For X Since – Quando usar cada um

By 8 de junho de 2017Grammar

For

Use FOR if you don’t have to calculate the period of time, because you have it in the sentence:

 

I have lived here FOR two months (you don’t have to calculate, you know the period is “two months”)

 

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Since

Use SINCE if you have to calculate the period of time, because you only have the starting point:

 

I have lived here SINCE 1975 (you have to calculate now: if you came in 1975 – the starting point – and now it is 2009, then 2009-1975 = 24 years)

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