1.The advantage far outweigh the disadvantages.2.The advantages of A are much greater than those of B.3.A may be preferable to B, but A suffers from the disadvantages that...4.It is reasonable to maintain that ...but it would be foolish to claim that...5.For all the disadvantages, it has its6.Like anything else, it has its faults.8.A bears some resemblances to B.9.However, the same is not applicable to B.10. A and B differ in several ways.11. Evidently, it has both negative and positive effects.12. People used to think ..., but things are different now.13. The same is true of B.14. Wondering as A is ,it has its drawbacks.15. It is true that A ... , but the chief faults(obvious defects )are ...二)原因1.A number of factors are accountable for this situation.A number of factors might contribute to (lead to )(account for ) the phenomenon(problem).2. The answer to this problem involves many factors.3. The phenomenon mainly stems from the fact that...4. The factors that contribute to this situation include...5. The change in rgely results from the fact that...6. We may blame ...,but the real causes are...7. Part of the explanations for it is that ...that ...Another contributing factor (cause ) is ... Perhaps the primary factor is that…But the fundamental cause is that ...三)后果1. It may give rise to a host of problems.2. The immediate result it produces is ...3. It will exercise a profound influence upon...4. Its consequence can be so great that...四)批驳1)It is true that ..., but one vital point is beingleft out.2) There is a grain of truth in these statements,but they ignore a more important fact.3) Some people say ..., but it does not holdwater.4) Many of us have been under the illusionthat...5) A close examination would reveal howridiculous the statement is.6) It makes no sense to argue for ...7) Too much stress placed on ... may leadto ...8) Such a statement mainly rests on theassumption that ...9) Contrary to what is widely accepted, Imaintain that ...五)举例1) A good case in point is ...2) As an illustration, we may take ...3) Such examples might be giveneasily.4) ...is often cited as an example.六)证明1) No one can deny the fact that ...2) The idea is hardly supported by facts.3) Unfortunately, none of the available datashows ...4) Recent studies indicate that ...5) There is sufficient evidence to show that ...6) According to statistics proved by ..., it canbe seen that ...七)开篇1) Many nations have been faced with theproblem of ...2) Recently the problem has been brought intofocus.4) Recently the issue has aroused greatconcern among ...5) Nowadays there is a growing concern over ...6) Never in our history has the idea that ...been so popular.7) Faced with ..., quite a few people arguethat ...8) According to a recent survey, ...9) With the rapid development of ..., ...八)结尾1) From what has been discussed above, wecan draw the conclusion that ...2) It is high time that strict measures weretaken to stop ...3) It is necessary that steps should be takento ...4) In conclusion, it is imperative that ...5) There is no easy method, but ...might be ofsome help.6) To solve the above-mentioned problem, wemust ...7) In summary, if we continue to ignore theabove-mentioned issue, more problems will cropup.8) With the efforts of all parts concerned, theproblem will be solved thoroughly.9) We might do more than identify the cause ;it is important to take actions to ...10) Taking all these into account, we ...11) Whether it is good or not /positive or negative,one thing is certain/clear...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）Thereason for this is that．．．6）We have good reason to believe that．．．例如：There are three reasonsfor the changes that have taken place in our life．Firstly，people’s living standard has beengreatly improved．Secondly，most people are well paid，and they can afford what they need orlike．Last but not least，more and more peopleprefer 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：Greatchanges have taken place in our life．There are three reasons for this．这样写可以避免套用中的表达失误。

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 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．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 also be harmful to us．It can do harm to our health and make us lazy if we spend too much 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：5．表示措施3）We should do our utmost in doing sth．4）We should solve the problems that we are confronted（faced）with．例如：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 thein education．例如：Some changes have takenplace in people’s diet in the past five years．Themajor reasons for these changes are not far toseek．Nowadays，more and more people areswitching from grain to meat for protein，and fromfruit and vegetable to milk for vitamins．7．表示事实、现状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 cannotignore the fact that industrialization brings with itthe 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．8．表示比较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，theycontribute to people’s health by giving them duephysical exercise．9．表示数量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 byWith the improvement of the living standard，thedecreased while that spent on education hasincreased．再如：From the graph listed above，“Fromthe graph listed above，it can be seen that”见句式12。