* am
* is
* are
* was
* were
* been
* being
These verbs connect the subject of a sentence to a noun, pronoun, or adjective that renames or describes the subject.
Examples:
* She is a doctor. (connects the subject "She" to the noun "doctor")
* The sky was blue. (connects the subject "sky" to the adjective "blue")
* They have been friends for years. (connects the subject "They" to the noun "friends")
Remember, linking verbs do not show action. They simply link the subject to a word or phrase that tells us more about the subject.