The same word can be used as different parts of speech. Always remember that it is the function that determines which part of speech the word belongs to.
Study the examples given below
About can be used as an adverb and a preposition.
- They wandered about in sheepskins. (About)
- There is something attractive about him. (Preposition)
The word above can be used as an adverb, an adjective, a preposition and a noun. Examples are given below.
- The heavens showered blessings from above. (Adverb)
- She is above average in intelligence. (Preposition)
- Study the above sentence. (Adjective)
The word after can be used as an adverb, a preposition, an adjective and a conjunction.
- They arrived soon after. (Adverb)
- He takes after his father. (Preposition)
- He went to the US after he finished his studies. (Conjunction)
All can be an adjective, an adverb or a pronoun.
- All lights were out. (Adjective)
- He lives all alone. (Adverb)
- All is lost. (Pronoun)
Any can be an adjective or an adverb.
- Has she got any friends? (Adjective)
- Is he any better? (Adverb)
As can be an adverb or a conjunction.
- He ran as fast as he could. (Adverb)
- As he was poor he could not send his children to school. (Conjunction)