Understanding the parts of speech in a statement is essential to make sure your sentences sound right and are grammatically correct. Let's take a look at how this works:
Correct Usage
Pharmaceutical Sales Reps whose salaries exceed or meet $100,000 a year typically have strong interpersonal skills in addition to relevant coursework and experience in sales, psychology, or life sciences.
This sentence correctly uses the possessive relative pronoun “whose” to introduce a restrictive clause modifying “Pharmaceutical Sales Reps,” ensuring the noun-modifying clause links the reps to their salaries without disrupting sentence structure.
Incorrect Usage
"Pharmaceutical Sales Reps who's salaries exceed or meet $100,000 a year typically have strong interpersonal skills in addition to relevant coursework and experience in sales, psychology, or life sciences."
This version misuses “who’s” (a contraction of “who is” or “who has”) instead of the possessive “whose,” breaking the noun-modifying clause and creating both grammatical and semantic inconsistency.
Correct Usage
"If you are a self-motivated individual who is proficient and knowledgeable, friendly and goal-oriented, trustworthy and kind, the pharmaceutical industry may be worth exploring."
This sentence correctly uses the relative pronoun “who is” to introduce a restrictive clause that directly modifies the noun “individual.” Each paired adjective describes qualities of that individual, and the clause is properly integrated without breaking sentence structure.
Incorrect Usage
"If you are a self-motivated individual whose proficient and knowledgeable, friendly and goal-oriented, trustworthy and kind, the pharmaceutical industry may be worth exploring."
This version misuses the possessive pronoun “whose,” which expects to show possession of a noun, not introduce a descriptive clause. Additionally, it omits the linking verb “is,” leaving the modifier phrase grammatically incomplete and failing to form a proper noun-modifying clause.
Essential Modifier Rules
- Use who only for human antecedents; use that or which for animals or objects.
- Use whose as the possessive form of who only for people; rephrase or use “of which” for non-human possession.
- Avoid confusing who’s (contraction of “who is” or “who has”) with whose (possessive pronoun).
- Use that for restrictive clauses modifying people or things (no commas).
- Use which for non-restrictive clauses modifying things or ideas (set off with commas).
- Use what only in free relative clauses meaning “the thing that…,” never immediately after another noun.
Colloquialisms to Avoid:
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❌ Incorrect: "She's the one that got away."
✅ Correct: "She's the one who got away."
Note: "Who" should be used when referring to people. While "that" is common in speech, it is technically reserved for things or groups—not individuals.
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❌ Incorrect: "It's not what you know; it's who you know that matters the most."
✅ Correct: "It's not what you know; it's who you know who matters the most."
Note: In formal grammar, "who" is the appropriate relative pronoun for people. "That" is acceptable in casual conversation, but for clarity and correctness, use "who" when referring to individuals.
Pro Tip: Some words—such as who, whom, which, and what—can serve as either interrogative pronouns or relative pronouns, depending on how they function in a sentence. As interrogative pronouns, they initiate a direct or indirect question and stand in for the unknown element being asked about—Who is leading the meeting? or Whom did they recommend? In these cases, they operate as part of the question’s core grammatical structure. By contrast, as relative pronouns, these same words introduce dependent clauses that add information about a noun—The colleague who is leading the meeting... or The person whom they recommended... The key distinction lies not in the word itself but in its syntactic purpose: whether it’s launching a question or linking descriptive detail within a sentence.
✅ Correct: "Who on the planning committee will present the final proposal?"
❌ Incorrect: "Whom on the planning committee will present the final proposal?"
"Who" is the subject of the verb "will present." You would rephrase the sentence as: "He will present the final proposal." Since you'd use "he" (a subject pronoun), "who" fits. On the other hand, "Whom" is an object pronoun, but the sentence requires a subject pronoun.
How do we know? Well, just check with substitution: You wouldn’t say "Him will present." You’d say "He will present," confirming the correct form is "who.
✅ Correct: "Whom did the hiring manager select for the leadership role?"
❌ Incorrect: "Who did the hiring manager select for the leadership role?"
Why it's correct:
The subject of the verb "did select" is "the hiring manager," and the missing word is the object of the action. Rephrased: "The hiring manager selected him." Since you'd use "him" (an object pronoun), "whom" is correct. So, that makes the other option incorrect. "Who" in that example is a subject pronoun, but the word is functioning as the object of the verb "select." So, how do you remember when to use "who" or "whom" in this case? Well, all you do is check with substitution: You wouldn’t say "The hiring manager selected he." You’d say "The hiring manager selected him," so once again "whom" is correct.