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Kumenglish Posted 7 years ago
Grammar

Since when

Since when has the book been on the table?

Since when has the book been there?

Can I ask like in these ways?

  

Top answer

These are informal or casual English expressions. Do not use "since when" in formal situations. This is standard English: How long has the book been on the table?

— AlpheccaStars

  • These are informal or casual English expressions.
  • Do not use "since when" in formal situations.
  • This is standard English: How long has the book been on the table?
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1 Answers
0

These are informal or casual English expressions. Do not use "since when" in formal situations. This is standard English:

How long has the book been on the table?

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