Is it ungrammatical? Unacceptable? Would you say a phrase like this? and if so, in what context? Do you need a clear context to say it?
Thank you for your help!
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Sign up to join this communityIs it ungrammatical? Unacceptable? Would you say a phrase like this? and if so, in what context? Do you need a clear context to say it?
Thank you for your help!
Grammatically it's correct, and talking about context, it could be used if you are talking with a person who doesn't know what a computer is, an you say "A computer is a very useful tool..."
It's perfectly grammatical and colloquial. It means that computers, as a concept or as a whole, are useful tools, but it might be that the speaker is implying that the listener should acquire a computer
"The computer is a …" would either mean the former, or it might be referring to a specific computer being useful.