Wow! Look at all those CD'S ON DISPLAY! It's like a museum exhibition!
Hurry up!!! If we don't run, we won't be on time and I don't want to be late!
Why can't we take the bus? I don't want to go ON FOOT, I don't want to walk!!
I am going to save a lot of money! Everything is ON SALE!
IWe are finally ON BOARD! Now we can sit, relax and enjoy the journey!
Leave alone! I don't want to socialize right now, I want to be ON MY OWN
You didn't wash the dishes ON PURPOSE, right? You have planned it like this for me to do it! Confess!
To be punctual
When you don't take any means of trasport to go to a place
To show something for others to see
Go inside a meansof transport: plane.
When you plan to do something
When prices are reduced
When you are/do something alone, with nobody else.