Question

Are these sentence's correctly punctuated?
The motor vehicle accident, however, was not the patient's fault.

Dr. Jones is an excellent surgeon, but does not have a good bedside manner.

She was tried on various antibiotics, and an infectious disease specialist was called in to advise on this.

Answer 1

The first and third are punctuated correctly. But there should not be a comma after surgeon in the second sentence. The words after but is a dependent clause so is not set off by a comma.