how一般引导什么从句

I'll show you how to load the software.

我给你演示一下如何装入这套软件。

Now let me see ─ how old is she now?

让我想一想，她现在多大了呢？

How will the company be doing ten years further on?

十年以后公司的情况将如何呢？

How much will it cost, more or less?

这个大概得花多少钱？

I don't know how you can say things like that.

真想不到你怎么会说出这种话来。