This document provides instruction on English grammar concepts including singular vs. plural nouns, demonstratives (this, that, these, those), and possessive adjectives and pronouns. It explains that most nouns become plural by adding -s, while some irregular nouns have special plural forms. It also describes the uses of demonstratives to refer to things based on their number (singular or plural) and distance from the speaker (near or far). Finally, it outlines possessive adjectives like "my", "your" which are followed by nouns, and possessive pronouns like "mine", "yours" which are not followed by nouns. Examples and exercises are provided to illustrate these concepts.