1)There are three reasons for this.
2)The reasons for this are as follows.
3)We have good reason to believe that...
4) There are several causes for this significant growth
in...， firstly .... secondly...， last but not least (finally)...
5) There are many (different/several) reasons for this change (decrease/growth) of... For one thing，...For another，.... ，In addition，...
6). The chief reason why...is that...
1)It has the following advantages.
2)It benefits us quite a lot.
3)It is of great benefit to us.
例如：Books are like friends.They can help us know the world better，and they can open our minds and widen our horizons.Therefore，reading extensively is of great benefit to us.
1)It has more disadvantages than advantages.
例如：However，everything divides into two.Television can also be harmful to us.It can do harm to our health and make us lazy if we spend too much time watching television.
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 computers are playing an increasingly important role in our life and we have stepped into the Computer Age.
1)We should take some effective measures.
2)We should try our best to overcome(conquer)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 with is becoming more and more serious.Therefore，we must take some effective measures to solve it.
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 diet in the past five years.The major reasons for these changes are not far to seek.Nowadays，more and more people are switching from grain to meat for protein，and from fruit and vegetable to milk for vitamins.
1)We cannot ignore the fact that...
2)No one can deny the fact that...
3)There is no denying the fact that...
4)This is a phenomenon that many people are interested in.
5)However，that’s not the case.
例如：We cannot ignore the fact that industrialization brings with it the problems of pollution.To solve these problems， we can start by educating the public about the hazards of pollution.The government on its part should also design stricter laws to promote a cleaner environment.
1)Compared with A，B...
2)I prefer to read rather than watch TV.
3)There is a striking contrast between them.
例如：Compared with cars，bicycles have several advantages besides being
affordable.Firstly，they do not consume natural resources of petroleum.Secondly，they do not cause the pollution problem.Last but not least，they contribute to people’s health by giving them due physical exercise.
1)It has increased(decreased)from...to...
2)The population in this city has now increased (decreased)to 800，000.
3)The output of July in this factory increased by 15% compared with that of January.
4). It has increased by three times as compared with that of 1998
5). There is an increase of 20% in total this year.
6). It would be expected to increase 5 times.
7). The table shows a three times increase over that of last year.
8). It was decreased twice than that of the year 1996.
9). The total number was lowered by 10%.
10). Compared with 1997， it fell from 15 to 10 percent.
11). The number is 5 times as much as that of 1995.
例如：With the improvement of the living standard，the proportion of people’s income spent on food has decreased while that spent on education has increased. 再如：From the graph listed above，it can be seen that student use of computers has increased from an average of less than two hours per week in 1990 to 20 hours in 2000。
1)People have(take，adopt，assume)different attitudes towards sth.
2)People have different opinions on this problem.
3)People take different views of(on)the question.
4)Some people believe that...Others argue that...
5). In my opinion， this point of view doesn’t hold water.
6). We have no reason to believe that...
7). Others may find this to be true， but I believe that...
8). Perhaps I will question why...
9). There is a certain amount of truth in this， but we still have a problem with regard to...
10). It would be reasonable to take the view that...， but it would be foolish to claim that...
11). There is in fact no reason for us to believe that...
12). What these people fail to consider is that...
13). Wonderful as A is， however， it has its own disadvantages too句子2
Along with the advance of the society more and more problems are brought to our attention， one of which is that.。。。
随着社会的不断发展，出现了越来越多的问题，其中之一便是____________。 As to whether it is a blessing or a curse， however， people take different attitudes.
然而，对于此类问题，人们持不同的看法。(Hold different attitudes 持不同的看;Come up with different attitudes 有不同的看法)
As society develops， people are attaching much importance to.。。。
People are attaching more and more importance to the interview during job hunting 求职的过程中，人们慢慢意识到面试的`重要性。