Subordinating conjunctions connect ideas in a sentence by linking a dependent clause to an independent clause. They show relationships such as time, reason, condition, contrast, or place, which helps sentences sound clearer and more natural rather than short and disconnected.
Subordinating Conjunctions
Subordinating conjunctions play an important role in forming complex sentences. A complex sentence includes one independent clause and at least one dependent clause. The dependent clause cannot stand alone and depends on the independent clause to complete its meaning.
General Structure of a Complex Sentence
Subordinating conjunction + dependent clause, independent clause.
Independent clause + subordinating conjunction + dependent clause.
The Comma Rule
- When the dependent clause comes first, use a comma.
Because it was raining, we stayed home. - When the dependent clause comes after the independent clause, a comma is usually not needed.
We stayed home because it was raining.
Common Subordinating Conjunctions
Time
Used to show when something happens.
- After
- Before
- Once
- Since
- Until
- When
- Whenever
- While
Example: We can go outside after we finish our homework.
Place
Used to show where something happens.
- Where
- Wherever
Example: We can sit wherever we like in the classroom.
Cause or Reason
Used to explain why something happens.
- As
- Because
- Since
- Now that
Example: We stayed inside because it was cold outside.
Condition
Used to show under what condition something happens.
- If
- Unless
- Provided (that)
- Even if
Example: If we study hard, we will pass the exam.
Comparison
Used to compare people or things.
- As
- Than
Example: She is as confident as her sister.
Contrast or Concession
Used to show contrast or an unexpected result.
- Although
- Even though
- Though
- Whereas
- While
Example: Although it was raining, we went to the park.
Last Updated on January 23, 2026
