表示原因 1)There are three reasons for this. 2)The reasons for this are as follows. 3)The reason for this is obvious. 4)The reason for this is not far to seek. 5)The reason for this is that... 6)We have good reason to believe that... 例如: There are three reasons for the changes thathave taken place in our life.Firstly,people’s living standard has been greatlyimproved.Secondly,most people are well paid,and they can afford what they need or like.Lastbut not least,moreand more people prefer to enjoy modern life. 注:如考生写第一个句子没有把握,可将其改写成两个句子。如:Great changes have taken place in our life. There are three reasons forthis.这样写可以避免套用中的表达失误。新四六级备考专题:包含报考信息、四六级新题型介绍、四级满分牛人经验谈等 2.表示好处 1)It has the following advantages. 2)It does us a lot of good. 3)It benefits us quite a lot. 4)It is beneficial to us. 5)It is of great benefit to us. 例如: Books are like friends.They ca n help us knowthe world better,andthey can open our minds and widen our horizons.Therefore,reading extensively is of great benefit to us. 3.表示坏处 1)It has more disadvantages than advantages. 2)It does us much harm. 3)It is harmfulto us. 例如: However,everything dividesinto two.Television can alsobe harmful to us.It can do harm to our health and make us lazy if we spend toomuch time watching televi- sion. 4.表示重要、必要、困难、方便、可能 1)It is important(necessary,difficult,convenient, possible)for 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 computersare playing an increasingly important role in our life and we have stepped intothe Computer Age. 5.表示措施 1)We should take some effective measures. 2)We should try our best to overcome(con quer)the difficulties. 3)We should do our utmost in doing sth. 4)We should solve the problems that we are confronted(faced)with. 例如:The housing problem that we are confronted withis becoming more and more serious.Therefore,we must take some effective measures to solveit. 6.表示变化 1)Some changes have taken place in the past five years. 2)A great change will certainly be produced in the world’s communications. 3)The computer has brought about many changes in education. 例如: Some changes have taken place in people’s dietin the past five years.The major reasons for these changes are not far toseek.Nowadays,moreand more people are switching from grain to meat for protein,and from fruit and vegetable to milk forvitamins