians.
圣诞节是基督徒的重要节日。(degree of)importance,seriousness or influence
重要性、严重性或影响力（的程度） 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。
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