time being in the objective case; as,
John slipped and hurt _himself_.
The _relative_ pronoun is so called because it relates or refers to
another word, called its antecedent, to which it joins the clause that
it introduces. The relative pronouns are _who_, _which_, _what_, _that_;
and the compound relatives are _whoever_, _whosoever_, _whichever_,
_whichsoever_, _whatever_, _whatsoever_.
They are declined as follows:
_Singular and Plural_
_Nom._ who which whoever whosoever
_Poss._ whose of which whosever whosesoever
_Obj._ whom which whomever whomsoever
_That_, _what_, _whichever_, _whichsoever_, _whatever_, and _whatsoever_
are not declined. They have the same form in the nominative and
objective cases, and are not used in the possessive case.
_What_ is peculiar in that it never has an antecedent expressed, but
itself stands for both antecedent and relative. It is called the _double
relative_. Compare the following:
I did not hear _the words that_ he said.
I did not hear _that which_ he said.
I did not hear _what_ he said.
_That_ is called the restrictive relative, because it limits or
restricts its antecedent to the meaning expressed in the clause
introduced by _that_. A restrictive clause is one, therefore, that is
needed to make the meaning of the sentence clear. Compare the following:
_Non-restrictive_: John Brown, _who_ has no disease,
needs no physician.
_Restrictive_: He _that_ hath no disease needs no
physician.
Notice that a restrictive, or necessary, clause is not separated from
the rest of the sentence by commas.
_Who_ and _which_ are sometimes used with restrictive force; as,