III. Use UNLESS instead of IF :
1. If she doesn’t hurry, she’ll be late. ………………………………………………………………
2. If you don’t like this one, I will bring you another. ………………………………………………
3. If you are not careful, you will cut yourself with that knife.
………………………………………………………………………………………………
4. I’ll be able to do any work if I do now have a quiet room.
……………………………………………………………………………………………
IV. Combine each pairs of these sentences, using IF :
Type 1 :
1. Recycle and we’ll save natural resources. ………………………………………………………..
2. Be careful or you will fall over the rocks. ………………………………………………………..
3. Working too much can make you feel tired. ………………………………………………………
4. Don’t be careless or you’ll break the vase. ……………………………………………………….
5. Ha can pass the exam, she has to work hard.………………………………………………………
6. He can do a part to save the environment by buying recycled products.
………………………………………………………………………………………………
7. Putting garbage into the bins is one answer to minimize pollution.
……………………………………………………………………………………………
8. We should take the map with us or we will lose our way on the street.
………………………………………………………………………………………………
9. Ellen can borrow it, but she must give it back next week.
………………………………………………………………………………………………
10. The authorities are thinking of raising the petrol prices. I will have to cycle to work.
………………………………………………………………………………………
III. Use UNLESS instead of IF :
1. Unless she hurries, she’ll be late.
2. Unless you like this one, I will bring you another. ………………………………………………
3. Unless you are careful, you will cut yourself with that knife.
4. I’ll be able to do any work unless I don't now have a quiet room.
IV. Combine each pairs of these sentences, using IF :
Type 1 :
1. If we recycle, we’ll save natural resources. ………………………………………………………..
2. If you aren't careful careful or you will fall over the rocks. ………………………………………………………..
3. If you work too much, you will feel tired. ………………………………………………………
4. If you are careless, you’ll break the vase. ……………………………………………………….
5. Ha can pass the exam if she works hard.………………………………………………………
6. He can do a part to save the environment if he buys recycled products.
7. if we put garbage into the bins, we will minimize pollution.
8. If We don't take the map with us, we will lose our way on the street.
9. Ellen can borrow it if she gives it back next week.
10.If The authorities are thinking of raising the petrol prices,I will have to cycle to work.