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SINCE WHEN

Posted: Fri Jun 20, 2014 7:12 am
by Tamdang
HI
I happen to see a sentence using "since when" and I try to summarize its usage as follows:
SINCE WHEN
1. since when + auxi V + S ?
usage:used for showing that you are surprised or annoyed by what someone has said or done, because it does not seem right, fair, or sincere.

Ex. Since when have you ever been concerned about my feelings?
(Từ lúc nào anh lại quan tâm đến cảm nghĩ của tôi ?)
Lưu ý: Trong trường hợp này động từ dùng được nhiều thì khác nhau.

Source: macmillandictionary

2. ……………, since when + S + V …….

Ex. The film was produced in 1979, since when the cultural management system has witnessed great changes.
= The film was produced in 1979. Since then, the cultural management system has witnessed great changes.'

Source: from native English Speaking people
Do you agree ? Please share with me.Thanks

Re: SINCE WHEN

Posted: Mon Jun 23, 2014 1:08 am
by Alan
Yes, your information is correct. In the first example, 'when' functions interrogatively, whereas in the second it functions as a relative.