"the time before 高三课本上有这么一句,Dreamtime is often said to mean "the time before time",or the point when all things are created.其中的这个短语不是很了解.望翻译整句.我明天是要教给学生的，不要误导我啊，一楼一看就不对。

看英文解释比较有力。Dreamtime 译成“造物时代”较好。
The expression 'Dreamtime' is most often used to refer to the 'time before time', or 'the time of the creation of all things', while 'Dreaming' is often used to refer to an individual's or group's set of beliefs or spirituality.
For instance, an Indigenous Australian might say that they have Kangaroo Dreaming, or Shark Dreaming, or Honey Ant Dreaming, or any combination of Dreamings pertinent to their 'country'. However, many Indigenous Australians also refer to the creation time as 'The Dreaming'.
What is certain is that 'Ancestor Spirits' came to Earth in human and other forms and the land, the plants and animals were given their form as we know them today.
These Spirits also established relationships between groups and individuals, (whether people or animals) and where they traveled across the land, or came to a halt, they created rivers, hills, etc., and there are often stories attached to these places.
Once their work was done, the Ancestor Spirits changed again; into animals or stars or hills or other objects. For Indigenous Australians, the past is still alive and vital today and will remain so into the future. The Ancestor Spirits and their powers have not gone, they are present in the forms into which they changed at the end of the 'Dreamtime' or 'Dreaming', as the stories tell.
The stories have been handed down through the ages and are an integral part of an Indigenous person's 'Dreaming'.
Each tribe has its individual dreamtime although some of the legends overlap. Most 'Dreamtime' originates with the Giant Dog or the Giant Snake, and each is unique and colourful in its explanation.
Legends of the 'Dreamtime' are handed down by word of mouth and by totem from generation to generation.
It involves some secret rituals and rites, and some classified as 'Mens Business' and some as 'Womens Business'.
Colorful, symbolic and enthusiastic dancing and corroborees are used to pass on the stories of the creation.

就是做梦的那段时间是你清醒的时间的前一段,

这个句子中有个关键是：Dreamtime 意为：（澳大利亚土著神话中的）开天辟地时期
所以这句话就不难了,意为：人们经常说开天辟地时期指的是”时间之始”,或者是天地万物被创造出来的那个时间点．

在此时的之前```````就是以前~~