Preposition Rule

There is one very simple rule about prepositions. And, unlike most rules, this rule has no exceptions.

Rule
A preposition is followed by a "noun". It is never followed by a verb.
By "noun" we include:
· noun (dog, house, love)
· proper noun (name) (Athens, Maria)
· pronoun (you, him, us)
· noun group (my first house)
· gerund (walking)

A preposition cannot be followed by a verb. If we want to follow a preposition by a verb, we must use the "-ing" form which is really a gerund or verb in noun form.

Here are some examples :

Subject verb	preposition	"noun"
The food is	on	the table.
She lives	in	Patra