Language Arts Canadian Lead Primary School

Again, the name is misleading, in that they don’t necessarily communicate the position of a noun, not in a literal sense anyway. What they do, is one of the two supplementary jobs: describing or connecting.

Prepositions connect nouns to everything else. 

The easy ones to spot are the ones clearly stating location, like behind, above, below etc. The hard ones are the ones indicating other kinds of relationships, such as of, to, for etc.

Where there’s a preposition, however, there will always be a noun that it’s plugging into the grid somewhere.