Micro-listening
Subordinating Conjunctions: Connect Ideas Clearly
What are subordinating conjunctions?
Subordinating conjunctions, including 'because', 'although', 'if' and 'so that', link a dependent clause to a main clause and show reason, condition, contrast, time or purpose. For example, 'Although the room was crowded, we found two seats.' Use a comma after an opening dependent clause, and normally omit it when the main clause comes first.
Key points
- Subordinating conjunctions introduce dependent clauses.
- Choose connectors according to the intended relationship.
- Opening dependent clauses need a following comma.
- Future time clauses use the present tense.
This lesson has 5 stages. You can stop at any time and continue later.
At a glance
| Form | Use it for | Example |
|---|---|---|
| because or since | Shows a cause or reason. | Since the road was closed, we took another route. |
| if or unless | Shows a condition or exception. | Unless the alarm stops, we will leave. |
| although or even though | Shows an unexpected contrast. | Even though it rained, the match continued. |
| when, before or after | Places events in time. | Call me after the presentation ends. |
| so that | Shows an intended purpose. | She spoke slowly so that everyone could follow. |
Stage 1 of 5
Understand
What it means, when to use it, and mistakes to avoid.
The full explanation
A subordinating conjunction links a dependent clause to an independent clause. The dependent clause contains a subject and a predicate, yet it cannot stand alone as a complete sentence because the conjunction creates an unfinished thought. The main clause provides the central fact that completes the message.
Although our budget was tight, we bought high quality microphones for the podcast studio.
Why it works: Although shows an unexpected contrast between having limited funds and purchasing premium equipment.
3 more examples
-
We will reschedule the client review if our lead designer remains sick tomorrow morning.
If introduces a conditional dependent clause after the main clause, so no comma appears before it.
-
Elena updated the inventory spreadsheet so that the warehouse crew could pack orders quickly.
So that explains the purpose behind updating the spreadsheet rather than a past cause.
-
Because our flight arrived early, we caught the midday express bus into the city.
Because introduces an opening dependent clause that gives the reason, followed by a comma.
Read the full guide
Separate a Complete Idea from a Dependent Clause
Every complete sentence expresses an independent message with a subject and a verb. When you attach a subordinating conjunction to that sentence, you convert it into a dependent clause. That dependent clause can no longer stand alone because listeners expect a main clause to complete the thought. Notice how adding a connector creates an expectation that you must resolve with a full statement.
-
The train departed on time.
Why it works: This sentence stands alone as an independent clause with a complete meaning.
-
Although the train departed on time, we arrived late.
Why it works: Adding although makes the first clause dependent, requiring the second clause to complete the sense.
Your turn
Which word group can stand alone as a complete sentence?
Answer: Our office printer ran out of ink yesterday.
Show the answer
Answer: Our office printer ran out of ink yesterday.
Removing the subordinating conjunction leaves an independent clause that makes complete sense on its own.
Give Clear Reasons with Because and Since
When you need to explain the cause of an event, use because or since. Because emphasizes the direct cause or answer to a why question. Since often introduces a reason that both speakers already understand or accept. Place the reason first when you want to establish the background before stating the main result.
-
Because the software update failed, our team restored the previous version.
Why it works: Because provides the direct cause for restoring the older software.
-
Since everyone is present, we can begin the quarterly review.
Why it works: Since refers to an acknowledged fact that justifies starting the meeting.
You can practise this again in Subordinating conjunctions: connect your ideas clearly and Compound Conjunctions: How to Link Ideas.
Your turn
Choose the sentence that correctly explains a direct cause.
Answer: Marcus stayed home because he caught a fever.
Show the answer
Answer: Marcus stayed home because he caught a fever.
The conjunction because correctly links the illness as the direct reason for staying home.
State Conditions with If and Unless
A condition specifies what must happen before an outcome can occur. Use if to show that an outcome depends on a specific positive situation. Use unless when you want to say except if or if not. Remember that unless already carries a negative condition, so adding an extra negative word inside the clause will create confusion.
-
If you confirm the reservation today, we will hold the meeting room.
Why it works: If shows the exact positive condition required to reserve the room.
-
Unless our supervisor approves the overtime, we will finish tomorrow.
Why it works: Unless means if our supervisor does not approve the overtime.
Your turn
What does the sentence 'Unless our team wins this match, we cannot reach the finals' mean?
Answer: If our team does not win this match, we cannot reach the finals.
Show the answer
Answer: If our team does not win this match, we cannot reach the finals.
The conjunction unless means except if or if not, setting a negative condition.
