What are quantifers and in which situations are they used?

English as a Second Language English Vocabulary, Grammar and Idioms
1

would you tell me what are quantifers and in which situations are they used?

2

Hi,

Please have a look at these links:

quantifiers: ‘a lot of’, ‘a little’, and ‘a few’
Many vs. some/ much vs. many/ few vs. a little
difference betwen few, a few, a lot, etc.