Conjunction in Grammar: Definition, Rules, Types and Examples

Julian Mercer
10 Min Read
Conjunction in grammar with rules, usage and examples
Learn conjunction with rules and usage

A conjunction is a word that connects words, phrases, or clauses within a sentence. It gives structure to language by linking ideas smoothly so that communication becomes clear and connected. Without conjunctions, writing and speaking would sound broken or incomplete.

In this lesson, you will study the definition, rules, and types of conjunctions. You will also see examples, common mistakes, and practice exercises to master this important grammar topic.

What is a Conjunction?

A conjunction is a word that joins words, phrases, or clauses to form a connected sentence. It prevents ideas from being broken into short parts and allows smooth communication.
In grammar, conjunctions act as links between thoughts, giving structure and balance to a sentence.

Functions of Conjunctions in Sentences

Conjunctions serve different roles depending on the relationship they show:

  • Addition: Join similar ideas. She likes tea and coffee.
  • Contrast: Show opposition. He is rich, but unhappy.
  • Cause and Effect: Link reasons and results. She was late, so she missed the bus.
  • Choice: Offer alternatives. You may come today or tomorrow.
  • Condition or Time: Mark situations. We waited inside until the rain stopped.
    Did you know? Conjunctions are one of the oldest recorded parts of speech in English, appearing in texts since Old English.

List of Conjunctions

Some commonly used conjunctions include:

CoordinatingSubordinatingCorrelative
andalthougheither…or
orbecauseneither…nor
butsinceboth…and
yetwhilenot only…but also
sowhen 
forbefore 
norafter 
 if 
 unless 
 whether 
 as 
 as if 
 as though 
 even though 
 provided 
 so that 
 in order that 
 than 
 once 
 now that 
 as long as 
 so long as 
 whether or not 
 just as 
 even if 
 whereas 
 in as much as 
 given that 
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    Conjunction Rules

    1. Balance similar parts: Conjunctions join like units.
      • She bought bread and butter.
    2. Avoid double conjunctions: One link is enough.
      • ❌ He left because since he was tired. → ✅ He left because he was tired.
    3. Correct pair use: Correlatives must balance.
      • She is not only smart but also kind.
    4. Subordinating placement: Place before the dependent clause.
      • I will wait until she arrives.
    5. Comma with coordinating conjunctions: Use commas when joining two clauses.
      • I was tired, but I continued working.
    6. Do not join unlike parts: Match grammatical units.
      • ❌ She is tall and honesty. → ✅ She is tall and honest.
    7. Conjunctions and emphasis: A conjunction may start a sentence for effect.
      • But I still believe in you.”

    Types of Conjunction

    Coordinating Conjunctions

    These connect equal parts such as nouns, clauses, or phrases. The seven coordinating conjunctions are remembered as FANBOYS.

    • I wanted to call, but he was asleep.
    • She sings well, and she dances beautifully.
    • You may stay here, or you may leave.
    • It rained, yet we continued playing.
    Coordinating conjunctions with FANBOYS and grammar examples
    FANBOYS explained with examples

    Subordinating Conjunctions

    Subordinating conjunctions join a dependent clause with an independent clause, showing cause, time, or condition.

    • She left early because she was tired.
    • We will wait until the sun sets.
    • He succeeded although the task was difficult.
    • I will not go unless you join me.
    Subordinating conjunctions with grammar rules and examples
    Subordinating conjunctions explained with examples

    Correlative Conjunctions

    Correlative conjunctions work in pairs and require balance on both sides.

    • She is both intelligent and hardworking.
    • He will visit either today or tomorrow.
    • She is not only a teacher but also a writer.
    • They will play whether it rains or shines.
      Did you know? The phrase “either…or” has been in use since the 14th century.

    Use of Conjunction

    Conjunctions help extend sentences, reduce repetition, and add clarity. They show relationships such as choice, cause, contrast, or sequence.
    For example: “He studied well, so he passed his exam.” The word so links cause with result.

    Sentence Structures with Conjunctions

    Conjunctions influence sentence structure:

    StructureConjunction TypeExample
    Compound SentenceCoordinatingShe wanted to rest, but she continued working.
    Complex SentenceSubordinatingWe stayed inside because it was raining.
    Compound-Complex SentenceBothHe was tired, but he stayed until the movie ended because he wanted to finish it.

