A definite article is a word that specifies a particular noun. In English, the only definite article is "the."

Definite articles help indicate that the noun referred to is unique or already known to the reader or listener.

"The" serves to clarify which specific person, place, or thing is being discussed, distinguishing it from others of the same kind.

The usage of "the" often depends on the context of the conversation or text, helping to convey whether the noun is known or unknown to the audience.

Use "the" when referring to a specific noun that both the speaker and listener are familiar with.

Example: “Please close the door.” (Referring to a specific door)

Use "the" with unique nouns, such as the sun, the earth, or the president.

Example: “The sun rises in the east.”

Use "the" when the noun has already been mentioned in the conversation or text.

Example: “I saw a dog. The dog was barking.”

Use "the" with superlative adjectives to indicate the highest degree.

Example: “She is the smartest student in the class.”

When talking about a whole class of nouns, do not use "the."

Example: “Dogs are loyal animals.” (Refers to dogs in general)

Use "the" when discussing a specific instance or example of a noun.

Example: “The dogs in the park are playing.” (Refers to specific dogs known to the speaker and listener)