laurance--You look happy today!

　　soony--I am happy.I just heard I passed my physics exam

　　laurance--Congratulations!I'm glad somebody's happy.

　　soony--Why?What's the matter?

　　laurance--Oh,I'm just worried,I guess I have to take

　　a history exam next week.

　　注解：

　　1)I am happy：注意重音在am上，以示强调。

　　2)physics：物理学。

　　3)I'm glad somebody's happy:somebody重读，显示说话者本人心里有些忧虑。

　　4)What's the matter=What's troubling you

　　5)I'm worried:此句中worried是过去分词作表语，不是被动语态