I went to Australia on vacation .对 on vacation提问怎么说?急用

问题描述:

I went to Australia on vacation .对 on vacation提问怎么说?急用

老师讲的是why
on vacation也用why

When did you go Australia?你何时去了澳大利亚?

When did you go tu Australia?提问时间
on vacation是在假期中;for vacation就为了度假.
如果是for就是用Why提问

Why did you go to Aurtralia?