is always a linking verb

"always" is not a verb at all.

How can you "always"?

http://grammar.ccc.commnet.edu/grammar/verbs.htm#linking

from http://grammar.ccc.commnet.edu/grammar/verbs.htm#verb

i had a question in class and my teacher said it could be a linking verb SOMETIMES

Thr word "always" is an adverb. Always!!

http://dictionary.reference.com/browse/always

i think he said a different word sorry

No, "is" is not always a linking verb. "Is" can be a linking verb when it is used to connect the subject of a sentence with a subject complement, which renames or describes the subject. For example:

- He is a doctor. ("is" links the subject "He" with the subject complement "doctor")

However, "is" can also function as a helping verb in verb phrases to indicate tense or voice. For example:

- She is singing. ("is" is a helping verb indicating present continuous tense)
- The book is being read. ("is" is a helping verb indicating passive voice)

So, while "is" can be a linking verb, it is important to understand that it can also function as a helping verb in certain contexts.