He is the first person to arrive at the party.

I finished first in the race.

My first was a failure, but I learned from my mistakes and my second was a success.

At first, I was nervous about starting a new job.

In the first place , I need to finish my homework.

First of all, let me introduce myself.

First things first, let's prioritize our tasks for today.

The reception area is located on the first floor of the building.

The first lady attended the charity event.

I need to consider putting grates on all first-floor windows.