1、Three significant factors /reasons give rise to the situation/phenomenon(不好的现象) mentioned above.
2、What gives rise to the situation/phenomenon(不好的现象) can be summed as follows.3、It is not difficult to come up with some possible explanations for these changes.4、The contributing factors to this phenomenon can be summarized as follows.5、What accounts for=explain this scenario? At least, for my part, three factors contribute to it.6、This situation may have many causes; but the following three are more significant.
原因一引导词：
At the top of the list, ....First and foremost, with the rapid development of our economy and society, ....To begin with, these changes are closely related to ....In the first place/instance, this trend is the result of ....原因二引导词：In addition, we must admit that this tendency also has a lot to do with ....Besides / What’s more, there is no denying that this current situation is largely the result of …Moreover, we should not ignored that the trend derives partly from ....Furthermore, we must emphasize that this adverse situation is, at least to a certain degree, caused by....原因三引导词：Last but not the least, / Last but not least important, ... is another significant factor that we can not ignore.What we should also highlight here is that ....Lastly, the economy also plays a vital/significant/active role in the occurrence of this phenomenon.Finally, without doubt, ... also has a contributing effect on the current condition.
夜雨聆风
