on meaning:
prep.) in contact with, the surface or upper part of a thing, and supported by it; placed or lying in contact with the surface;
prep.) located near, at the time of; at the moment of, with regard to
on sentence:
We live on the earth.
Let’s meet on Sunday.
He lay down on the bed.
I met her on the street.
Don’t walk on the grass.
My book is on your desk.
The lunch is on the table.
He was sitting on a bench.
I am on holiday this week.
I was on my way to school.
I spilled egg on the floor.
I will do well on the test.
I saw a fly on the ceiling.
You are on the wrong train.
Put some salt on your meat.
The cat slept on the table.
He is standing on the hill.
He fastened his eyes on me.
Napoleon announced his second abdication on 24 June 1815.
She wears rings on her ears.
I hung a picture on the wall.
He kissed me on the forehead.
His house stands on the hill.
He patted me on the shoulder.
There is no life on the moon.
Stick a stamp on the envelope.
He spread butter on the bread.
Is there life on other worlds?
She carried a baby on her back.
She sewed a button on her coat.
He dashed the cup on the floor.
Her mother knocked on the door.
He built his house on rock.
He touched me on the cheek.
He reflected on his errors.
He hung his coat on a hook.