Flagship example library

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.

Before you copy

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.
Showing examples
1
Editor picks

Because the roads were flooded, the school opened two hours late.

2
Editor picks

The school opened two hours late because the roads were flooded.

3
Editor picks

Although the first draft was clear, the conclusion needed stronger evidence.

4
Editor picks

When the lights dim, the audience becomes quiet.

5
Editor picks

The editor returned the chapter after she checked every citation.

6
Editor picks

If the temperature drops below freezing, the valve closes automatically.

7
Editor picks

The bicycle that I bought last summer still needs a new chain.

8
Editor picks

While the team waited for approval, the designer prepared two alternatives.

9
Editor picks

The café, which opened last month, already has a loyal morning crowd.

10
Editor picks

Since the data came from different years, the comparison requires caution.

11
Editor picks

Even though the room was crowded, the speaker never raised her voice.

12
Editor picks

Before the interview begins, test the recorder and confirm consent.

13
Editor picks

Because the final dataset arrived late, the team postponed the analysis meeting.

14
Editor picks

The proposal succeeded after the authors narrowed the scope that reviewers had criticized.

15
Editor picks

'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.

16
Editor picks

Because the server restarted, the upload stopped.

17
Everyday

Because the teacher posted the rubric, the train reached the station.

18
Everyday

Although the teacher posted the rubric, the train reached the station.

19
Everyday

When the teacher posted the rubric, the train reached the station.

20
Everyday

If the teacher posted the rubric, the train reached the station.

21
Everyday

Because the librarian reserved the study room, mira closed the kitchen window.

22
Everyday

Although the librarian reserved the study room, mira closed the kitchen window.

23
Everyday

When the librarian reserved the study room, mira closed the kitchen window.

24
Everyday

If the librarian reserved the study room, mira closed the kitchen window.

25
Everyday

Because the class completed the practice quiz, the neighbor returned the borrowed ladder.

26
Everyday

Although the class completed the practice quiz, the neighbor returned the borrowed ladder.

27
Everyday

When the class completed the practice quiz, the neighbor returned the borrowed ladder.

28
Everyday

If the class completed the practice quiz, the neighbor returned the borrowed ladder.

29
Everyday

Because the tutor explained the equation, a cyclist crossed the bridge.

30
Everyday

Although the tutor explained the equation, a cyclist crossed the bridge.

31
Everyday

When the tutor explained the equation, a cyclist crossed the bridge.

32
Everyday

If the tutor explained the equation, a cyclist crossed the bridge.

33
Everyday

Because the editor marked the repeated sentence, the baker packed the morning orders.

34
Everyday

Although the editor marked the repeated sentence, the baker packed the morning orders.

35
Everyday

When the editor marked the repeated sentence, the baker packed the morning orders.

36
Everyday

If the editor marked the repeated sentence, the baker packed the morning orders.

37
Everyday

Because the analyst updated the forecast, the dog carried the red ball.

38
Everyday

Although the analyst updated the forecast, the dog carried the red ball.

39
Everyday

When the analyst updated the forecast, the dog carried the red ball.

40
Everyday

If the analyst updated the forecast, the dog carried the red ball.

41
School

Because our team documented the final decision, the student revised the final paragraph.

42
School

Although our team documented the final decision, the student revised the final paragraph.

43
School

When our team documented the final decision, the student revised the final paragraph.

44
School

If our team documented the final decision, the student revised the final paragraph.

45
School

Because the manager approved the revised timeline, the teacher posted the rubric.

46
School

Although the manager approved the revised timeline, the teacher posted the rubric.

47
School

When the manager approved the revised timeline, the teacher posted the rubric.

48
School

If the manager approved the revised timeline, the teacher posted the rubric.

49
School

Because the designer shared the prototype, the librarian reserved the study room.

50
School

Although the designer shared the prototype, the librarian reserved the study room.

51
School

When the designer shared the prototype, the librarian reserved the study room.

52
School

If the designer shared the prototype, the librarian reserved the study room.

