He asked his mother where it happened 和He asked his mother how it happened到底那个句子正确

问题描述:

He asked his mother where it happened 和He asked his mother how it happened到底那个句子正确

都正确.
第一句是:他问他的妈妈事情是在哪里发生的.
第二句是:他问他的妈妈事情是如何发生的.