There are only three verbs that are always linking verbs: be, become, and seem.
- She is tired.
- He becomes angry when he doesn't get his way.
- She seems sleepy.
However, there are several verbs that can be linking verbs or transitive verbs. These verbs can be divided into two groups.
One group consists of current verbs. These verbs describe states and are sometimes called stative verbs.
They are : appear, be, feel, lie, look, remain, seem, smell, sound, stay, taste
The other group of linking verbs are resulting verbs. These verbs are: become, get, grow, fall, prove, run, turn.
As I wrote, except for three verbs (be, become, and seem), linking verbs can also be transitive. When they are linking verbs, they do not pass the action from the subject to the verb. When they are transitive verbs, the subject passes the action to the object.
He got angry. (Linking)
He got a job. (Transitive)
He feels sick. (Linking)
He feels the child's throat. (Transitive)
She sounds nice. (Linking)
She smells the flower. (Transitive)
For more information look at Grammar Bytes and Katrien Vanassche's site.