很久以前的用法和样例：
例句
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我只是在很久以前听说过这件事。
I only heard of the story in the far past. -
那是很久以前的事了。
That was a great while ago. -
在很久很久以前，牧童都是游牧者，赶着他们的牧群到处寻找青草和水源。
A long, long time ago, cowboys were wanderers, driving their herd from place to place, looking for fresh grass and water. -
很抱歉，我想不起来了--那是很久以前的事了。
I'm afraid I can't remember it was such a long time ago. -
很久以前，地球上生活着巨大的动物。
Long ago enormous animals lived on the earth.
