1.It is reported that

　　2.It is estimated that

　　3.It must be stressed out that

　　4.Nothing has received more praise and abuse than something.

　　5.Something leave much to be desired.

　　6.A is to B what C is to D.

　　7.Never has something failed to fascinate us in modern society

　　8.It is no overstatement to say that

　　9.It is no exaggeration to say that

　　10.Something is a good case in point.

　　11.The ever-accelerated updating of something has brought about both chances and challenges.

　　12.It is \was + 被强调部份 + that \ who + 原句剩余部份.

　　13.Something is indispensable to somebody in this updating society.

　　14.On the one hand,

　　15.On the other hand,

　　16.An argument occasionally these days is whether

　　17.For example,

　　18.For instance,

　　19.To illustrate,

　　20.As an illustration,