- If you can’t swim, you’re not allowed in the deep end.
You’re not allowed in the deep end unless you can swim.
- If I finish my homework, I can go out at the weekend.
I can’t go out at the weekend unless I finish my homework.
- World population will continue to rise if we do not try to reduce it.
Unless we try to reduce the world population, it will continue to rise.
- Unless we leave now, we’ll miss our ride home
If we don’t leave now, we’ll miss our ride home.
- Unless there is water, this tree won’t grow.
If there is no water/ there isn’t any water, this tree won’t grow.
- If you don’t rest, you will be ill.
Unless you rest, you will be ill.
- Unless you keep your feet dry, you will catch a cold.
If you don’t keep you feet dry, you will catch a cold.
- If she is late, we won’t be able to take that flight.
Unless she is early, we won’t be able to take that flight.
- She will go with him if he promises to keep secret.
She won’t go with him unless he promises to keep secret.
- If they don’t study hard, they will fail the exam.
Unless they study hard, they will fail the exam.