Show Surprising Contrasts with Although and Even Though
When two facts seem surprising or contrary to expectation, connect them with although or even though. Even though adds stronger emphasis to the contrast than although. Both connectors prepare the listener for an unexpected outcome, showing that the fact in the main clause happened despite the obstacle in the dependent clause.
-
Although the route was steep, the hikers reached the summit before dusk.
Why it works: Although contrasts the steep difficulty with the successful early arrival.
-
Even though Maya practiced for weeks, she felt nervous on stage.
Why it works: Even though stresses that extensive practice still did not remove her nervousness.
Your turn
Which conjunction best highlights an unexpected contrast?
Answer: Although
Show the answer
Answer: Although
Although establishes that two connected facts are surprising or opposite in expectation.
Place Events in Time with When, Before, and After
Time conjunctions tell your listener when an action occurs relative to another event. Use when for a single specific point in time or simultaneous events. Use before to show that the main action happens earlier, and after to show it happens later. In future contexts, use the present tense inside the time clause itself.
-
When the delivery truck arrives, inspect every carton carefully.
Why it works: When links the inspection directly to the moment the truck arrives, using present tense.
-
Before you submit the invoice, verify the tax identification number.
Why it works: Before indicates that verification must happen earlier than invoice submission.
Your turn
Which sentence uses the correct verb tense in the time clause for a future plan?
Answer: We will call you after we land in Chicago.
Show the answer
Answer: We will call you after we land in Chicago.
Subordinate time clauses referring to the future use the simple present tense, not will.
State an Intended Goal with So That
Learners sometimes confuse cause with purpose. Because points backward to a reason that already exists. In contrast, so that points forward to a target or desired result. The clause following so that usually contains a modal auxiliary verb such as can, could, or would to express the intended outcome of the action.
-
We created a shared folder so that everyone could read the draft.
Why it works: So that explains the intended goal of setting up the shared folder.
-
Julian took notes carefully so that he would pass the licensing exam.
Why it works: The modal verb would pairs with so that to describe his goal.
Your turn
Select the sentence that expresses a forward-looking goal rather than a past cause.
Answer: Liam moved closer to the microphone so that the audience could hear clearly.
Show the answer
Answer: Liam moved closer to the microphone so that the audience could hear clearly.
The phrase so that followed by the modal could shows the speaker's future intention.
Punctuate When the Clause Moves
Sentence structure determines where your punctuation belongs. If you begin a sentence with a dependent clause, place a comma directly after it to signal that the main clause is starting. If the main clause appears first, you normally do not need a comma before conjunctions like because, if, when, or so that.
-
After the storm cleared, repair crews restored electricity to the neighborhood.
Why it works: A comma marks the boundary after the introductory dependent clause.
-
Repair crews restored electricity to the neighborhood after the storm cleared.
Why it works: No comma is needed when the main clause introduces the sentence.
Your turn
Which sentence is punctuated correctly?
Answer: If you need an extra key, ask the building manager.
Show the answer
Answer: If you need an extra key, ask the building manager.
An opening dependent clause requires a comma before the main clause begins.
Avoid Redundant Double Connectors
In many languages, speakers use two connectors to balance a sentence, such as pairing although with but, or because with so. English grammar treats this repetition as an error because one subordinating conjunction already establishes the logical connection. Keep only one connector to ensure your writing remains clean, concise, and grammatically accurate.
-
Although the project was challenging, our team completed it on schedule.
Why it works: Correct: Although introduces the contrast, so adding but would be redundant.
-
Because our budget shrank, we reduced travel expenses.
Why it works: Correct: Because establishes the cause, so adding so in the second clause is incorrect.
Your turn
Identify the grammatically correct sentence without redundant connectors.
Answer: Although the task was difficult, we finished early.
Show the answer
Answer: Although the task was difficult, we finished early.
Use although alone; do not combine it with but in the main clause.
Common mistakes
What learners often say, what to say instead, and why.
-
Not this:
Although the room was small, but everyone found a seat.Say: Although the room was small, everyone found a seat.
Although already introduces the contrast; adding but creates a redundant double connector.
-
Not this:
We will start after the director will arrive.Say: We will start after the director arrives.
Future time clauses use the present tense after after, not will.
-
Not this:
Because the printer stopped.Say: Because the printer stopped, we called technical support.
Because creates a dependent clause, so it needs a main clause to complete the thought.
-
Not this:
If the courier arrives, please call meSay: If the courier arrives, please call me.
An opening dependent clause must be followed by a comma before the main clause.
Questions about "Subordinating Conjunctions: Connect Ideas Clearly"
Do I always need a comma when joining two clauses?
