Write a new sentence with a similar meaning to the first sentence, using unless. The plants won't grow unless you water them...
2. The machine won't start if you don't plug it in.
3. The union will call a strike if staff are not given a pay rise.
4. If the government fails to act, there will be a water shortage.
5. The programme is likely to go ahead if there isn't a last-minute hitch.
6. If there is not an examination at the end of the course, some students will not study seriously.
7. If they don't enjoy what they are doing, people tend not to succeed.
8. Without a valid library card, students cannot use the library.
9. If no measures are taken, the situation will get worse.
10. If the patient's condition doesn't deteriorate, she should make a full recovery.
4. Write an If... sentence with the same meaning as the first sentence. Sometimes there is more than one possible answer.
2. Without water, life on Earth would be impossible,
3. Everyone speaks different languages, so people don't get on well together.
4. We haven't got a computer so it isn't as easy to do the calculations.
5. Food isn't distributed fairly so some people don't have enough to eat.
6. People don't give up smoking because they probably don't know the risks involved.
7. Aliens might land on Earth unnoticed
8. The library doesn't open on Sunday so we can't go there to study
9. Greater use of public transport would cut the amount of pollution from cars.
10. People who are overweight eat too much and don't take enough exercise.
