论证:

From my point of view, it is more reasonable to support the first opinion rather than the second.

在我看来,支持第一种观点比支持第二种观点更有道理.

I cannot entirely agree with the idea that… 我无法完全同意这一观点….

Personally, I am standing on the side of … 就个人而言,我站在…的一边.

I sincerely believe that… 我真诚地相信…

In my opinion, it is more advisable to do … than to do….

在我个人看来,做…比做…更明智.

Finally, to speak frankly, there is also a more practical reason why…

给出原因:

This phenomenon exists for a number of reasons. First, … Second, … Third, …

这一现象的存在是有许多原因的.首先, … 第二, … 第三, …

Why did… ?For one thing… For another…. Perhaps the primary reason is…

为什么会…? 一个原因是… 令一个原因是… 或许其主要原因是….

I quite agree with the statement that… the reasons are chiefly as follows.

我十分赞同这一论述,即…,其主要原因如下:

列出解决办法:

Here are some suggestions for handling… 这是如何处理某事的一些建议.

The best way to solve the troubles is… 解决这些麻烦的最好办法是…

People have figured out many ways to solve this problem.

人们已找出许多办法来解决这个问题.