Now, let's see what happens.

那么，让我们看看会发生什么。

The second point I want to make is…

我要讲的第二个知识点是······

If that's clear, we will go on to the next point.

都明白了的话，我们就开始讲下一个知识点。

Now let's approach the problem in a different way.

现在，咱们换一种方法解这个问题。

I'd like to finish talking about…before we move on to…

讲完关于······的内容，我们再来看······