
A. Unless often used in warnings:
Examples:
1. We'll be late unless we hurry. (= Unless you hurry)
2. Unless you work harder, you're not going to pass the examination.
(= If you become a better deal)
3. The man said he would hit me unless I told him where the money was.
(= If only I did not tell him)
Instead, unless you can tell if ... not:
Examples:
1. Don't tell Ann what I said if she doesn't ask you.
2. We'll be late if we don't hurry.
B. As long as / provided or providing (that) These expressions mean but only if (in case):
Examples:
1. You can use my car as long as you drive carefully.
(= In that case, if you drive carefully)
2. Travelling by car is convenient provided (that) you have somewhere to.
park (= In that case, if there is room for parking)
3. Providing (that) she studies hard, she should pass the examination.
(= Only for intensive tuition)
C. When talking about the future, do not use will with unless, as long as, provided, or
providing phrases. Use the form below:
Examples:
1. We'll be late unless we hurry. (Rather than `unless we will hurry ')
2. Providing she studies hard ... (Instead of `providing she will study ')
Exercise A: Change each sentence using
UNLESS make sure it makes sense.
Example: You must study hard or you won`t pass the exam.
Answer: You won`t pass the exam unless you study.
1. You must listen carefully or you won`t know what to do.
You won`t know what to do __________________________.
2. We must hurry or we'll miss the bus.
We'll __________________________.
3. You must speak very slowly or she won't be able to understand you.
She __________________________.
4. My salary must be increased or I'll look for another job.
I'll __________________________.
Exercise B: Choose the correct word for each sentence.
1. I'm playing basketball tomorrow unless / providing it's raining.
2. We're going to start painting the wall tomorrow unless / provided it's not
raining.
3. You can smoke in here unless / as long as you leave a window open to let the
smoke out.
4. The children can stay here unless / providing
they dont make too much noise.
5. I am going now unless / provided you want me to stay.
6. Mary doesn't trust anyone. She won't lend you any money unless / as long as
you promise to pay her back.