Conditions Beyond If: Unless, As Long As and Provided That
By the end: I can express exceptions and conditions without changing what is required for a plan or permission.
Try the activities, then check your answers.
Try the activities, then check your answers.
Choose a short recording.
Before you start
What conditions might you attach to lending a friend a piece of equipment?
Useful background: First conditional; future time clauses; basic negatives.
Unless introduces an exception
In many ordinary conditions, unless is close to if not. It states an exception to the main plan or claim. Keep the meaning clear rather than adding a second negative automatically.
We’ll meet outside unless it rains.
I won’t change the date unless you ask me to.
An exception to a refusal is not a guaranteed result
Asking is necessary before a change will be considered in this statement.
The speaker says the date will not change.
The stated barrier is removed, but the sentence alone does not promise that the date will change.
As long as sets a condition
As long as can mean on condition that, not only for a duration. A permission or plan depends on the stated requirement. Context distinguishes the conditional meaning from a length-of-time meaning.
You can borrow it as long as you return it tonight.
I’ll help as long as we finish before six.
Provided that is a more formal condition
Provided that or providing that introduces a stipulated condition. In ordinary future conditions, the condition clause normally uses a present form. Do not reverse a condition when paraphrasing.
We can use the room provided that we leave it tidy.
The trip will go ahead provided that enough people book.
Guided practice
Say or write your answer first. Compare the meaning and form; the model is one possible answer.
1. Rewrite with unless: We’ll walk if it doesn’t rain.
Compare a model and explanation
We’ll walk unless it rains.
Unless introduces the raining exception.
2. Rewrite with if: I won’t send it unless you approve it.
Compare a model and explanation
I won’t send it if you don’t approve it.
The lack of approval prevents sending.
3. Complete: You can use it as long as you ___ it back. Use bring.
Compare a model and explanation
bring
Use a present form in this ordinary future condition.
4. Complete: The event will run provided that enough people ___. Use register.
Compare a model and explanation
register
Registration is the stated condition.
5. Explain the two meanings of as long as in Stay as long as you need and You can stay as long as you help.
Compare a model and explanation
The first concerns duration; the second makes helping a condition of staying.
Context determines the meaning.
6. Correct the intended exception: We’ll go unless it doesn’t rain. Intended meaning: rain is the reason not to go.
Compare a model and explanation
We’ll go unless it rains.
The added negative reverses the intended exception.
7. Explain the condition in You can borrow it provided that you return it by Monday.
Compare a model and explanation
Permission depends on returning it by Monday.
The sentence does not give unconditional permission.
8. Why should unless not replace every if not mechanically?
Compare a model and explanation
Some negative conditions have different logical or counterfactual relationships, so the paraphrase must be checked for meaning.
This lesson models ordinary exceptions, not a universal word swap.
A short conversation
Listen first if you can, then open the transcript when useful.
Open the conversation transcript
A: Can we borrow the studio for the rehearsal?
B: Yes, as long as you finish by eight and leave it tidy.
A: Will someone be there to open it?
B: I’ll open it unless the earlier group is still using it. Provided that they’re finished, we can start on time.
Listening checks
Listen to each extract or open its transcript. These three questions have their own score.
Mastery quiz
Choose the best answer in each situation. Your score is out of eight.
Use it in your own words
Speaking task 1
Negotiate borrowing a fictional camera. Use as long as for permission, provided that for a formal condition and unless for an exception.
Reveal a possible response
You can borrow it as long as you return it tonight. You may take it outdoors provided that you keep it dry. I won’t need it before six unless my own camera stops working.
Success check: Keep the condition, permission and exception distinct.
Speaking task 2
Plan an event with a minimum group size and a weather alternative.
Reveal a possible response
The workshop will go ahead provided that six people register. We’ll use the garden unless it rains. We can move indoors as long as the small room is free.
Success check: Preserve the direction of each requirement and avoid an accidental extra negative.
Speaking task 3
Compare two paraphrases of a condition and explain whether they preserve the same plan.
Reveal a possible response
We’ll start unless anyone objects is close to saying we’ll start if nobody objects. Saying we’ll start if anyone objects changes the condition and therefore the plan.
Success check: Test the meaning with a concrete case rather than swapping words mechanically.
Take it with you
I can express exceptions and conditions without changing what is required for a plan or permission.