表示重要性或必要性
　　1.It’s important to set aside time for relaxation,hobbies,and entertainment as well.
　　2.Improved consumer confidence is extremely important to an economic recovery
　　3.What is important in both stories that honesty was seen as an important part of the American character.
　　4.The ability to observe keenly and in detail is necessary for anyone who wishes to become a scientist.
　　5.To find a solution to a conflict, it is often necessary to make some kind of compromise
　　6.A harmonious atmosphere is essential(necessary /critical/indispensable)to successful reform
　　7.It is essential that the increase in production should be geared to the increase in public demand.
　　8.We should make a careful study of the problem and try to find out a solution to it.