Linking verbs connect the subject of a sentence to a noun or adjective that renames or describes it.
Here's an example:
* I shall be happy.
In this sentence, "shall be" links the subject "I" to the adjective "happy." The sentence means that "I" am in a state of being "happy."
Other examples of "shall" as a linking verb:
* They shall be victorious.
* The book shall be a bestseller.
* The party shall be fun.
Note: "Shall" is often used to express future tense, but in these cases, it functions as a linking verb.