5. The above pronouns, along with is, are usually attracted to the gender of a predicate noun; as, hīc est honor, meminisse officium suum, this is an honor, to be mindful of one's duty.
Is.
[247]. 1. Is often serves as the antecedent of the relative quī. Thus:—
Maximum, eum quī Tarentum recēpit, dīlēxī, I loved Maximus, the man who retook Tarentum.
a. Closely akin to this usage is is in the sense of such (= tālis); as,—
nōn sum is quī terrear, I am not such a person as to be frightened.
b. Note the phrase id quod, where id stands in apposition with an entire clause; as,—
nōn suspicābātur (id quod nunc sentiet) satis multōs testēs nōbīs reliquōs esse, he did not suspect (a thing which he will now perceive) that we had witnesses enough left.
Yet quod alone, without preceding id, sometimes occurs in this use.
2. Is also in all cases serves as the personal pronoun of the third person, 'he,' 'she,' 'it,' 'they,' 'them.'