用since和for改写句子the river is dirty.it became dirty two years agothe book is interesting.i borrowed it a week agohe is not in beijing now.he left beijing two hours agotina and martin live happily,ther married in2008tom likes playing soccer.h

用since和for改写句子the river is dirty.it became dirty two years agothe book is interesting.i borrowed it a week agohe is not in beijing now.he left beijing two hours agotina and martin live happily,ther married in2008tom likes playing soccer.h
用since和for改写句子
the river is dirty.it became dirty two years ago
the book is interesting.i borrowed it a week ago
he is not in beijing now.he left beijing two hours ago
tina and martin live happily,ther married in2008
tom likes playing soccer.he joined the soccer club on monday

用since和for改写句子the river is dirty.it became dirty two years agothe book is interesting.i borrowed it a week agohe is not in beijing now.he left beijing two hours agotina and martin live happily,ther married in2008tom likes playing soccer.h
1 The river is dirty.it has been dirty since two years ago.
/
The river is dirty.it has been dirty for two years .
2 The book is interesting.I have kept it since a week ago.
/
The book is interesting.I have kept it for a week .
3 He is not in beijing now.he has been away from beijing since two hours ago.
/
He is not in beijing now.he has been away from beijing for two hours .
4 Tina and martin live happily,they have been married since 2008.
5 Tom likes playing soccer.he has been in the soccer club since Monday.

the river has been dirty for two years.
i borrowed the book a week ago since it is interesting.
he is not in beijing now since he left two hours ago.
tina and martin have lived happily since 2008 when they married.
tom joined the soccer club on monday since he likes playing soccer.

<1>The river has been dirty since two years ago.
The river has been dirty for two years.
<2>The book is interesting.i have kept it since last week.
The book is interesting.i ha...

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<1>The river has been dirty since two years ago.
The river has been dirty for two years.
<2>The book is interesting.i have kept it since last week.
The book is interesting.i have kept it for a week.
<3>He is not in beijing now.he has left beijing since two hours ago.
He is not in beijing now.he has left beijing for two hours.
<4>Tina and Martin live happily,they have been married since 2008.
Tina and Martin live happily,they have been married for years.
<5>Tom likes playing soccer.he has been in the soccer club since monday.
Tom likes playing soccer.he has been in the soccer club for days.
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