: A word is a preposition when we use it before a noun or pronoun to show position or direction.
The preposition performs a double duty. It 1)
connects and 2)
points out relationship.
That is to say, it joins a substantive (any word or group of words functioning as a noun
), which usually follows it with another
word in the sentence; it indicates what the one has to do with the other.
In the sentence: They live in a house,
the preposition in
joins the noun house
with the verb live.
We know what They live
means, and we know what a house is. The preposition explains what the one has to do with the other. If we remove the preposition, the part of the meaning is lost; the remaining nouns, verbs, and other parts of speech sound jumbled. 1.
Candles were lighted early. 2.
Candles were lighted in
the evening. 3.
candles were lighted. 4.
oil were lighted.
The word in
makes the connection between lighted
and that the whole phrase in the evening
serves to name the time just as early
does in the first sentence. Of
in the fourth sentence shows the relation between oil