What do you think “is” the best invention in the last 50 years?
Here, the questioner is using a verb “is”.
Do I have to reply with “is”? Which of the followings are grammatically correct?
I think it is a computer. (but, I am not referring one PC) Or, I think it is computers. (here, I am using “is” with a plural noun) Or, I think they are computers. (but, questioner used “is”)
Also, a subject and a verb have to agree in quantity, but, how about complements and object?
My favorite food is bananas.
Here, because food is a singular, it takes a verb is. But, bananas are plural.
Or, another example,
A questioner thinks there is only one of something, saying, “What is it?” Then, do I have to answer, Oh, it is chopped apples. Or, Oh, they are chopped apples.
I always thought, a complement or object has to also agree in quantity with the subject and verb.
Top answer
" Generally, the verb agrees with the subject, and the complement can be either singular or plural. " "It's chopped apples. "
— Philip
" Generally, the verb agrees with the subject, and the complement can be either singular or plural.
" "It's chopped apples.
"
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"The most important invention is the computer." Generally, the verb agrees with the subject, and the complement can be either singular or plural. "What is this I'm eating?" "It's chopped apples. "My favorite food is bananas."