What Are Subordinate Clauses Definition Types and Examples
Understanding subordinate clauses is essential for writing clear and complex sentences in English. Whether you are preparing for school exams, competitive tests, or improving daily communication, knowing how to identify and use subordinate clauses will boost your grammar skills and make your writing more effective.
| Clause Type | Can Stand Alone? | Example |
|---|---|---|
| Main (Independent) Clause | Yes | The dog barked. |
| Subordinate (Dependent) Clause | No | because it saw a stranger |
What is a Subordinate Clause?
A subordinate clause in English is a group of words with a subject and verb, but it does not express a complete thought. This means it cannot stand alone as a sentence and needs a main clause to make sense. Using subordinate clauses helps you add details, reasons, or conditions to your sentences.
Subordinate Clause vs Main Clause
A main clause, also called an independent clause, expresses a full idea and can be a complete sentence. In contrast, a subordinate clause depends on the main clause for its meaning. Recognizing this difference is important for writing error-free sentences.
| Main Clause | Subordinate Clause |
|---|---|
| The team won the match. | because they practiced daily |
| She will go outside. | if it stops raining |
Types of Subordinate Clauses
There are three main types of subordinate clauses found in English grammar. Each serves a unique role in enhancing your sentences and answers exam questions effectively.
Noun Clauses
A noun clause acts as a subject, object, or complement in a sentence. Example: What she said made us smile.
Adjective Clauses (Relative Clauses)
An adjective clause describes a noun and starts with relative pronouns like who, which, or that. Example: The boy who scored the goal is my friend.
Adverb Clauses
An adverb clause modifies a verb, adjective, or another adverb. It answers how, when, why, or where. Example: I will call you when I reach home.
Connecting Words: Subordinating Conjunctions and Relative Pronouns
Subordinate clauses usually begin with joining words called subordinating conjunctions or relative pronouns. They signal that the clause is giving extra information.
| Subordinating Conjunctions | Relative Pronouns |
|---|---|
| because, if, when, although, since, unless, while | who, whom, whose, which, that |
For a detailed list, visit Subordinating Conjunctions and Relative Pronouns on Vedantu.
Examples of Subordinate Clauses in Sentences
See how subordinate clauses add important details. The subordinate clauses are marked in each example.
We started eating when the guests arrived.
I will help you if you ask.
She left early because she was tired.
The car which is red belongs to my brother.
Although he was busy, he attended the meeting.
I do not know where he lives.
This is the place where we met.
After the rain stopped, we went outside.
Punctuation and Comma Rules with Subordinate Clauses
Comma placement can be confusing. When the subordinate clause comes first, use a comma. When the main clause comes first, usually no comma is needed.
| Position | Example |
|---|---|
| Subordinate Clause First | If you study hard, you will succeed. |
| Main Clause First | You will succeed if you study hard. |
Nonessential or nonrestrictive adjective clauses need commas. Essential ones do not. See Adjective Clause for details.
Quick Tips for Identifying Subordinate Clauses
- A subordinate clause always starts with a subordinating conjunction or relative pronoun.
- It has both a subject and a verb but cannot stand alone.
- If the clause does not make full sense alone, it is a subordinate clause.
- It often provides reasons, details, or conditions in the sentence.
Why Subordinate Clauses Matter in English
Mastering subordinate clauses improves your exam marks, writing fluency, and spoken English. They help you answer questions that need detailed explanations, write essays, and communicate clearly. At Vedantu, we make grammar topics simple and practical for students at all levels.
Practice Sentences: Find the Subordinate Clause
- The teacher smiled because the students performed well.
- When the bell rings, the class will start.
- This is the gift that my mother gave me.
- We did not go out since it was raining.
- Whoever finishes first will get a prize.
Try identifying the subordinate clauses in these sentences. Practicing with more sentences builds confidence for exams and writing tasks. For broader practice, check Complex Sentences and Sentence Structure on Vedantu.
In summary, subordinate clauses let you connect ideas and add detail to your writing. There are noun, adjective, and adverb subordinate clauses, each with clear uses. Learning these will make your spoken and written English richer and more accurate.
FAQs on Subordinate Clauses in English Grammar
1. What is a subordinate clause in English grammar?
A subordinate clause is a group of words that has a subject and a verb but cannot stand alone as a complete sentence. It depends on a main (independent) clause to make full sense.
- It begins with a subordinating conjunction or a relative pronoun.
- It adds extra information such as time, reason, condition, or description.
- Example: Because it was raining, we stayed inside.
2. How is a subordinate clause different from an independent clause?
The key difference is that an independent clause can stand alone as a complete sentence, while a subordinate clause cannot.
- Independent clause: expresses a complete thought (e.g., She finished her homework.)
- Subordinate clause: depends on another clause (e.g., after she finished her homework)
- Together: After she finished her homework, she went to bed.
3. What are the types of subordinate clauses?
The three main types of subordinate clauses are noun clauses, adjective (relative) clauses, and adverbial clauses.
- Noun clause: acts as a noun (e.g., What she said surprised me.)
- Adjective clause: describes a noun (e.g., The book that you gave me is interesting.)
- Adverbial clause: modifies a verb, adjective, or adverb (e.g., We left because it was late.)
4. What words introduce a subordinate clause?
A subordinate clause is introduced by a subordinating conjunction, a relative pronoun, or sometimes a relative adverb.
- Common subordinating conjunctions: because, although, if, when, while, since, unless
- Relative pronouns: who, whom, whose, which, that
- Relative adverbs: where, when, why
5. Can a subordinate clause be a complete sentence?
No, a subordinate clause cannot be a complete sentence because it does not express a full thought on its own.
- Example of incomplete sentence: Although he was tired.
- Correct sentence: Although he was tired, he continued working.
- Using it alone creates a sentence fragment.
6. What is an example of a subordinate clause in a sentence?
An example of a subordinate clause is because she was ill in the sentence: She stayed home because she was ill.
- The clause has a subject (she) and a verb (was).
- It explains the reason for the action.
- It cannot stand alone as a sentence.
7. Where can a subordinate clause appear in a sentence?
A subordinate clause can appear at the beginning, middle, or end of a sentence.
- Beginning: When the bell rang, the students left.
- Middle: The students, who were tired, left early.
- End: We went inside because it was cold.
8. Do subordinate clauses always need a comma?
A subordinate clause needs a comma when it comes before the main clause, but usually not when it comes after.
- Comma needed: If you study hard, you will pass.
- No comma needed: You will pass if you study hard.
- Non-defining relative clauses also require commas (e.g., My brother, who lives in London, is a doctor.)
9. What is the function of a subordinate clause in a sentence?
The function of a subordinate clause is to add extra information and act as a noun, adjective, or adverb in a sentence.
- As a noun: What he said was true.
- As an adjective: The car that I bought is new.
- As an adverb: She smiled when she saw him.
10. What are common mistakes with subordinate clauses?
Common mistakes with subordinate clauses include creating sentence fragments and misusing commas.
- Fragment error: Because I was late. (Incomplete)
- Correct form: Because I was late, I apologized.
- Comma misuse: Adding a comma incorrectly after the main clause when it is not required.
- Forgetting the main clause entirely.
