The object of "for" is the whole of the following clause, and not just the relative pronoun, and that clause should follow the proper rules of subject-verb-object grammar.

Grammar - Eduqas Subject and object. ... Verbs that take objects describe some kind of action rather than a state of being. For example: Ajay plays the big, black grand piano.

Grammar - CCEA Subject and object. ... Verbs that take objects describe some kind of action rather than a state of being. For example: Ajay plays the big, black piano. Teagan watches television.

The 3rd-graders at P.S. 277 in Brooklyn twisted upward in their seats, hands fluttering on outstretched arms like flags atop a pole. As teacher Janet Kennedy recognized them, they marched in turn t… ...

Whom is an object. It replaces him or her.We're supposed to say, "Whom do you love" because the answer is "I love him, or her."We do not say, "I love he or she.". I don't mean to sound pedantic ...

The glamour of grammar: an object lesson. Self-taught teacher Nevile Gwynne's grammar primer has garnered a cult following, and is about to go mainstream with a new, expanded version.