一.开头句型

　　1.as far as ...is concerned

　　2.it goes without saying that...

　　3.it can be said with certainty that...

　　4.as the proverb says，

　　5.it has to be noticed that...

　　6.it's generally recognized that...

　　7.it's likely that ...

　　8.it's hardly that...

　　9.it's hardly too much to say that...

　　10.what calls for special attention is that...需要特别注意的是

　　11.there's no denying the fact that...毫无疑问，无可否认

　　12.nothing is more important than the fact that...

　　13.what's far more important is that...

　　二.衔接句型

　　a case in point is ...

　　as is often the case...

　　as stated in the previous paragraph 如前段所述

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