The sergeant knows his stuff, but he's not that good an instructor.

He was a good instructor, but I didn't want a thing to do with the other stuff.

Me and one French sergeant almost add up to one good instructor.

But without a good instructor all they are doing is treading water.

Like any good instructor, he was going to l make sure we supplied most of the answers.

In any event, the guides are good and, for the most part, gentle instructors.

I'd throw her out, but she's too good a dance instructor.

Moreover, the student must have good instructors, who emphasize reason over rhetoric.

"Yeah, but that's probably what makes him a good instructor."

I've found it's not always the class presidents and honor students who make good instructors.