It goes without saying that 子句
(It is)needless to say (that)子句
It is obvious that子句
Obviously，S. + V.
It goes without saying that it pays to keep early hours.
There is no Ving
There is no way of Ving.
There is no possibility of Ving.
It is impossible to V.
It is out of the question to V.
No one can V.
We cannot V.
There is not denying that successful business lies in a healthy body and mind.
I am greatly convinced (that)子句
I am greatly assured (that)子句
I am greatly convinced that prevention is better than cure.
Among various kinds of …，…
Of all the …，…
Among various kinds of sports，I like jogging in particular.
It can be easily proved (that)子句
It can be easily proved that nothing is more precious than time.
… cannot be overemphasized
The importance of traffic safety cannot be overemphasized.
In my opinion，…
To my mind，…
As far as I am concerned，…
I am of the opinion that 子句
In my opinion,playing video games not only takes much time but is also harmful to health.
Everyone knows (that)子句
As far as my knowledge is concerned，…
As far as my knowledge is concerned,the following ways are of great help to me.
There is no doubt (that)子句
There is no doubt that near-sightedness is a serious problem among the youth of our country.
According to my personal experience，…
Based on my personal experience，…
According to my personal experience，smile has done me a lot of good.