put sth up
phr. v..phr. v.. to attach something to a wall or build a temporary structure so people can see or use it.
phr. v.. to erect a structure or to affix an object to a vertical surface for display or utility; transitive and often separable.
We need to put some pictures up in the hallway.
The local council decided to put up a new fence around the park to keep the dogs safe.
After the storm damaged the original signage, the shopkeeper had to put up a temporary banner to inform customers they were still open.
commonly used with objects like posters, shelves, tents, or signs.
contrast with 'take down'; this phrasal verb is highly productive and covers both 'building' (a tent) and 'hanging' (a painting).
He put up it on the wall.He put it up on the wall.when the object is a pronoun like 'it', it must go between the verb and the particle.