SAT® · Reading and Writing: Boundaries — Between Sentences
Participial Fragments
A participial fragment uses an -ing (or -ed) word that looks like the main action but never finishes as a real verb, so the clause never stands on its own. The fix is either to attach it to a full sentence with a comma or to give it a finite verb.
An -ing word can describe a noun or it can work as part of a verb, but not both at once in the same slot. 'Hovering above the flowerbed on a hot afternoon' names an action and even a kind of doer, but 'hovering' never commits to a tense. It doesn't say the bird hovers, hovered, or is hovering. It just sits there describing, waiting for a real verb to show up. Read it out loud and your ear catches the dangling feeling at the end: something should happen next, and nothing does.
This is why a phrase can have a subject and an action and still fail to be a sentence. 'The crowd cheering loudly for the winner' has a crowd and cheering, but 'cheering' is a participle, not a finite verb. A finite verb changes with tense and subject: cheered, cheers, has cheered. Swap in one of those and the fragment becomes a sentence instantly. The test exploits exactly this gap, offering tempting choices like 'cheering' or 'to cheer' alongside the one finite verb that actually finishes the thought.
This sits right next to run-ons and comma splices in the boundaries unit because all three are about where a sentence legally starts and stops. Run-ons and splices glue too many complete sentences together; participial fragments offer you a piece that was never complete to begin with. Once you can hear the missing finite verb, you can fix a fragment two ways: attach it with a comma to a main clause, or rebuild its verb so it can stand alone.
Key terms
- participial fragment
- A word group built around an -ing or -ed form that lacks a finite verb and cannot stand as a sentence.
- finite verb
- A verb form that shows tense and agrees with its subject, such as cheered or has begun.
- participle
- A verb form, often ending in -ing or -ed, used to describe a noun rather than to complete a sentence.
- main clause
- A complete sentence with its own subject and finite verb that a fragment can attach to with a comma.
Watch it explained
- How it worksHow does an -ing word swallow the predicate slot without ever actually filling it?
- Common mistakeWhy isn't 'The crowd cheering loudly for the winner' a sentence when it clearly names a doer and an action?
- Worked exampleWalk me through repairing 'Rising steadily since 1960, the global average sea level' into something complete.
Check yourself
End of topic.