he lived in china when he was born 为什么不用since

he lived in china when he was born 为什么不用since
he lived in china when he was born 为什么不用since

he lived in china when he was born 为什么不用since
he lived in china when he was born
因为都是过去式.
注意下面的区别::
He has been living in china since he was born
他从出生,一直住在中国.

如果用since ，前面的主句就要用现在完成时