句型：
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 recongnized that...
7.It`s likely that
8.It`s hardly that...
It`s hardly too much to say that...
What calls for special attention is that...需要特别注意的是
There`s no denying the fact that...毫无疑问，无可否认
Nothing is more important than the fact that...
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
But the problem is not so simple. Therefore然而问题并非如此简单，所以……
But it`s a pity that...
For all that...In spite of the fact that...
Further, we hold opinion that...
However , the difflcult lies in...
Similarly, we should pay attention to...
not(that)...but(that)...不是，而是
In view of the present sitation.鉴于目前形势
As has been mentioned above...
In this respect,we many as well (say)从这个角度上我们可以说
However, we have to look at the other side of the coin, that is...然而我们还得看到事物的另一方面，即

三，结尾句型

I will conclude by saying...
Therefore, we have the reason to belive that...
All things considered,总而言之
It may be safely said that...
Therefore, in my opinion, it`s more advisable...
It can be concluded from the discussion that...从中我们可以得出这样的结论
From my point of view, it would be better if...在我看来……也许更好

四。万能句型
Let`s take...to illustrate this.试举例以兹证明
eg:let`s take the above chart as an example to illustrate this.
It`s remains to be further studied...
There`s question is how...
so that,so...that...