coming before all others; number one
She was the first person to arrive at the party.
她是第一个到达派对的人。
most important or best
Your first priority should be your health.
你的首要任务应该是你的健康。
before anyone or anything else
Please finish your homework first before playing.
请先完成作业再玩。
for the first time
I first visited Paris when I was twenty.
我第一次访问巴黎是在二十岁的时候。
used to introduce the first point in a list
First, let me introduce myself to the group.
首先,让我向大家介绍一下自己。
used to show strong determination not to do something
I would quit my job first before working for that company.
我宁愿辞职也不愿为那家公司工作。
the person or thing that comes before all others
He was the first in his family to graduate from college.
他是家里第一个大学毕业的人。
the earliest time something is known
The first I heard about the meeting was this morning.
我今天早上才第一次听说这个会议。
the most likely person or thing
Teachers are often the first to notice learning problems.
教师通常是最先发现学习问题的人。
something done or experienced for the first time
Flying was a first for both of us and very exciting.
飞行对我们两人来说都是第一次,非常令人兴奋。
the lowest gear for slow movement
Put the car in first when starting on a hill.
在山坡上起步时,将车挂入一档。
the highest level of university degree in the UK
She worked hard to get a first in her degree.
她努力学习以获得一等学位。