There is no denying the fact that (why/how/what) ____________ is a hot topic which is much talked about [not only by ____________, but also by ____________ /by people across the world/ in a modern society].
或：There is no denying the fact that (why/how/what) ____________ is a popular topic which has caused heated debate over a long period of time (because it affects everybody in his or her daily lives).
或：There is no denying the fact that (why/how/what) ____________ is a basic (moral/philosophical) problem that can not be circumvented by anybody,( because the opinion on this problem will determine one’s attitude toward the world and the life).
或：(如果是针对某一事件的题目，不是什么popular topic)____________(Why people visit museums) is a interesting question that deserves careful investigation not only by_______________(museum managers), but also by ____________(visitors themselves). People with different experience, life style and differ greatly in their attitudes toward this [problem /question]. Some people hold the opinion that ____________. Others, [however/on the contrary], maintain that ____________. Still others, convinced by the view that ____________, argue that ____________. According to them,____________. But as far as I am concerned, I consider the [chief reason/ most important quality] is ____________. And here are three reasons that I’d like to point out.
In a word, ____________(the three points mentioned above) are the main opinions on ____________ hold by [com#mon/most] people. But my idea is that ____________________, and I sincerely believe that it is right.
Somewhat surprisingly, people with different experience, life style and share similar attitudes toward this [problem/question]. They usually [give some, even all of the following reasons / consider some, even all of the following points [important/ necessary / desirable /advisable] ].
第三段：In a word, ____________(the three points mentioned above) are the main [reasons /desirable qualities /____________] of ____________. But as far as I am concerned, I consider the [ chief reason/ most important quality] is ____________.
或：In a word, ____________(the three points mentioned above) are the main opinions on ____________ hold by [com#mon/most] people. But in my point of view, ____________ has more advantages than disadvantages under most circumstances.
This may explain why ____________/As a consequence____________
It goes without saying that____________
In fact, we can observe easily that in modern society,____________
As a proverb says, "Everything has two sides".
As a proverb says, "Where there is a will there is a way".
As is known to all, "No pains, no gains."
Let’s bring our discussion here to a more present and practical context. In today’s world,____________
I can say that if you have no experiences like these, your life is an inadequate one.
be of great benefit/damage to sb./sth.
The reason of ____________ is not so much ____________ as ____________
People differ greatly in their attitudes towards this problem. Some people hold the opinion that ____________ Others, [ however/on the contrary], maintain that ____________.
It is [urgent/necessary/convenient/desirable/advisable] for sb. to do sth.
have [trouble/a difficult time] [in doing sth./with sth.]
举例证：It can be given by a (well known/concrete) example that ____________. / In order to see this point clearly, let us to see an example:____________/To illustrate this, there is an example that is very persuasive:____________.
The main/first reason is that ____________.
First, we can observe easily that in modern society, ...
In the first place
To begin with, (a good roommate should ____________)
Besides, the further reason why I advocate AAA is that ____________.
[The second/another] reason for [my/people’s] propensity for A is that ____________
[The second/another] desirable quality for a good roommate is that ____________
The third reason, [not the last/however], goes this way: ____________
写完三条原因还可以再写：Maybe there are some other reasons( to show____________). But
it is generally believed that the reasons mentioned above are com#monly acceptable.
Nevertheless I must admit that people can do well without AAA, but no one can ignore the additional convenience and satisfaction offered by AAA. Such experience will definitely be helpful in one’s later life.
陈述这个事实 As is know by all， ……
Among countless factors which contribute to XXX， there exist three most conspicuous ones：One of the primary causes is that…
XXX also results from…
… is responsible for xxx， as well.
To put all into a nutshell， I draw the conclusion that A，B and C are three main contributors to XXX
2. What should we do? How do something influence our lives? what are the characters of something.
There are numerous approaches to solving…/impacts on sth. /characteristics of… ， and I would explore the most conspicuous ones there. One of the primary method， to my mind， is that…
one of the primary impact， to my mind， is that…
one of the primary characteristic， to my mind， is that…
a more subtle point which we must consider is that…
In addition/ furthermore ……
In conclusion， Taking into account of all these methods/ affects / aspects， we may reach the conclusion that……