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