Respuesta :
Here are the answers. The five grammatical structures in which nominative case pronouns should be used are the following: Subject to a sentence or clause, subject of an understood verb in a clause beginning with as or than, appositive to a noun acting as a subject or predicate noun, following the infinitive to be when to be has no expressed subject. Hope this helps.
1. Subject to a sentence or clause,
2. subject of an understood verb in a clause beginning with as or than,
3.appositive to a noun acting as a subject or predicate noun,
4.following the infinitive to be when to be has no expressed subject.