1. If the assumptions are incorrect or inadequate, the model might yield incorrect or inadequate predictions.

2. If incomes are rising, the demand for most goods and services will tend to increase.

3. If money incomes rise by 5 per cent, but over the same period prices rise by 10 per cent, real income will have fallen.

4. If the price of butter fell, the demand for margarine would probably fall.

5. If the supplier of such a commodity were to raise the price, many buyers would turn to the close substitutes.

6. If production can be expanded very easily and quickly in response to an increase in demand, supply will be elastic.

7. If demand were inelastic, the movement of the supply curve would lead to a relatively large fall in price and a relatively small increase in the quantity demanded.

8. Provided the Earth's mass were twice as great as it is, it would attract any body twice as strongly.

9. Were I in the city, I would attend his lecture.

10. Had he pointed out all the drawbacks, we should have found ways to solve the problem.

11. Had the agent defaulted on the agreement, we would have taken legal action.

12. If our supplier continues to miss deadlines, we must look for alternatives.

13. We might beat the price increases, if we made the investment now.

14. If the consultant had done more careful research, he would have identified the gap in the market.

15. We would be very grateful if you would send us the information as soon as possible.

16. If the market for our products expands, we will have a 20 per cent increase in turnover next year.

17. If the radicals haven't made the government more responsible, they have wasted their time.

18. If I had known that I wouldn't have said anything.

19. Had I known that I wouldn't have said anything.

20. Should the guests come earlier, no one will be here to greet them.

 21. If we increase production volume, we will benefit from a more economic batch size.

22. They can ensure the quantity of the product if they train the supervisors.

23. We would have to reduce our workforce if the bank refused to extend our credit.

24. If the government hadn't introduced the tax incentive scheme, we would have faced serious financial difficulties.

25. If a government cuts taxation, it gains a lot of popular support.

26. Provided we don't increase expenditure, we will definitely reach break-even point within six months.

27. If wages rise, unemployment will increase.

28. If we don't install new equipment, we will become uncompetitive.

29. If we installed new equipment, we would become more competitive.

30. If we had installed the equipment, we would have become more competitive.

31. In case we don't reach the break-even point within six months, we will have to ask for another bank loan.

32. Unless we reach break-even point within six months, we will have to ask for another bank loan.

33. Should the agent default on the agreement, we will take legal action.

34. Were the agent to default on the agreement, we would take legal action.

35. If I had known that you needed help I would helped you.

44). Раскройте скобки, используя глаголы в скобках, и образуйте III тип или смешанный тип условных предложений.

1. If you _____________ (come) to the theater yesterday, you _________ (enjoy) the play.

2. If I _____________ (visit) Athens last year, I _____________ (phone) you.

3. If only I _________ (know) you already had tickets, I __________ (not get) any got you.

4. If you _____________ (start) coming to the course earlier, you ___________ (could pass) the exam.

5. If I ______________ (not be) so shy at the party last Saturday, I _____________ (might make) more friends.

6. If you ____________ (not spend) so much money, I ____________ (not be) angry now.

7. She __________ (get) promoted last year if she ___________ (not argue) with the boss.

8. If I ______________ (meet) you before, my life ________________ (be) different.

9. If he _____________(not see) the other car, there ____________ (be) a serious accident.

10.  He ______________ (not get) the job, if he _______________ (not wear) a tie.

11. If you ______________ (invite) me, I _______________ (be) at the party now.

12. If I ______________ (lose) my job, I _______________ (find) life very difficult.