Nowadays, there are more and more [某种现象] in [某种场合].
It is estimated that [相关数据]. Why have there been so many [某种现象]?
Maybe the reasons can be listed as follows. The first one is [原因一].
Besides, [原因二]. The third one is [原因三]. To sum up, the main cause of......
here is a widespread concern over the issue that __作文题目_____. But it is well known that the opinion concerning this hot topic varies from person to person. A majority of people think that _ 观点一________. In their views there are 2 factors contributing to this attitude as follows: in the first place, ___原因一_______.Furthermore, in the second place, ___原因二_____. So it goes without saying that ___观点一_____.
People, however, differ in their opinions on this matter. Some people hold the idea that ___观点二_______. In their point of view, on the one hand， ___原因一_______. On the other hand, ____原因二_____. Therefore, there is no doubt that ___观点二______.
As far as I am concerned, I firmly support the view that __观点一或二______. It is not only because ________, but also because _________. The more _______, the more ________.
I am writing this letter to call on_________.As some of you may know,________.In face,________.
It is necessary for us to________.On the one hand,__________.On the other hand,_________.Hesce, it is high time________.Firstly, we should_____________.Secondly,___________.
Please contact us via_________.Please join us in the effort to __________.
Thank you for your paiticipation
When taking about whether _____________,we will be most surprised tofnd that the present situation is utterly complicated,For one thing,__________.For another,_________.
Three factors,in my point of view,account for this phenomenon.Firstand foremost,________.Secondly,____________.Last but not least,____________.
As far as I am concerned,I firmly believe that____________,only when_____________.