(Who,Whom) is on the phone?It is (me,I).这里应该是it is me 还是I,我看

(Who,Whom) is on the phone?It is (me,I).这里应该是it is me 还是I,我看到一个知识点是 Nominative case pronouns are I,she,he,we,they,and who.They are used as subjects,predicate nominatives,and appositives when used with a subject or predicate nominative..那么因为在在这里 i 是 predicate nominatives,也就是说应该是I 可是如果按这个说法的话 不就只有It is I,没有it is me 这个句子了吗?