Cuando utilizar la palabra JUST:
Ejemplos:
1. Exactly
It's just what I wanted!
It's just as I thought!
2.Just as good, nice, easily...
You're just as good as anybody.
He's just as attractive as his brother.
3. Just have done something
I have just finished work.
I have just arrived home.
4.Only I just needed a drink.
I just want to talk to you for five minutes.
5.At this/that moment;
Now I'm just off.
I'm just finishing my homework.
6. Simply
It was just not my lucky day.
7.Completly
Lunch was just delicious!
8.Only
I've decided to learn English just for fun.