AR15J
sometimes it works as a dummy subject
Hi AR15J, it is slightly fallacious to think of
it as
not referring to anything. That is very
unlikely to happen on GMAT.
However, a unique feature about
it is that
it can appear
before the antecedent (the
noun/noun-phrase that
it is referring to). For example:
It takes great courage to prevail amidst uncertainty. A casual look at the above sentence might suggest that
it does
not refer to any noun. However, a closer look would reveal that
it does refer to a phrase (
to prevail amidst uncertainty) that appears
later in the sentence. The sentence basically is:
It (to prevail amidst uncertainty) takes great courage. In fact, there typically are following two scenarios when a pronoun can appear
before the antecedent:
i) When the pronoun appears as a part of the introductory modifier
ii) Pronoun “
it” appearing before the antecedent Sometimes
p.s. Our book
EducationAisle Sentence Correction Nirvana discusses
both the above scenarios, their application and examples in significant detail. If someone is interested, PM me your email-id; I can mail the corresponding section.