53
School

Because the coordinator sent the agenda, the class completed the practice quiz.

54
School

Although the coordinator sent the agenda, the class completed the practice quiz.

55
School

When the coordinator sent the agenda, the class completed the practice quiz.

56
School

If the coordinator sent the agenda, the class completed the practice quiz.

57
School

Because the engineer tested the backup system, the tutor explained the equation.

58
School

Although the engineer tested the backup system, the tutor explained the equation.

59
School

When the engineer tested the backup system, the tutor explained the equation.

60
School

If the engineer tested the backup system, the tutor explained the equation.

61
School

Because the lantern lit the empty hallway, the editor marked the repeated sentence.

62
School

Although the lantern lit the empty hallway, the editor marked the repeated sentence.

63
School

When the lantern lit the empty hallway, the editor marked the repeated sentence.

64
School

If the lantern lit the empty hallway, the editor marked the repeated sentence.

65
Workplace

Because the detective opened the sealed envelope, the analyst updated the forecast.

66
Workplace

Although the detective opened the sealed envelope, the analyst updated the forecast.

67
Workplace

When the detective opened the sealed envelope, the analyst updated the forecast.

68
Workplace

If the detective opened the sealed envelope, the analyst updated the forecast.

69
Workplace

Because the musician played the final chord, our team documented the final decision.

70
Workplace

Although the musician played the final chord, our team documented the final decision.

71
Workplace

When the musician played the final chord, our team documented the final decision.

72
Workplace

If the musician played the final chord, our team documented the final decision.

73
Workplace

Because the painter covered the old sign, the manager approved the revised timeline.

74
Workplace

Although the painter covered the old sign, the manager approved the revised timeline.

75
Workplace

When the painter covered the old sign, the manager approved the revised timeline.

76
Workplace

If the painter covered the old sign, the manager approved the revised timeline.

77
Workplace

Because the child followed the silver footprints, the designer shared the prototype.

78
Workplace

Although the child followed the silver footprints, the designer shared the prototype.

79
Workplace

When the child followed the silver footprints, the designer shared the prototype.

80
Workplace

If the child followed the silver footprints, the designer shared the prototype.

81
Workplace

Because the storm shook the loose shutters, the coordinator sent the agenda.

82
Workplace

Although the storm shook the loose shutters, the coordinator sent the agenda.

83
Workplace

When the storm shook the loose shutters, the coordinator sent the agenda.

84
Workplace

If the storm shook the loose shutters, the coordinator sent the agenda.

85
Workplace

Because the council approved the tree-planting plan, the engineer tested the backup system.

86
Workplace

Although the council approved the tree-planting plan, the engineer tested the backup system.

87
Workplace

When the council approved the tree-planting plan, the engineer tested the backup system.

88
Workplace

If the council approved the tree-planting plan, the engineer tested the backup system.

89
Creative

Because the clinic mailed the appointment reminders, the lantern lit the empty hallway.

90
Creative

Although the clinic mailed the appointment reminders, the lantern lit the empty hallway.

91
Creative

When the clinic mailed the appointment reminders, the lantern lit the empty hallway.

92
Creative

If the clinic mailed the appointment reminders, the lantern lit the empty hallway.

93
Creative

Because the museum opened the new exhibit, the detective opened the sealed envelope.

94
Creative

Although the museum opened the new exhibit, the detective opened the sealed envelope.

95
Creative

When the museum opened the new exhibit, the detective opened the sealed envelope.

96
Creative

If the museum opened the new exhibit, the detective opened the sealed envelope.

97
Creative

Because the volunteers sorted the donated books, the musician played the final chord.

98
Creative

Although the volunteers sorted the donated books, the musician played the final chord.

99
Creative

When the volunteers sorted the donated books, the musician played the final chord.

100
Creative

If the volunteers sorted the donated books, the musician played the final chord.

101
Creative

Because the bus driver reported the broken display, the painter covered the old sign.

