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How does the subject-verb agreement work when a singular noun describes a plural one? Of the following, which sentence is righter?
The computers is a good choice.
The computers are a good choice.
Is there a rule about these types of formations? Please explain.
A subject can be plural while a complement is singular.
We (Mom, Dad, my sister, and I) are a family.
is a good example.
The computers are a good choice.
is the only correct one. Not just "righter".
You cannot use a singular verb for a plural subject (noun). In colloquial English, sometimes the constructions "we was" + [plural nouns] / "there is" + [plural nouns] are used. But this is only colloquial.
Your example *"The computers is a good choice." does not sound right to me. However, "Computers is a good choice" is fine, as an answer to "What shall I study in school?" The "is" there is called "logical agreement", because the subject refers to a single area of study.
Is there a rule for when you can use logical singular agreement even though a subject noun is plural? Not so far as I know. Sometimes it sounds okay, sometimes not.
