Quantifiers - Articles and Negative Quantifiers

used when we want to talk about a person or thing for the first time or when other people may not know who or what they are

used before a singular noun that starts with a vowel sound, when we are not talking about a specific person or thing

used when referring to a person or thing that was previously mentioned or one that is identified easily

used to show that there is none or almost none of something

not any of the members of a group of people or things

one or some of a thing or number of things, however large or small

used to indicate the absence or lack of something