Mastering Subordinating Conjunctions and Related Connectors: As, Until, Unless, Before, After, Whether, However, Still, and Yet
Do you sometimes struggle to connect ideas in English in a way that sounds natural and precise? Subordinating conjunctions like as, until, unless, before, after, and whether, along with related connectors such as however and commonly confused words like still and yet, help you express relationships between actions, reasons, conditions, and contrasts clearly. Mastering them will make your speaking and writing far more fluent and professional.
Subordinating conjunctions introduce a dependent clause that cannot stand alone as a sentence. They show relationships such as reason, time, condition, or contrast between two ideas.
1. Using As for Reason, Time, and Manner
As is a versatile conjunction with three common uses:
✅ As the meeting was postponed, we decided to work from home.
✅ All the tickets were sold out as we got there too late.
✅ As they were arriving, we were leaving.
✅ She called as I was getting out of the bath.
✅ She decorated the hall as the manager instructed.
✅ Fill in the form as shown in the example below.
✅ He did as he was told.
2. Using Until / Till for Time
Until (or its informal form till) connects an action to a point in time when it ends. It is commonly used with future actions or past events that continued up to a certain moment.
✅ Let’s wait here till the rain stops.
✅ No one left the room until the talk ended.
✅ I can’t wait until the summer holidays begin.
✅ He was the headmaster until he retired in 1968.
✅ We couldn’t lay the new floor till the plumber had finished.
✍️ Quick Practice — Fill in the blanks with until or till
- Please stay here ________ the manager arrives.
- She didn't leave the office ________ she completed the report.
- We’ll have to wait ________ the traffic clears.
Answers: 1. until / till | 2. until / till | 3. until / till
3. Using Unless for Conditions
Unless introduces a condition that must be met for something else to happen. It means “if not” and is often used in warnings or advice.
✅ Unless you focus on your work, you will not succeed.
✅ She will not score good marks in the test unless she studies hard.
Unless = If not. To check your sentence, try replacing unless with if not. If it makes sense, you’re using it correctly!
4. Using Before and After for Time Sequences
Before indicates that one action happens earlier than another. After indicates that one action happens later than another. Both can be used as conjunctions or prepositions.
✅ I reached the examination hall before the question paper was distributed.
✅ Answer the first question before you proceed further.
✅ We reached the cinema hall after the movie had started.
✅ They started the programme after everyone had arrived.
| Before | After |
|---|---|
| She left the office before the meeting began. | She left the office after the meeting ended. |
| Finish your homework before you watch TV. | You can watch TV after you finish your homework. |
5. Using Whether for Choices and Indirect Questions
Whether is used when there are two possibilities or when expressing doubt between two options. It is often followed by 'or' in correlative structures (pairs of words that work together to connect ideas, such as 'whether... or').
✅ The employees are deciding whether to accept the offer.
✅ We’re not sure whether we’ll stay here for dinner or go somewhere else.
✅ They asked us whether we were married.
✅ There is some doubt as to whether the illness is infectious.
✅ We discussed the issue of whether the curriculum or the teaching methodology needs change.
Use whether...or for clear choices: “I don't know whether to take the train or the bus.” Avoid using if in formal writing for indirect questions with two options.
6. Using However for Manner and Contrast
However has two distinct uses:
✅ I will assist you however I can.
✅ Decorate it however you like.
✅ However you arrange the furniture, it will look great.
✅ Ravi was busy; however, he agreed to come to the dinner for a few minutes.
✅ The temperature exceeds 35 degrees Celsius during the day; however, it falls to 5 degrees at night.
✅ I didn’t prepare the speech; however, I managed to speak fluently.
When however is used as a conjunctive adverb (to show contrast), it must be preceded by a semicolon (or a full stop) and followed by a comma: "I wanted to go; however, I was too tired." If it starts a new sentence, follow it with a comma: "However, the plan succeeded." A comma alone before however creates a comma splice (the error of joining two independent clauses with only a comma).
Common Mistakes: Still vs Yet
Indian English learners often confuse still and yet. Remember:
- Still = continuation of a situation (adverb); also used as a conjunctive adverb meaning nevertheless or even so (e.g., "The hotel was expensive; still, it was worth it.").
- Yet = nevertheless or but (as a coordinating conjunction of contrast).
| ❌ Incorrect | ✅ Correct |
|---|---|
| I yet meet my friends from schooldays. | I still meet my friends from schooldays. |
| It's a small car, still it's surprisingly spacious. (comma splice) | It's a small car; still, it's surprisingly spacious. ✅ It's a small car, yet it's surprisingly spacious. ✅ |
| The weather was cold, still we had a great time. (comma splice) | The weather was cold; still, we had a great time. ✅ The weather was cold, yet we had a great time. ✅ |
✍️ Quick Practice — Choose still or yet
- He has a good job, ________ he never seems to have any money.
- Even at 70, my grandfather ________ enjoys playing cricket.
- She was tired, ________ she finished the project on time.
Answers: 1. yet | 2. still | 3. yet
Summary
Subordinating conjunctions like as, until, unless, before, after, and whether help you express complex ideas with clarity. As shows reason, time, or manner; until marks the end of an action; unless introduces a necessary condition; before and after sequence events; whether presents choices; and however can work as a related connector for manner or contrast. Additionally, use still for the continuation of a situation and yet as a conjunction of contrast — they are not interchangeable.
Key takeaway: Use these conjunctions to make your sentences more precise and professional. Practise them in both speaking and writing to sound more natural and confident in English.