During vs While: Choose by Time Period or Action
In Part 5-style sentences, during and while can both connect ideas in time. The structure immediately after the blank usually tells you which one fits.
The practical choice is not “Can I explain the grammar?” It is: after the blank, do I see a noun phrase naming a time/event, or a clause showing what happens at that time?
The decision check
Look immediately after the blank.
During
Use it before a noun or noun phrase naming a period or event: during the meeting, during business hours, during the inspection, during the renovation.
While
Use it as a conjunction before a clause: while the presenter is speaking, while the system is being repaired, while customers are waiting.
The signal to remember
The presentation is a noun phrase naming an event.
The presenter is speaking is a clause.
The renovation is a noun phrase naming a period/event.
Workers renovate the entrance is a clause.
What to notice
The distinction is structural. During is a preposition and normally comes before a noun or noun phrase. While is a conjunction when it means “during the time that”, so it introduces a clause.
Choose during
Look for a noun phrase: the meeting, the presentation, business hours, the inspection, the renovation, the trip.
Choose while
Look for a clause: the manager reviews the report, workers are repairing, customers are waiting, the system is updating.
Do not rely on a broad translation alone. Check the grammatical shape after the blank.
Quick TOEIC check
Choose first. Then read the source feedback. Use the same structure check each time: noun phrase, or clause?
1. Please keep your phone off ___ the presentation.
Correct: during
The signal is the presentation. It is an event, so choose during.
Not quite.
The words after the blank are the presentation, not something happening. Choose during.
2. Please keep your phone off ___ the presenter is speaking.
Not quite.
The signal is the presenter is speaking. Something is happening at that time. Choose while.
Correct: while
The sentence shows an action happening at the same time.
3. The lobby will be closed ___ the renovation.
Correct: during
The signal is the renovation. It is a period/event, so choose during.
Not quite.
The words after the blank are the renovation, not something happening. Choose during.
4. The lobby will be closed ___ workers replace the flooring.
Not quite.
The signal is workers replace the flooring. Something is happening at that time. Choose while.
Correct: while
The sentence shows what workers are doing at the same time.
The mistake fast readers make
A broad translation can make both words feel similar. The reliable signal is the structure after the blank.
Weak choice
Choose because both words seem to express “during that time”.
Better choice
Check whether the blank is followed by a noun phrase or a clause.
This is the MTC move: avoid the grammar maze, find the signal, make the decision and move on.
Why this mistake can return under pressure
If you know during and while during review but still miss them in timed practice, the issue may be the speed or consistency of your structure check rather than the meanings alone.
Use small TOEIC mistakes as a diagnostic
If you know the answer after review but miss it during timed practice, the problem may not be the word alone. It may be your decision pattern.
Start with the Learning Block Diagnostic to explore whether repeated mistakes connect to Speed Trap, Memoriser, Over Thinker, Translator, Passive Listener or Burnout. One missed item alone is not enough evidence to identify a Learning Block.
Continue reading
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