三、用于解释性和阐述性论说文

　　1.Everybody knows that…

　　2.It can be easily proved that…

　　3. It is true that…

　　4. No one can deny that

　　5. One thing which is equally important to the above mentioned is…

　　6. the chief reason is that…

　　7. We must recognize that…

　　8. there is on doubt that…

　　9. I am of the opinion that…

　　10. This can be expressed as follows

　　11. To take …for an example…

　　12. We have reason to believe that

　　13. Now that we know that…

　　14. Among the most convincing reasons given, one should be mentioned…

　　15. the change in …largely results from the fact that

　　16. there are several causes for this significant growth in…,first …,second …,finally…

　　17. A number of factors could account for the development in…

　　18. Perhaps the primary reason is…

　　19. It is chiefly responsible of…

　　20. the reasons for…are complicated, And probably they are found in the fact…

　　21. Here are several possible reasons, excerpt that…

　　22. Somebody believes/argues/holds/insists/thinks that…

　　23. It is not simple to give the reason for this complicated phenomenon…

　　24. Different people observes it in different ways.

　　四、用于文章的开头

　　1. As the proverb says…

　　2. It goes without saying tan

　　3. Generally speaking…

　　4. It is quite clear than because…

　　5. It is often said that …

　　6. Many people often ask such question:“…?”

　　7. More and more people have come to realize…

　　8. there is no doubt that…

　　9. Some people believe that…

　　10. these days we are often told that, but is this really the case?

　　11. One GREat man said that…

　　12. Recently the issue of… has been brought to public attention.

　　13. In the past several years there has been…

　　14. Now it is commonly held that… but I doubt whether…

　　15. Currently there is a widespread concern that

　　16. Now people in growing number are coming to realize that…

　　17. there is a general discussion today about the issue of …

　　18. Faced with…, quite a few people argue that…, but other people conceive differently.