The word about can be used in the following ways.
As a preposition
When used as a preposition, about is followed by a noun which acts as its object.
- He doesn’t like to talk about his problem.
- We had a long discussion about music and movies.
As a preposition, about means concerning a particular subject
- I got angry when she said nasty things about my mother.
- She is worried about her health.
- We are talking about your studies.
As an adverb
About is not followed by a noun when it is used as an adverb.
- Children usually rush about.
About can be followed by an infinitive with to.
When you are about to do something, you are just going to do it.
- I was about to have lunch.
- We were about to leave.
In spoken English, about is often used for introducing a subject that you want to discuss.
- About that money I owe you – I should be able to pay you back next week.
- It’s about your son – he’s been misbehaving in class lately.
About is also used for showing that you are guessing at an amount or number.
- About 50 members attended the conference.
- She must be about thirty-five.
About can be used for showing movement.
- The children were playing about the garden.
About can also be used to talk about position in many different parts or areas.
- He would always leave important papers lying about on his desk and then spend hours searching for them.