    Common Mistakes with Conjunctions

    Although it was raining, but we went outside.
    Although it was raining, we went outside.
    (Do not use two conjunctions for one idea.)

    He will either sing or he will dance.
    He will either sing or dance.
    (The correlative pair must be balanced.)

    I don’t know neither him nor his friend.
    I know neither him nor his friend.
    (Avoid double negatives.)

    Conjunctions vs Relative Pronouns

    A conjunction links clauses, while a relative pronoun introduces a clause that describes a noun.

    • Conjunction: She stayed home because she was sick.
    • Relative pronoun: The student who answered first received praise.

    Exceptions and Special Cases

    • Some words act as both conjunctions and other parts of speech, e.g., for as preposition or conjunction.
    • Modern English accepts sentence beginnings with conjunctions for style, though traditional grammar once discouraged it.
    • Certain correlative pairs are flexible in informal use, e.g., “both…as well as” though “both…and” is standard.

    Examples of Conjunctions in Full Sentences

    1. She likes tea and coffee.
    2. He was late, yet he joined the class.
    3. You may come today or tomorrow.
    4. She succeeded although she faced many challenges.
    5. They will leave if the train arrives.
    6. He is not only tall but also strong.
    7. We waited until she returned.
    8. She studied hard, so she passed.
    9. He is both clever and generous.
    10. Either you work hard or you fail.
    11. They stayed home because it was raining.
    12. He sang well, and he danced even better.
    13. Neither John nor Mary was present.
    14. Whether it rains or shines, we will play.
    15. She was tired, but she finished her homework.

    Exercises and Practice Sentences on Conjunctions

    1. Fill in the blank: She left early ___ she was not feeling well.
    2. Identify the conjunction: We will go shopping or stay at home.
    3. Correct the mistake: Although he was tired, but he worked.
    4. Transform: She is clever. She is hardworking. → Use a conjunction.
    5. Choose the right sentence:
      a) She is both kind as well as helpful.
      b) She is both kind and helpful.
    6. Create a complex sentence with because.
    7. Join these clauses: He was hungry. He ate quickly.

    Final Thought

    A conjunction connects ideas smoothly and gives structure to sentences. By learning its types, rules, and exceptions, learners can avoid mistakes and improve accuracy. With practice, conjunctions become natural tools for clear and confident communication.

    FAQs on Conjunctions

    1. What is conjunction and example?

    A conjunction is a word that joins words or sentences.
    Examples:
    1. And
    2. But
    3. Or
    Example sentences:
    1. I like apples and bananas.
    2. She is tired but keeps working.
    3. Do you want tea or coffee?
    Conjunctions connect ideas.

    2. Are words like “however” conjunctions?

    No. However is an adverb, not a true conjunction. But it functions as a connector between sentences.

    3. What is the 10 example of conjunction?

    Here are 10 examples of conjunctions:
    1. And
    2. But
    3. Or
    4. So
    5. Yet
    6. For
    7. Nor
    8. Because
    9. Although
    10. If

    4. Can conjunctions start a sentence?

    Yes. Modern grammar allows it for emphasis. And that is why we agreed.” It should be used sparingly in formal writing.

    5. How many types of conjunctions exist in English?

    There are three: coordinating, subordinating, and correlative. Each type joins parts differently, such as equal ideas or dependent clauses.

    You May Also Like

    Conjunctions Quiz

    Parts of Speech practice

    Conjunctions

    Which is a coordinating conjunction?

    Reasoning

    'And' joins parts of equal weight.

    coordinating conjunctions join equal parts

    bread and butter

    Choose the joiner for contrast.

    I was tired, ___ I kept working.

    Reasoning

    'But' links two contrasting ideas.

    'but' joins contrasting ideas

    I was tired, but I kept working.

    Which is a subordinating conjunction?

    Reasoning

    'Because' opens a clause that depends on the main clause.

    subordinating conjunctions introduce dependent clauses

    We stayed because it rained.

    Choose the correlative pair.

