1、long long ago
英[lɔŋ lɔŋ əˈɡəu] 美[lɔŋ lɔŋ əˈɡo]
[词典] 很久很久以前;
[例句]Long long ago, there were four great inventions.
很久很久以前，就有了四大发明。
2、a long time ago
英[ə lɔŋ taim əˈɡəu] 美[e lɔŋ taɪm əˈɡo]
adv. 很久以前; 悠远;
[例句]He must have started writing his book a long time ago.
他一定很久以前就开始写这本书了。
3、long time ago
英[lɔŋ taim əˈɡəu] 美[lɔŋ taɪm əˈɡo]
adv. 很久以前;
[例句]
In my neighbourhood, the local crack dealers would have taken him out a long time ago.
我们这片的本地毒贩早就想废了他了。
4、once upon a time
英[wʌns əˈpɔn ə taim] 美[wʌns əˈpɑn e taɪm]
[词典] 从前;
[例句]Once upon a time, there lived an old man who had two beautiful daughters.
从前，有一个老人，他有两个美丽的女儿。
5、long long time ago
网络 很久很久以前; 潘神的迷宫;
[例句]In fact this process of aging, started long long time ago, from when I just grew up to a young girl, at age18?
而我的衰老，从很早的时候就已经开始了，在我还刚刚成长为少女的时候。十八岁？