The doctor here should be read as doctors (in general). In theory we could say 'An apple a day keeps doctors away' but we don't, because it is a set phrase.A day an apple keep the doctor away.
An apple a day keeps the doctor away.
Why do we cannot use plural form to form a phrase?The doctor here should be read as doctors (in general). In theory we could say 'An apple a day keeps doctors away' but we don't, because it is a set phrase.
As I said, this is a set phrase. We say it that way, full stop. It's not a question of grammar.Why do we cannot use plural form to form a phrase?
I didn't say it wasn't regular usage.It is not the only thing we say that way, though. It is a regular usage; for example:
"The politician who never made a mistake never made a decision" (John Major).
The answer is that English regularly uses the definite article with the singular of the noun to express a generic concept.My question is
Why is the article 'the" added in the sentence above?
Is doctor a specific noun in the sentence?
Yes.Can I say something like this: "The dog has four legs. "
It conveys the same information, but we would use the definite article in a different context: either when speaking of the dog as a biological species, or when referring to a particular dog.Is it same as "A dog has four legs" ?
I cannot understand why "the dog " cannot be used to show a generic expression but "the doctor " does.Yes.
It conveys the same information, but we would use the definite article in a different context: either when speaking of the dog as a biological species, or when referring to a particular dog.
I have just said that it can be so used:I cannot understand why "the dog " cannot be used to show a generic expression but "the doctor " does.
For example: 'The dog has four legs, the penguin has two'.we would use the definite article in a different context: either when speaking of the dog as a biological species, or when referring to a particular dog.
Got it.I have just said that it can be so used:
For example: 'The dog has four legs, the penguin has two'.