John being a good teacher, his son never failed.
With pronouns people make sentences like:
He / his / him being a good teacher, his son never failed.
He(subject pronoun) seems more appropriate to me, as John is a subject. Please explain.
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Sign up to join this communityJohn being a good teacher, his son never failed.
With pronouns people make sentences like:
He / his / him being a good teacher, his son never failed.
He(subject pronoun) seems more appropriate to me, as John is a subject. Please explain.
John being a good teacher, his son never failed.
This is a grammatically correct sentence. John being a good teacher is a Gerund_Participial clause (non-finite clause) with John is the explicit subject of the non-finite clause. This clause is a subordinate clause anchored to the matrix clause - his son never failed. There is no direct semantic relationship between the subordinate clause and the matrix clause. The meaning is to be inferred from the context. And here the natural interpretation is causal - his son never failed because John was a good teacher.
But the problem arises when the subject of this subordinate clause is a pronoun. We have to choose the proper case.
He/him being a good teacher, his son never failed. [CORRECT]
His being a good teacher, his son never failed. [INCORRECT]
When the Gerund-Participial clause is non-complement either Nominative or Accusative case of pronoun can occur as the explicit subject of the clause. Genitive case never occurs in non-complement Gerund-Participial clause.
In this particular sentence the Gerund-Participial clause is a supplement, and it is non-complement. And hence using his is incorrect. As an aside the him occurs in informal context.
REFERENCE
The Cambridge Grammar of the English Language page No. 1191 and 1220 and 1265
John being a good teacher, his son never failed.
This sentence is missing something. The placement of the subject means there is currently no significance to the fact that John is a good teacher. It seems obvious that it is meant to be the reason for his son never failing, but nothing links the two. It is also an incomplete sentence, as you would neither say "John his son never failed".
I think it should be:
Being a good teacher, John made sure his son never failed.
or
John, being a good teacher, made sure his son never failed.
These both suggest that John intentionally ensured his son did not fail, perhaps by tutoring him.
If though you wanted to minimise that implication and simply suggest that John's teaching ability had a good effect on his son's performance, you could say:
John being a good teacher meant his son never failed.