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,

　　21.In contrast,

　　22.By contrast,

　　23.On the contrary,

　　24.Whether …depends on whether…

　　25.It is wrong to assume that

　　26.When it comes to something,

　　27.… for the reason that

　　28.… for the simple reason that

　　29.For one thing,

　　30.For another,

　　31.There is an element of truth in both views.

　　32.Both views make sense.

　　33.Some people fail to take into account the fact that

　　34.In view of the seriousness of this problem,

　　35.It is indisputable that

　　36.To make matters worse,

　　37.To make things worse,

　　38.On a substantial level,

　　39.Nothing is more significant than to do something.

　　40.Nothing is more critical than doing something.