📒 used with uncountable nouns or plural countable nouns to mean ‘an amount of’ or ‘a number of’, when the amount or number is not given
📒 used to refer to certain members of a group or certain types of a thing, but not all of them
📒 a large number or amount of something
📒 a small amount or number of something
📒 used with singular nouns to refer to a person, place, thing or time that is not known or not identified
📒 used to express a positive or negative opinion about somebody/something