1. On indicates location higher than something and touching it; on top of.

Pattern: on + noun
The newspaper is on the table.
Please sign your name on the dotted line.

2. On indicates an outside location.

Pattern: on + the + noun
He was standing on the corner of First Street and Maple Avenue.
Let's have a barbecue on the balcony.

Typical nouns after on the:
balcony, beach, corner, fence, field, ground, hill, horizon, lawn, patio, porch, roof, terrace

3. On indicates a surface location.

Pattern 1: on + the + noun
She rides her bicycle on the sidewalk.

Typical nouns after on the:
boardwalk, court, (baseball) diamond, field, highway, path, rink, road, rocks, screen, sidewalk, street

Pattern 2: on + 0 noun
That is the only place on earth where she feels safe.

Typical nouns after on:
earth, land, page one (or any other number), solid ground, water

4. On indicates certain inside surface locations.

Pattern: on + the + noun
There is a fly on the ceiling.

Typical nouns after on the:
ceiling, floor, stairs, steps, wall, window
first/second (or other number) floor

5. On indicates surface contact.

Pattern: verb + noun + on + noun
The child pasted the picture on the page.

Typical verbs:
glue, hold, paste, stick

6. On indicates location in a part of an area.

Pattern: be + on + the + noun + of + noun
The porch is on the side of the house.

Typical nouns after on the:
border, bottom, edge, end, exterior, inside, interior, left, outside, outskirts, first/second (or other number) page, right, side, surface, top

Fact
Fourteen years before the Titanic sank, novelist Morgan Robertson published a novel called Futility. The story was about an ocean liner that struck an iceberg on an April night. The name of the ship in his novel was The Titan.      .. More >>