【简介】感谢网友“雕龙文库”参与投稿，这里小编给大家分享一些，方便大家学习。
4.表示重要、必要、困难、方便、可能
1)It is importantfor sb.to do sth.
2)We think it necessary to do sth.
3)It plays an important role in our life.
例如：
Computers are now being used everywhere，whether in the government，in schools or in business.Soon， computers will be found in every home，too.We have good reason to say that computers are playing an increasingly important role in our life and we have stepped into the Computer Age.
