先把整段听一遍，再逐句练习。
Hoa
I need a pen and an eraser.
我需要一支笔和一块橡皮。
Nam
How many pens? One, two, three?
要几支笔？一支、两支，还是三支？
Four pens, please. And five books.
请给我四支笔，还有五本书。
Six, seven, eight... here are nine books.
六、七、八……这是九本书。
Ten is better. It's a good price.
十本更好。这个价格很合理。
