4

I dont know why, but suddenly I confused with a simple question.

Geometrical reconstruction of object corners becomes possible.

I am doubted whether the subject is plural. any hint is welcome.

8

You have to identify the head of the subject noun phrase:

[ Geometrical reconstruction of object corners ]NP becomes possible.

The head is reconstruction. It's singular, and therefore the whole noun phrase is singular. And as you can see, the head isn't always the word that's closest to the verb!


The basic form of the sentence is as follows:

[ Reconstruction ]NP becomes possible.

As you can see, the noun phrase reconstruction is singular.

To get your sentence, first we add the adjective geometrical:

[ Geometrical reconstruction ]NP becomes possible.

But adding an adjective doesn't change whether it's singular or plural. It's still singular.

Now, we add a complement. The noun reconstruction can take a preposition phrase as a complement, and in your sentence that preposition phrase is of object corners:

[ Geometrical reconstruction of object corners ]NP becomes possible.

But adding a complement doesn't change whether it's singular or plural. It's still singular.

So as you can see, the head is reconstruction, even though that isn't the word that's closest to the verb. Corners is not the head of the noun phrase, so it doesn't matter whether that word is singular or plural.

  • great, for the very clear explanation. – niro Oct 19 '13 at 16:31

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.