Because the roads were flooded, the school opened two hours late.
150 Complex Sentence Examples
Browse a larger categorized library built for this specific writing intent. Search the collection, filter by situation, and compare how the underlying pattern changes with purpose and context.
What to notice in the examples
Complex sentences are valuable because they show hierarchy: the writer signals which idea is central and which idea provides context, limitation, cause, or condition.
- Identify the independent clause first.
- Find the subordinating word or relative pronoun that creates dependency.
- Use punctuation according to clause order and function.
- Keep the dependent clause close to the idea it modifies.
The school opened two hours late because the roads were flooded.
Although the first draft was clear, the conclusion needed stronger evidence.
When the lights dim, the audience becomes quiet.
The editor returned the chapter after she checked every citation.
If the temperature drops below freezing, the valve closes automatically.
The bicycle that I bought last summer still needs a new chain.
While the team waited for approval, the designer prepared two alternatives.
The café, which opened last month, already has a loyal morning crowd.
Since the data came from different years, the comparison requires caution.
Even though the room was crowded, the speaker never raised her voice.
Before the interview begins, test the recorder and confirm consent.
Because the final dataset arrived late, the team postponed the analysis meeting.
The proposal succeeded after the authors narrowed the scope that reviewers had criticized.
'Because the first sample was contaminated, the team repeated the test before reporting the result' is complex because one dependent clause is joined to one independent clause.
Because the server restarted, the upload stopped.
Because the overnight shipment arrived late, the café changed its prep schedule.
Because the overnight shipment arrived late, the researcher marked the claim for review.
Because the overnight shipment arrived late, the editor reopened the final paragraph.
Because the overnight shipment arrived late, two delivery riders still crossed the square.
Because the overnight shipment arrived late, commuters moved toward platform six.
Because the overnight shipment arrived late, the trail crew reopened the lower path.
Because the overnight shipment arrived late, the release will remain paused.
Because the overnight shipment arrived late, the installation will move to next week.
Because the overnight shipment arrived late, the stage team will clear the side aisle.
Because the overnight shipment arrived late, the manager checks every refrigerator seal.
Because the overnight shipment arrived late, the librarian shifts the display tables.
Because the overnight shipment arrived late, the coordinator updates the printed route.
Because the overnight shipment arrived late, the guide keeps the group below the ridge.
Because the overnight shipment arrived late, the support lead assigns a second reviewer.
Because the overnight shipment arrived late, the teacher moves the discussion online.
Because the overnight shipment arrived late, the custodian locks the rear entrance.
Because the overnight shipment arrived late, the volunteer team covers the open desks.
Because the overnight shipment arrived late, the producer shortens the rehearsal block.
Because the overnight shipment arrived late, the driver takes the river road.
Because the overnight shipment arrived late, the analyst leaves the estimate unchanged.
Since the source record was incomplete, the café changed its prep schedule.
Since the source record was incomplete, the researcher marked the claim for review.
Since the source record was incomplete, the editor reopened the final paragraph.
Since the source record was incomplete, two delivery riders still crossed the square.
Since the source record was incomplete, commuters moved toward platform six.
Since the source record was incomplete, the trail crew reopened the lower path.
Since the source record was incomplete, the release will remain paused.
Since the source record was incomplete, the installation will move to next week.
Since the source record was incomplete, the stage team will clear the side aisle.
Since the source record was incomplete, the manager checks every refrigerator seal.
Since the source record was incomplete, the librarian shifts the display tables.
Since the source record was incomplete, the coordinator updates the printed route.
Since the source record was incomplete, the guide keeps the group below the ridge.
Since the source record was incomplete, the support lead assigns a second reviewer.
Since the source record was incomplete, the teacher moves the discussion online.
Since the source record was incomplete, the custodian locks the rear entrance.
Since the source record was incomplete, the volunteer team covers the open desks.
Since the source record was incomplete, the producer shortens the rehearsal block.
Since the source record was incomplete, the driver takes the river road.
Since the source record was incomplete, the analyst leaves the estimate unchanged.
Although the first draft looked finished, the café changed its prep schedule.
Although the first draft looked finished, the researcher marked the claim for review.
Although the first draft looked finished, the editor reopened the final paragraph.
Although the first draft looked finished, two delivery riders still crossed the square.
Although the first draft looked finished, commuters moved toward platform six.
Although the first draft looked finished, the trail crew reopened the lower path.
Although the first draft looked finished, the release will remain paused.
Although the first draft looked finished, the installation will move to next week.
Although the first draft looked finished, the stage team will clear the side aisle.
Although the first draft looked finished, the manager checks every refrigerator seal.
Although the first draft looked finished, the librarian shifts the display tables.
Although the first draft looked finished, the coordinator updates the printed route.
Although the first draft looked finished, the guide keeps the group below the ridge.
Although the first draft looked finished, the support lead assigns a second reviewer.
