DIALOG 21
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。