i have been wacthing TV since 3 hours 5个同义句

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i have been wacthing TV since 3 hours 5个同义句
i have been wacthing TV since 3 hours 5个同义句

i have been wacthing TV since 3 hours 5个同义句
the original sentence is grammatically wrong.
you want to say,you've been watching tv for 3 hours,or,you've been watching tv since 3 o'clock?
I've been watching tv for 3 hours.
I've been watching tv since 3 hours ago.
it is 3 hours since I've been watching tv.
I started watching tv 3 hours ago.
3 hours have passed since I started watching tv.

I have been watching TV for 3 hours.
I watched TV for 3 hours (till) now.
楼主这句话什么意思？

It is 3 hours since I watched TV .
It has been 3 hours since I watched TV.
I have been watching TV since 3 hours ago.
I have spent 3 hours watching TV.
It takes me 3 hours to watch TV.

这是一个病句应该是 i have been wacthing TV for 3 hours
I've been watching tv since 3 hours ago
It is 3 hours since I watched TV
3 hours has passed since I watched tv.
I watched TV 3 hours ago
i started to watch tv 3 hours ago

i have been wacthing TV since 3 hours 5个同义句 I have been selling I have been trying I have ever been I too have been I have been to. I have been I have been in. I have been there,have been 是have been in还是have been to的缩写? i have always been there i have never been there I HAVE NEVER BEEN,能否说I never have been I have been so serious I have been so serious I-have-been-at-home I have always been you I have been loving you I have been a person . I have never been away! I have been wet through