你买了东西吗？我什么也没买。（帮忙用英文翻译一下）

Did you buy anything?
No, I didn't buy anything.

Have you bought anything?
I have not bought anything./I have bought nothing.

或者
Did you buy anything?
I didn't buy anything. /I bought nothing.

你买了东西吗？ Did you buy something?

我什么也没买。 Nothing.

第一句容易错用anything,其实这里应该用something，表示希望肯定答复！

rogerlawroy好样的！难得遇到了解此语法点的朋友！

分情况！！
如果说是一个人说的：
Did you buy anything?
I didn't.

如果是两个人说的：
Did you buy something?
nothing.

这里说明一下，关于疑问句用ANYTHING还是SOMETHING得问题
其实在标准语法中已经淡化了这个要求
语言是根据传播规律来定的，就是说跟着口语变化来变化，所以说基本上用哪一个都不错，但考试没办法，只能用ANYTHING

标准的英语语法就是：疑问句和否定句中，something最为主语后的名词，必须转变成anything。 不要在这里误人子弟了。

Did you buy anything?

I didn't buy anything.