2--He's still pretty sick.

1--That's too bad. What does he have?

2--We don't know, but he's going to the doctor tomorrow.

1--Let me know if there's anything I can do.

2--Thanks a lot. I'll tell him.

===================================
注解：
 
1.lately最近  
2.pretty sick病得非常重       
3.Thanks a lot多谢了    

===================================
译文：

1--最近都没看到比尔。他怎么样？

2--他仍然病得很严重。

1--真糟糕。他患了什么病？

2--我们不知道，但他打算明天去看病。

1--如果有我能帮忙的请告诉我。

2--多谢了。我会告诉他的。