1.There are several reasons for…, but in general, they come down to three major ones.有几个原因……，但一般，他们可以归结为三个主要的。2.Many ways can contribute to solving this problem, but the following ones may be most effective.有很多方法可以解决这个问题，但下面的可能是比较有效的。( 可以用在保护环境等话题的作文)

1.As far as ...is concerned就……而言

2.It goes without saying that...不言而喻，...

3.It can be said with certainty that...可以肯定地说......

4.As the proverb says，正如谚语所说的，

5.It has to be noticed that...它必须注意到，...

6.It's generally recognized that...它普遍认为...

7.It's likely that ...这可能是因为...

8.It's hardly that...这是很难的......

9.It's hardly too much to say that...它几乎没有太多的说...

10.What calls for special attention is that...需要特别注意的是

11.There's no denying the fact that...毫无疑问，无可否认

12.Nothing is more important than the fact that...没有什么比这更重要的是…

13.what's far more important is that...更重要的是…

1.I will conclude by saying...比较后我要说…

2.Therefore, we have the reason to believe that...因此，我们有理由相信…

3.All things considered,总而言之 It may be safely said that...它可以有把握地说......

4.Therefore, in my opinion, it's more advisable...因此，在我看来，更可取的是…

5.From what has been discussed above, we may safely draw the conclusion that….通过以上讨论，我们可以得出结论…

6.The data/statistics/figures lead us to the conclusion that….通过数据我们得到的结论是，....

7.It can be concluded from the discussion that...从中我们可以得出这样的结论

8.From my point of view, it would be better if...在我看来……也许更好