|5. Proper Use of Prepositions|
Prepositions are simple words, but they are not as easy to use as they appear to be. If used wrongly, they become adverbs or conjunctions and convey different meaning.
A preposition is followed by a noun or a pronoun.
We go jogging every day after work. (Preposition)
(The preposition is after and is followed by the noun work.)
An adverb comes after a verb and is not followed by an object.
We got here not so long ago and she arrived after. (Adverb)
(After is an adverb that comes after the verb arrived.)
A conjunction has a clause that comes after it.
We arrived after he had left. (Conjunction)
(The clause he had left comes after the conjunction after.)
Some more words:
Words used as prepositions, adverbs, or adjectives: inside, outside, past, round.
Words used as prepositions, adverbs, or conjunctions: after, as, before, but, since.