要事的英语怎么说

要事的英文：
an important matter

• 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。

• 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）

• 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。