I used the word 'relative' to describe quantifiers because to perceptions of amount differ person to person. By using those words we have a relative understand of the quantity present. The words 'several, many, and few' are examples of quantifiers. Quantifiers are a bit different because they let us know how many or how much something is. It is telling which specific bus that group needs to board. In this sentence, the word 'that' is the determiner. Any example sentence for a specific use could be: That is the bus we need to be on. They point out certain qualities that were not part of sentence before they were present.
The effective use of determiners is to add specificity to your writing. It really depends on the writing form you are using. Determiners can be used in a general or specific manner. Most of the time, we don’t even realize that we are using them. The Effective Use of Determiners and Quantifiers
