from then on 和 since then 有什么区别

from then on 和 since then 有什么区别
from then on 和 since then 有什么区别

from then on 和 since then 有什么区别
since then一般用于现在完成时 eg:Since then,they haven't got on well each other.
from then on一般用于过去时和完成时.

since then一般用在完成时态
1.But since then nothing has happened .
但自那以来，什么都没有发生。

from then on用于过去时态和完成时态
1.From then on , magic had to be young William 's life .
从此以后，小威廉注定要献身魔术。...

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since then一般用在完成时态
1.But since then nothing has happened .
但自那以来，什么都没有发生。

from then on用于过去时态和完成时态
1.From then on , magic had to be young William 's life .
从此以后，小威廉注定要献身魔术。
2.From then on , the fairy weaver stayed in heaven , and the cowherd stayed on earth .
从此，织女留在天上，而牛郎则待在人间。

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