Parallel structure: lists that change grammatical gear mid-sentence
"The internship involved drafting reports, attending briefings, and she led two workshops." Two -ing phrases and then a full clause.
Why it happens
By the third item you are reading for content rather than form, and the change lands past the point where your attention was. It is the same reason the error is almost always planted in the last item.
See the trap
"The internship involved drafting reports, attending briefings, and ___"
"she led two workshops" — a clause where the pattern established two -ing phrases.
"leading two workshops" — the third item now matches the first two.
How to actually fix it
- 1Write out the shared stem once: "The internship involved ___".
- 2Attach each item to it separately and read all three.
- 3Any item that does not fit the stem cleanly is the one being tested.
Practice this trap · 1 real question
Each of these is a question from the free bank that turns on the mistake above — the trap is the reason its wrong answer looks right. Easiest first.
FAQ
Does parallelism apply outside lists?
Yes — paired constructions like not only/but also, either/or, and both/and require matching forms on each side too, and the SAT tests those as well.
How do I stop repeating this mistake?
Reading the explanation isn't enough — your brain needs to beat the trap on a fresh question. Practice the skill in the kaoshen.co question bank: miss one and it is logged with the exact error, then brought back to you three days later and again after fourteen.
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