Sabah derhal orada olacağım.
- I'll be there the first thing in the morning.
Sabahleyin derhal seni arayacağım.
- I'll call you first thing in the morning.
Sabah hemen orada olacağım.
- I'll be there the first thing in the morning.
I would help you, but I don't know the first thing about gardening.
I'll meet you first thing at the station.
... The first thing we have to do with those pages is that the ...
... And the first thing I did was to go to my hotel room. ...