what are the differences between:
this particular people.
this certain people
You're using 'this' with a plural- it should either be 'these' or 'this...person'. People often use 'certain person' when they don't want to give someone's name, but the listener will understand who is being referred to.
Thankss tdol.. how about they use particular? foa an exampl, "that particular person"
It's like saying 'this person especially'