The phrase "a subject comes" is correct and usable in written English.
It can be used in contexts where you are discussing the arrival or introduction of a topic or theme in a conversation or text.
Example: "When a subject comes up in discussion, it's important to address it thoughtfully."
Alternatives: "a topic arises" or "a theme appears".
A subject comes along – you overhear something curious or something happens to a friend of yours – and it's as if you have an antennae.
He disparages those who have faith in natural understanding or intuition and argues that the only real understanding of a subject comes from long and careful study.
Since I am always prepared to deliver an informed opinion on just about anything, when a subject comes along that I actually know something about, just try shutting me up.
"The bodega as a subject came to me while I was working on Cornershop, and so is something I've been planning in my mind for three years," Sparrow tells Creators.
When using the stset command in Stata to indicate the format of the data, the enter time exp) option was used to define when a subject came under observation for the uptake of cataract surgery; i.e. when they had received a cataract diagnosis and were therefore at risk of, or eligible for, treatment.
If there is a subject you do not have enough knowledge about to teach to your children, consider hiring a certified tutor, or have a friend (perhaps another homeschool parent) with in-depth knowledge of a subject come over and share it with your kids.
A possible subject comes to mind.
Each round a random subject comes up, and one person from the team steps forward, picking an individual Egghead to play against.
When in a group the subject comes up, we shriek with delight at discovering fellow hard-core fans.
When you are ready to come out as an atheist, tell them in a polite manner if the subject comes up.
Light on the subject comes from a most unexpected place -- innovative work on a phenomenon called "lock-in".
