Relative pronouns (who, whom, which, that, whoever, whomever, whatever) have a connective or relating function in a sentence and introduce adjectival clauses. Relative pronouns also act as subjects, direct objects, or objects of prepositions within an adjectival clause. They usually directly follow the noun to which they are relating the second half of the sentence.

Examples: She looked at the man whom* she loved.
The dog chased the cat that had just scratched the little boy.
The seal dived into the ocean, which was turbulent and frothy.

*Note: To choose correctly among the forms of who, re-phrase the sentence so you choose between he and him. If you want him, write whom; if you want he, write who. (See table below.)

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	Subject Form	Possessive Form	Objective Form
Singular	He = Who	His = Whose	Him = Whom
Plural	They = Who	Their = Whose	Them = Whom

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Examples: Who do you think is responsible? (Do you think he is responsible?)
Whom shall we ask to the party? (Shall we ask him to the party?)
Give the box to whomever you please. (Give the box to him.)
Whoever shows up first will win the prize. (He shows up first.)