Although the first draft looked finished, the teacher moves the discussion online.
Although the first draft looked finished, the custodian locks the rear entrance.
Although the first draft looked finished, the volunteer team covers the open desks.
Although the first draft looked finished, the producer shortens the rehearsal block.
Although the first draft looked finished, the driver takes the river road.
Although the first draft looked finished, the analyst leaves the estimate unchanged.
Even though the plaza seemed empty, the café changed its prep schedule.
Even though the plaza seemed empty, the researcher marked the claim for review.
Even though the plaza seemed empty, the editor reopened the final paragraph.
Even though the plaza seemed empty, two delivery riders still crossed the square.
Even though the plaza seemed empty, commuters moved toward platform six.
Even though the plaza seemed empty, the trail crew reopened the lower path.
Even though the plaza seemed empty, the release will remain paused.
Even though the plaza seemed empty, the installation will move to next week.
Even though the plaza seemed empty, the stage team will clear the side aisle.
Even though the plaza seemed empty, the manager checks every refrigerator seal.
Even though the plaza seemed empty, the librarian shifts the display tables.
Even though the plaza seemed empty, the coordinator updates the printed route.
Even though the plaza seemed empty, the guide keeps the group below the ridge.
Even though the plaza seemed empty, the support lead assigns a second reviewer.
Even though the plaza seemed empty, the teacher moves the discussion online.
Even though the plaza seemed empty, the custodian locks the rear entrance.
Even though the plaza seemed empty, the volunteer team covers the open desks.
Even though the plaza seemed empty, the producer shortens the rehearsal block.
Even though the plaza seemed empty, the driver takes the river road.
Even though the plaza seemed empty, the analyst leaves the estimate unchanged.
When the platform lights switched on, the café changed its prep schedule.
When the platform lights switched on, the researcher marked the claim for review.
When the platform lights switched on, the editor reopened the final paragraph.
When the platform lights switched on, two delivery riders still crossed the square.
When the platform lights switched on, commuters moved toward platform six.
When the platform lights switched on, the trail crew reopened the lower path.
When the platform lights switched on, the release will remain paused.
When the platform lights switched on, the installation will move to next week.
When the platform lights switched on, the stage team will clear the side aisle.
When the platform lights switched on, the manager checks every refrigerator seal.
When the platform lights switched on, the librarian shifts the display tables.
When the platform lights switched on, the coordinator updates the printed route.
When the platform lights switched on, the guide keeps the group below the ridge.
When the platform lights switched on, the support lead assigns a second reviewer.
When the platform lights switched on, the teacher moves the discussion online.
When the platform lights switched on, the custodian locks the rear entrance.
When the platform lights switched on, the volunteer team covers the open desks.
When the platform lights switched on, the producer shortens the rehearsal block.
When the platform lights switched on, the driver takes the river road.
When the platform lights switched on, the analyst leaves the estimate unchanged.
After the rain moved east, the café changed its prep schedule.
After the rain moved east, the researcher marked the claim for review.
After the rain moved east, the editor reopened the final paragraph.
After the rain moved east, two delivery riders still crossed the square.
After the rain moved east, commuters moved toward platform six.
After the rain moved east, the trail crew reopened the lower path.
After the rain moved east, the release will remain paused.
After the rain moved east, the installation will move to next week.
After the rain moved east, the stage team will clear the side aisle.
After the rain moved east, the manager checks every refrigerator seal.
After the rain moved east, the librarian shifts the display tables.
After the rain moved east, the coordinator updates the printed route.
After the rain moved east, the guide keeps the group below the ridge.
After the rain moved east, the support lead assigns a second reviewer.
After the rain moved east, the teacher moves the discussion online.
After the rain moved east, the custodian locks the rear entrance.
After the rain moved east, the volunteer team covers the open desks.
After the rain moved east, the producer shortens the rehearsal block.
After the rain moved east, the driver takes the river road.
After the rain moved east, the analyst leaves the estimate unchanged.
If the backup test fails, the café changed its prep schedule.
If the backup test fails, the researcher marked the claim for review.
If the backup test fails, the editor reopened the final paragraph.
If the backup test fails, two delivery riders still crossed the square.
If the backup test fails, commuters moved toward platform six.
If the backup test fails, the trail crew reopened the lower path.
If the backup test fails, the release will remain paused.
If the backup test fails, the installation will move to next week.
If the backup test fails, the stage team will clear the side aisle.
If the backup test fails, the manager checks every refrigerator seal.
If the backup test fails, the librarian shifts the display tables.
If the backup test fails, the coordinator updates the printed route.
If the backup test fails, the guide keeps the group below the ridge.
If the backup test fails, the support lead assigns a second reviewer.
Keep the underlying decision or pattern, then replace the subject, evidence, relationship, constraints, and tone with details that belong to your situation. If your final line still works after swapping only one noun, it may be too close to the example.