Usage intermediate medium
Since = starting point; for = duration.
Usage — Common choices, confusions and preposition errors.
1. for + duration: for two years, for an hour, for ages. 2. since + starting point: since 2010, since Monday, since morning. 3. Both are used with perfect tenses: I have lived here for five years / since 2015. 4. In "It's been..." constructions: It has been raining since 9 o'clock. 5. "Since" can introduce a clause: since I moved here.
Choose by what follows: a length of time → for; a point in time → since. "I have known him for ten years" vs "since 2015".
हिंदी में
For के साथ अवधि (two years) और since के साथ शुरुआती बिंदु (2015, Monday) आता है। Perfect tenses के साथ प्रयोग होता है।
Q1. "Since" is used with a point in time and "for" with a period of time.
Answer: True
💡 That is the core distinction.
Q2. Find the error: "We have been waiting since two hours."
Answer: since two hours
💡 "Two hours" is a duration → "for two hours".
Q3. Find the error: "He is working here since 2016."
Answer: is working
💡 Continuing to the present → "has been working".
Take a free placement test to find your level, practise Since / For with instant feedback, then take a timed test.
Open Since / For lesson → Free practice — Sign up| Topic | Level | What it covers |
|---|---|---|
| Singular / Plural | beginner | Making nouns singular and plural correctly. |
| Countable / Uncountable Nouns | elementary | Nouns you can count vs nouns you cannot. |
| Much / Many | elementary | Much for uncountable, many for countable. |
| Few / Little | intermediate | Few for countable, little for uncountable — with or without "a". |
| Some / Any | elementary | Some in positives and offers; any in negatives and questions. |
| Each / Every | intermediate | Each singles out; every groups all together. |
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