Answer:
Linking verbs are italicized, prepositional phrases are in bracket, while predicate adjectives are underlined.
1. Great men <em>are</em> not (always wise).
2. A good name <em>is</em> <u>priceless</u>.
3. The day <em>is</em> <u>cold and dark</u>.
4. We <em>should be</em> <u>reasonable</u>.
5. No one<em> is</em> <u>good</u> (at this).
6. The sword <em>is</em> <u>quick and powerful</u>.
7. The rich man is <u>wealthy</u> (beyond imagination).
8. The sky <em>grew</em> <u>dark</u> (as the storm approached).
9. The hamburger <em>tasted</em> <u>greasy</u>.
10. She <em>remained </em><u>haughty</u> (throughout the entire discussion).
Explanation:
A prepositional phrase is used to modify a verb or a noun and usually begins with a preposition, an object and sometimes a word that modifies the object. A predicate adjective modifies the noun in a sentence and the adjective is usually connected to the subject through a linking verb.
In question 2, the subject, "Good men", is qualified with the adjective, priceless. The linking verb, "is", connects the subject to the adjective. The prepositional phrases usually begins with the preposition.