Thus, this is the reason why I caught a bad cold.

50. 所以?我们应该了解…。

Therefore, we should realize (that)子句

例︰所以?我们应该了解学英文不能没有字典。

Therefore, we should realize that in learning English we cannot do without a dictionary.

51. 因此?由上列的讨论我们可以明了…。

We, therefore, can make clear from the above discussion (that)子句

例︰因此?由上列的讨论我们可以明了毅力可以克服任何困难。

We, therefore, can make clear from the above discussion that perseverance can overcome any difficulty.

52.（1） 从～观点来看?…。 From the ～ point of view, ….

（2） 根据～的看法?…。 According to ～ point of view, ….

例︰从政治的观点来看?这是一个很复杂的问题。

From the political point of view, it is a very complex problem.