Hello, it is Justin again!
Today I am going to talk about English! This is going to be about “on and for”. I have got a couple questions regarding this, so I would like to go about it in detail.
I am going on a business trip.
I am leaving for a business trip.
They both mean the same thing, but the nuance is slightly different. For example, if you are going on a business trip, you have a purpose that was planned before hand. While if you are leaving for a business trip, the topic came up suddenly.
“For” has a purpose. Whereas, “on” means that you are engaging in it.
For this example, it is more natural to use “on”. Another example would be:
“I am going on four shots.”
“I am going for four shots.”
This is more explicit. “On” in this case means that you are on your fourth drink. But this “for” means that your goal is to get to four drinks.
I hope this helped your understanding between “on” and “for” a bit.