跪求英语高手帮我造几个多重定语从句，非限定和限定句都要```顺便帮我翻译一下`!

Michael, who has been working on collaborative songwriting through the internet, thinks that the medium shows great promise, but Norah is not so sure about the quality that such an endeavor can produce.

一直利用互联网为合辑工作的麦克认为网络媒介展现出了巨大的希望，但是诺拉不太确信这份努力能收到效果。

1 Do you know the boy who is drawing by the river?
2 This is the place where I was born.
3 Bijing, which will host the 2008 Olympics, is now becoming more beautiful.
4 No one knows the reason why he is absent.
1 你认识那个在河边画画的男孩吗？
2这就是我的出生地．
3北京将举办2008年奥运会，如今变得更美丽了．
4没人知道他没来的原因．