A proverb says:"..." 有句谚语说：“...”
As the proverb says:"..." 如谚语说：“...”
Everybody knows that... 每个人都知道...
Generally speaking... 一般说来...
It can be easily proved that... 很容易证明...
It goes without saying that... 不用说...
It is quite clear that...because... 很明显...,因为...
It is often said that... 人们常说...
Many people often ask this question:"...?" 许多人常问这个问题：“...?”
It is ture that... ...是真实的
No one can deny that... 谁也不能否认...
One thing which is equally important to the above mentioned is... 与上述同样重要的一件事是...
The chief reason why... 为什么...的主要原因是...
We must recognize that... 我们必须承认...
There is no doubt that... 无疑...
I'm of the opinion that... 我认为...
In my point of view... 在我看来...
This can be expressed as follows... 这可以从以下几点说明...
The reasons are presented below... 原因例举如下...
To take... for an example... 以...为例...
Therefore we should realize that... 因此我们应该了解...
We have reasons to believe that... 我们有理由相信...
Now that we know that... 既然我们知道...
What is more serious is that... 更严重的是...
Anyway,I agree with the idea of... 不管怎样，我同意...
I side with the latter opinion... 我同意后一个观点...
