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Araştırma Görevlisi
We often use for and since when talking about time.
for + period
A period is a duration of time, for example: 5 minutes, 2 weeks, 6 years. For means "from the beginning of the period until the end of the period." For can be used with all tenses.
since + point
A point is a precise moment in time, for example: 9 o'clock, 1st January, Monday. Since means "from a point in the past until now." Since is normally used with perfect tenses.
For can be used with all tenses. Here are a few examples:
* They study for two hours every day.
* They are studying for three hours today.
* He has lived in Bangkok for a long time.
* He has been living in Paris for three months.
* I worked at that bank for five years.
* Will the universe continue for ever?
For is NOT used with "all day", "all the time" etc.
* I was there all day. (not *for all day)
Since is normally used with perfect tenses:
* He has been here since 9am.
* He has been working since he arrived.
* I had lived in New York since my childhood.
Since can also be used in the structure "It is [period] since...":
* It is a year since I saw her.
* How long is it since you got married?
NOTE:
for + period
A period is a duration of time, for example: 5 minutes, 2 weeks, 6 years. For means "from the beginning of the period until the end of the period." For can be used with all tenses.
since + point
A point is a precise moment in time, for example: 9 o'clock, 1st January, Monday. Since means "from a point in the past until now." Since is normally used with perfect tenses.
For can be used with all tenses. Here are a few examples:
* They study for two hours every day.
* They are studying for three hours today.
* He has lived in Bangkok for a long time.
* He has been living in Paris for three months.
* I worked at that bank for five years.
* Will the universe continue for ever?
For is NOT used with "all day", "all the time" etc.
* I was there all day. (not *for all day)
Since is normally used with perfect tenses:
* He has been here since 9am.
* He has been working since he arrived.
* I had lived in New York since my childhood.
Since can also be used in the structure "It is [period] since...":
* It is a year since I saw her.
* How long is it since you got married?
NOTE:
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