Question

say me the use of the preposition with with giving reference

Answer 1

it is usually placed before a noun or pronoun in a sentence.
eg:-1. the cup is kept "on" the table.
2.we "wondered at " the beautiful paintings.
3. please "think about "this problem.
4.the chair is kept "below "the window.

Answer 2

Prepositions are used before or after nouns
We say" the cat is UNDER the table"
Here under is explaining cat's relationship with table ie. it's place.