A Sentence That Starts One Way and Then, Well, You See What Happened There
By the BrainSnail editorial team. How these articles are written and checked, and how to tell us when one is wrong.
Beginning a sentence in one grammatical construction and finishing it in another is a fault in careless writing and a deliberate instrument in skilled hands.
What the break looks like
The sentence sets up an expectation with its opening structure and then abandons it, continuing in a construction that does not fit what came before. A subject is introduced and never given its verb. A conditional clause opens and no consequence follows. A list begins and the grammar changes halfway. The reader notices that the sentence does not resolve, though the meaning frequently arrives anyway, which is what distinguishes the device from simple nonsense and what makes it usable deliberately.
Where it occurs naturally
Spontaneous speech produces it constantly:
- •A speaker changes their mind about the sentence midway
- •An interruption redirects the thought
- •A long opening clause is forgotten before the verb arrives
- •Excitement outruns the planning of the sentence
- •The speaker corrects a fact and loses the construction
- •Listeners barely notice, because meaning arrives regardless
Why writers use it on purpose
Deployed knowingly, the broken construction does something no correct sentence can, which is to enact a state of mind rather than describe one. A character whose sentence collapses is shown to be agitated, evasive or thinking faster than they can speak, and the reader experiences the disorder rather than being told about it. Shakespeare uses it for characters under pressure, and the technique is fundamental to stream of consciousness writing, where the aim is to represent thought before it has been tidied into grammar. The effect depends on the surrounding prose being controlled, so that the break registers as deliberate.
The neighbouring devices
Several named effects involve interrupting a sentence and separating them sharpens what each does. Breaking off entirely and leaving the thought unfinished, trusting the reader to complete it, is a distinct device with its own name and is usually marked with a dash or ellipsis. Interrupting oneself to correct or improve a phrase in view of the reader is another. Inserting an unrelated exclamation mid-sentence is a third. What distinguishes the case here is that the sentence continues confidently in a construction the opening did not permit, so nothing is abandoned visibly and the grammar simply does not join up.
How to tell deliberate from accidental
The distinction is not always obvious and editors apply a few practical tests. A deliberate break usually occurs in dialogue, in a first person narrator's voice, or at a moment of clear emotional pressure, and it is isolated rather than typical of the writing around it. An accidental one usually appears in a long sentence with several subordinate clauses, where the writer lost track of the opening, and similar breaks appear elsewhere in the same piece. The commonest accidental version in formal writing is a sentence whose opening phrase describes somebody who never becomes the subject.
The takeaway
Abandoning an opening construction partway and finishing in another is normal in speech, where meaning arrives regardless, and a fault in careless formal writing. Used knowingly it enacts agitation or racing thought rather than describing it, which is why it is central to stream of consciousness prose. Deliberate breaks are isolated and pressured, accidental ones repeat and follow long subordinate clauses.