Many people go to on vacation Australia in summer.这个句子对吗?

问题描述:

Many people go to on vacation Australia in summer.这个句子对吗?

不对,我估计你想表达的是many people go to Australia in the summer holiday.

Many people go to Australia on vacations in summer.
或者
Many people go to Australia for vacations in summer.
都是可以的.