The milk having soured, Martha drank her coffee black.
Is this sentence a run-on sentence, or is it an (grammatically) acceptable sentence?
The milk having soured, Martha drank her coffee black.
Is this sentence a run-on sentence, or is it an (grammatically) acceptable sentence?
A run-on sentence is one in which two or more independent clauses are joined without correct punctuation or without the use of a conjunction.
The sentence in the example is not a run-on sentence. It has only one independent clause. The milk having soured is an introductory participial phrase and is correctly followed by a comma.
Here's an example of a run-on sentence with two independent clauses:
The milk had soured, Martha had her coffee black.