The phrase "as it sometimes does" is correct and usable in written English.
You can use it to indicate that something occurs occasionally or under certain circumstances.
Example: "The weather can be unpredictable, as it sometimes does in spring, leading to sudden rain showers."
Alternatives: "as it may occasionally happen" or "as it can sometimes occur".
But as it sometimes does after military campaigns, it may launch its own investigation into how Operation Protective Edge was carried out.
It had simply happened, as it sometimes does.
When that happens to me, as it sometimes does, Larissa is there to stop me.
It was also the draft, as it sometimes does, taking itself way too seriously.
This means that when Aodo's generator breaks down, as it sometimes does, she often doesn't have the money for repairs.
As for the teenagers themselves, texting does not feel invasive as it sometimes does when adult donors receive messages from charities.
If the basketball bus returned to Princeton at 4 30 A.M., as it sometimes did, he would still be at the church by nine-thirty.
During those high-toned dinner discussions, when something difficult or bitter came up, as it sometimes did, you could feel both Maxwell and his wife not only accepting its arrival but almost welcoming it.
Yet if the strike is going to be a political tactic that delivers gains not just for narrow groups of workers but for millions, as it sometimes did in the 70s (many of those participating in the winter of discontent were low-paid women), then unions will have to get better at recruiting and politicising young, insecure, often freelance workers.
I wouldn't quite categorize this as a quirk, but it sometimes does give me pause; do the chickens appreciate that I'm mixing textures and color in an interesting way?
My first thought was to spatchcock it, as I sometimes do with grilled chicken: Remove the backbone and flatten the bird so that it will lie flat on the grill and cook evenly.
