what和how后面加什么词性

What +形容词+可数名词复数或不可数名词+主语+谓语+……！

What +a+ 形容词+可数名词单数+主语+谓语+……！

How +形容词/副词+主语+谓语+……！

how主要感叹形容词或副词

What time did you get here?

你什么时候到达这儿的？

What in the world did they think they were doing?

他们到底认为自己在做什么？

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。

How many people were there?

有多少人？