how后面应该用什么时态

how为连接副词，引导名词性从句，后动词可为一般现在时：动词单数形一般过去时：动词过去式还可接情态动词.

扩展资料

Now let me see ─ how old is she now?

让我想一想，她现在多大了呢

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

In this class， students will learn how to program.