I have a question about a sentence below.

we expect about 50% of registered voters to vote in the election.

Is a PP(in the election) a subject complement(is it possible?) or a modifier?

If it is a modifier, does it modify a verb(vote)?

While searching out it, I happened upon a sentence and relating explanation

He was selected (as) chairman.

In this case, was isn’t a linking verb. However, some answered my question like the following.

"Chairman is a subject complement."

So I can’t understand why it is a subject complement.


1 Answer 1


We expect about 50% of registered voters [to vote in the election].

It’s not a complement but a modifier. The PP "in the election" is an adjunct in clause structure, i.e. it modifies "vote".

The whole sentence is a catenative construction in which the bracketed subordinate infinitival clause is complement of the catenative verb "expect". The intervening NP "about 50% of registered voters" is the syntactic object of "expect" and the understood (semantic) subject of the subordinate clause.

He was selected (as) chairman.

In this passive construction the 'bare role' NP “chairman” is predicative complement in that it relates to a predicand, here the subject “he”. “As” is optional”: if it is included the PP “as chairman” is called a marked predicative complement and "chairman" is called a predicative oblique because it is related to the verb via the preposition "as".

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