The answer is:
1. Object of the preposition – noun or noun phrase following a preposition
2. Subject – the main idea or topic of the sentence
3. Predicate noun – the word or phrase in the predicate that renames the subject
4. Direct object – the receiver of the verb’s action
5. Subject of gerund – a possessive word of phrase immediately preceding a gerund subject
6. Indirect object – to or for whom or what something is done
7. Appositive – a word or phrase immediately following and renaming another word or phase
8. Possessive noun – a word or phrase that shows ownership of something or someone
To further illustrate the answer, let us see some examples:
1. Object of the preposition: He is always talking about us. / He is always talking about what he expects from this trip.
2. Subject: He is always talking about us. / Thinking of leaving makes me sad.
3. Predicate noun: Jane is a nurse. / Joseph may become my husband soon.
4. Direct object: I baked a cake just for you.
5. Subject of gerund: Stella’s calling him last night made him regret breaking up with her.
6. Indirect object: I baked a cake just for you.
7. Appositive: My pet, a cat, is always bringing me dead bugs.
8. Possessive noun: My pet, a cat, is always bringing me dead bugs.