1. Jesus Christ offers us eternal life.
Subject--Verb--Indirect Object--Direct Object
“Jesus Christ” is the subject (it is the doer of the main action), “offers” is the verb (it indicates an action in present), “us” is the indirect object (it is the person that receives the direct object, that is, “eternal life”) and lastly, “eternal life” is the direct object (it receives the main action of the sentence)
2. Some riddles are easy to answer.
Subject--Linking Verb--Predicate Adjective
A subject is any noun or pronoun that is being discussed, described, or dealt with in a sentence. “Some riddles” is the subject because it is the main thing being described.
Linking verbs connect the subject of a sentence to a word that identifies or describes the subject, and express conditions or states, like the verbs be, seem, taste, smell, become, sound and feel. In the sentence, “are” connect the subject to “easy to answer,” which is also the predicative adjective because it is an adjective that comes after a linking verb and renames the subject.
3. The deal seems fair.
Subject--Linking Verb--Predicate Adjective
“The deal” is the subject because it is what is being described, “seems” is the linking verb and “fair” is the predicative adjective because it is an adjective that refers back to the subject to rename it.
4. My cousins live by the ocean.
Subject--Verb
This is the most suitable answer because “My cousins” is the subject or doer of the action and “live” the verb. As for “by the ocean,” this is an adverbial complement because it modifies the verb by providing information of place, and can not be removed without changing the sentence's meaning.