(六)证明
1.No one can deny the fact that …
2.The idea is hardly supported by facts.
3.Unfortunately, none of the available data shows …
4.Recent studies indicate that …
5.There is sufficient evidence to show that …
6.According to statistics proved by …, it can be seen that …
(七)开篇
1.Many nations have been faced with the problem of …
2.Recently the problem has been brought into focus.
3.Recently the phenomenon has become a heated topic.
4.Recently the issue has aroused great concern among …
5.Nowadays there is a growing concern over …
6.Never in our history has the idea that …been so popular.
7.Faced with …, quite a few people argue that …
8.According to a recent survey, …
9.With the rapid development of …, …
(八)结尾
1.From what has been discussed above, we can draw the conclusion that …
2.It is high time that strict measures were taken to stop …
3.It is necessary that steps should be taken to …
4.In conclusion, it is imperative that …
5.There is no easy method, but …might be of some help.
6.To solve the above-mentioned problem, we must …
7.In summary, if we continue to ignore the above-mentioned issue, more problems will crop up.
8.With the efforts of all parts concerned, the problem will be solved thoroughly.
9.We might do more than identify the cause ; it is important to take actions to …
10.Taking all these into account, we …
11.Whether it is good or not /positive or negative, one thing is certain/clear…