|A linking verb links a noun or adjective in the predicate to the subject. Forms of the verb be are the most common linking verbs. Linking verbs can be used in all three tense.
Present: My mother is a doctor. Here, is links the subject (mother) with a noun (doctor).
Past: The store was very busy last night. Here, was links the subject (store) with an adjective (busy).
Future: Tomorrow will be my birthday. Here, will be links the subject (tomorrow) with a noun (birthday).
Directions: For each sentence, choose the verb that links the underlined words.