    ___ tea ___ coffee is fine.

    Reasoning

    'Either … or' is a correlative pair offering a choice.

    correlative conjunctions come in pairs

    Either tea or coffee is fine.

    Which sentence uses a subordinating conjunction?

    Reasoning

    'Although' makes the first clause depend on the second.

    subordinating conjunctions make one clause depend on another

    Although it was late, we continued.

    Choose the agreeing verb.

    Neither the teacher nor the students ___ ready.

    Reasoning

    With neither/nor, the verb agrees with the nearer subject, 'students'.

    with neither/nor, the verb agrees with the nearer subject

    Neither the teacher nor the students were ready.

    Which word is a coordinating conjunction?

    Pick the coordinating conjunction.

    Reasoning

    'And' joins words or clauses of equal rank.

    coordinating conjunctions: for, and, nor, but, or, yet, so

    Tea and toast made the meal.

    Which word is a subordinating conjunction?

    Pick the subordinating conjunction.

    Reasoning

    'Because' introduces a dependent clause that gives a reason.

    subordinating conjunctions: because, although, if, when, since

    We stayed in because it was raining.

    Complete the correlative pair.

    You may have ___ tea ___ coffee.

    Reasoning

    'Either' pairs with 'or' to offer a choice between two options.

    correlative pairs: either/or, neither/nor, both/and

    You may have either tea or coffee.

    Which conjunction shows contrast?

    Pick the word that marks contrast.

    Reasoning

    'But' signals a contrast between the two clauses.

    'but' and 'yet' mark contrast

    She trained hard, but she missed the final.

    True or false?

    Coordinating conjunctions join words or clauses of equal rank.

    Reasoning

    Coordinating conjunctions link equal elements, such as two independent clauses.

    coordinating conjunctions link equals

    Bread and butter go together.

    Type the missing conjunction.

    Neither the cat ___ the dog was hungry.

    Reasoning

    'Neither' pairs with 'nor' to link two negatives.

    neither pairs with nor

    Neither the cat nor the dog was hungry.

    Which coordinating conjunction gives a reason?

    Pick the FANBOYS word for reason.

    Reasoning

    'For' is a coordinating conjunction that states a reason and joins clauses of equal rank.

    for = coordinating reason; because, since = subordinating

    He stayed home, for he was ill.

    Which word is a subordinating conjunction?

    Pick the word that opens a dependent clause.

    Reasoning

    'When' introduces a dependent time clause.

    subordinators: when, because, although, if

    When I finish, I'll call you.

    Complete the correlative pair.

    ___ Tom ___ Sam turned up.

    Reasoning

    'Both' pairs with 'and' to link two subjects together.

    correlative pair: both ... and

    Both Tom and Sam turned up.

    Complete the negative pair.

    He doesn't smoke, ___ does he drink.

    Reasoning

    'Nor' continues a negative statement and inverts the verb that follows.

    nor continues a negative clause

    He doesn't smoke, nor does he drink.

    True or false?

    Subordinating conjunctions join a dependent clause to a main clause.

    Reasoning

    A subordinating conjunction links a dependent clause to the main clause it relies on.

    subordinators link dependent to main clauses

    We waited although it was late.

    Name the conjunction type.

    In 'Although it rained, we walked', 'Although' is a ___ conjunction.

    Reasoning

    'Although' opens a dependent clause, so it subordinates.

    although is a subordinating conjunction

    Although it rained, we walked.

    Type the missing conjunction.

    You may take either the bus ___ the train.

    Reasoning

    'Either' pairs with 'or' to offer a choice between two options.

    either pairs with or

    You may take either the bus or the train.

    Choose the contrast conjunction.

    The room was small, ___ comfortable.

    Reasoning

    'Yet' joins two ideas and marks a contrast between them.

    yet coordinates a contrast

    The room was small, yet comfortable.

    Turn on JavaScript for the interactive quiz. The full practice set is shown above.

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    Julian Mercer is the founder of Englishan.com and has spent over a decade helping English learners improve through online lessons and practical writing. Having worked with students across many countries, he knows the questions people repeat, the mistakes that slow progress, and the moments that make English click. On Englishan, he writes about vocabulary, picture vocabulary, grammar, and everyday English to help readers speak with ease, read with less strain, and write with more confidence.