No. A comma is required when the dependent clause opens the sentence because it signals where the background information ends and the main idea begins. When the main clause comes first, a comma is normally omitted before conjunctions like because, if, when, or so that unless you are expressing an emphatic contrast.
Because the train was delayed, we missed our connection.
We missed our connection because the train was delayed.
Can I use 'although' and 'but' in the same sentence?
No, you should never use both in the same sentence. Both although and but perform the same logical job of signaling a contrast. Using both words creates an ungrammatical double conjunction. Choose either although at the start of the subordinate clause or but to connect two independent clauses.
Although the weather was chilly, we enjoyed our walk in the park.
The weather was chilly, but we enjoyed our walk in the park.
What is the difference between 'because' and 'so that'?
Use because to show an existing reason or cause that explains why an event occurred. Use so that to express a forward-looking goal, intention, or desired outcome. Sentences with so that usually include modal verbs such as can, could, or would to indicate the intended outcome.
We left early because the highway was closed for repairs.
We left early so that we could secure seats near the front.
Why do we use the present tense after 'when' or 'if' for future events?
In English, adverb clauses of time and condition use the present simple tense even when referring to future actions. The main clause expresses the future action with will or be going to, while the subordinate clause merely sets the time or conditional baseline.
When the inspector arrives tomorrow, show her the updated logs.
If you visit our branch next week, we will introduce the team.
Before you go
Remember this
Subordinating conjunctions show how two ideas interact. Identify whether your dependent clause states a reason, condition, contrast, time, or purpose. Insert a comma after an introductory dependent clause, keep the sentence comma-free when the main clause leads, and never combine two contrast connectors in the same clause pair.
Stage 2 of 5
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Listening 1 of 4
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Read the transcript
If Anna wakes early, our morning jog begins.
If introduces the conditional clause at the beginning, followed by a comma before the main clause.
Listen for
At natural speed these words change shape. Tap one to hear it again.
- The last sound of the first word runs straight into the next word.
- The last sound of the first word runs straight into the next word.
Listen for
At natural speed these words change shape. Tap one to hear it again.
- The last sound of the first word runs straight into the next word.
- The last sound of the first word runs straight into the next word.
Listening 2 of 4
Listen, then type what you hear. Replay as often as you need.
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Read the transcript
Because Eva washed dishes, our kitchen stays tidy.
Because opens the dependent clause to explain the reason why the kitchen remains clean.
Listen for
At natural speed these words change shape. Tap one to hear it again.
- The final t or d is barely said before the next consonant.
Listen for
At natural speed these words change shape. Tap one to hear it again.
- The final t or d is barely said before the next consonant.
Try a longer clip. Listen once, then replay the part you missed.
Listening 3 of 4
Listen, then type what you hear. Replay as often as you need.
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Read the transcript
Although Alex arrived late, our seminar started smoothly. We gave everyone coffee so that visitors could relax.
Although shows contrast at the opening, while so that explains the purpose of serving coffee.
Listen for
At natural speed these words change shape. Tap one to hear it again.
- The last sound of the first word runs straight into the next word.
- The final t or d is barely said before the next consonant.
- The final t or d is barely said before the next consonant.
Listen for
At natural speed these words change shape. Tap one to hear it again.
- The last sound of the first word runs straight into the next word.
- The final t or d is barely said before the next consonant.
- The final t or d is barely said before the next consonant.
Listen for
At natural speed these words change shape. Tap one to hear it again.
- The last sound of the first word runs straight into the next word.
- The last sound of the first word runs straight into the next word.
- The final t or d is barely said before the next consonant.
This clip is longer. Follow the instruction above the answer field.
Listening 4 of 4
Listen, then type the missing words. The rest of the text is already there.
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Read the transcript
When Oliver opens our staging server tomorrow, engineers will inspect every component. Although our previous launch encountered server delays, everyone expects stable performance now. Designers arranged simple layouts so that mobile users easily browse catalogs. We will release updates after clients approve each page design.
Listen for
At natural speed these words change shape. Tap one to hear it again.
- The last sound of the first word runs straight into the next word.
- The last sound of the first word runs straight into the next word.
- The last sound of the first word runs straight into the next word.
Listen for
At natural speed these words change shape. Tap one to hear it again.
- The last sound of the first word runs straight into the next word.
- The last sound of the first word runs straight into the next word.
- The last sound of the first word runs straight into the next word.
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If Anna wakes early, our morning jog begins.
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Describe a recent project or family event where you had to adjust plans. Explain what happened first, why an obstacle occurred, and how everyone reached a good outcome.
Use: subordinating conjunctions: connect ideas clearly
You could start with “Although we planned to start early, our team had to adjust because…”
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