This - (closeby - dichtbij) & singular (enkelvoud)This book, this class, this teacher
These - (closeby - dichtbij) & plural (meervoud)
These books, these classes; these teachers
That - (far away - ver weg) & singular (enkelvoud)
That book, that class, that teacher
Those -(far away - ver weg) & plural (meervoud)
Those books, those classes, those teachers