102
Creative

Although the bus driver reported the broken display, the painter covered the old sign.

103
Creative

When the bus driver reported the broken display, the painter covered the old sign.

104
Creative

If the bus driver reported the broken display, the painter covered the old sign.

105
Creative

Because the gardener watered the young trees, the child followed the silver footprints.

106
Creative

Although the gardener watered the young trees, the child followed the silver footprints.

107
Creative

When the gardener watered the young trees, the child followed the silver footprints.

108
Creative

If the gardener watered the young trees, the child followed the silver footprints.

109
Creative

Because the river carried the fallen branches, the storm shook the loose shutters.

110
Creative

Although the river carried the fallen branches, the storm shook the loose shutters.

111
Creative

When the river carried the fallen branches, the storm shook the loose shutters.

112
Creative

If the river carried the fallen branches, the storm shook the loose shutters.

113
Community

Because the wind moved the dry leaves, the council approved the tree-planting plan.

114
Community

Although the wind moved the dry leaves, the council approved the tree-planting plan.

115
Community

When the wind moved the dry leaves, the council approved the tree-planting plan.

116
Community

If the wind moved the dry leaves, the council approved the tree-planting plan.

117
Community

Because the sun warmed the stone wall, the clinic mailed the appointment reminders.

118
Community

Although the sun warmed the stone wall, the clinic mailed the appointment reminders.

119
Community

When the sun warmed the stone wall, the clinic mailed the appointment reminders.

120
Community

If the sun warmed the stone wall, the clinic mailed the appointment reminders.

121
Community

Because the rain filled the shallow ditch, the museum opened the new exhibit.

122
Community

Although the rain filled the shallow ditch, the museum opened the new exhibit.

123
Community

When the rain filled the shallow ditch, the museum opened the new exhibit.

124
Community

If the rain filled the shallow ditch, the museum opened the new exhibit.

125
Community

Because the tide covered the lower steps, the volunteers sorted the donated books.

126
Community

Although the tide covered the lower steps, the volunteers sorted the donated books.

127
Community

When the tide covered the lower steps, the volunteers sorted the donated books.

128
Community

If the tide covered the lower steps, the volunteers sorted the donated books.

129
Community

Because the frost silvered the garden fence, the bus driver reported the broken display.

130
Community

Although the frost silvered the garden fence, the bus driver reported the broken display.

131
Community

When the frost silvered the garden fence, the bus driver reported the broken display.

132
Community

If the frost silvered the garden fence, the bus driver reported the broken display.

133
Community

Because the train reached the station, the gardener watered the young trees.

134
Community

Although the train reached the station, the gardener watered the young trees.

135
Community

When the train reached the station, the gardener watered the young trees.

136
Community

If the train reached the station, the gardener watered the young trees.

137
Nature

Because mira closed the kitchen window, the river carried the fallen branches.

138
Nature

Although mira closed the kitchen window, the river carried the fallen branches.

139
Nature

When mira closed the kitchen window, the river carried the fallen branches.

140
Nature

If mira closed the kitchen window, the river carried the fallen branches.

141
Nature

Because the neighbor returned the borrowed ladder, the wind moved the dry leaves.

142
Nature

Although the neighbor returned the borrowed ladder, the wind moved the dry leaves.

143
Nature

When the neighbor returned the borrowed ladder, the wind moved the dry leaves.

144
Nature

If the neighbor returned the borrowed ladder, the wind moved the dry leaves.

145
Nature

Because a cyclist crossed the bridge, the sun warmed the stone wall.

146
Nature

Although a cyclist crossed the bridge, the sun warmed the stone wall.

147
Nature

When a cyclist crossed the bridge, the sun warmed the stone wall.

148
Nature

If a cyclist crossed the bridge, the sun warmed the stone wall.

149
Nature

Because the baker packed the morning orders, the rain filled the shallow ditch.

150
Nature

Although the baker packed the morning orders, the rain filled the shallow ditch.

Turn an example into your own writing

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.