tablet computer 平板电脑 laptop computer笔淋电脑 desktop computer台式机
e-reader 电子阅读器
smartphone 智能手机 game console游戏主机
开场：How can I help you?
目的：
购买方式：Cash or credit? dollars and * cents③
买不买：I'll take it. I need to think about it.
need to/want to /like to do①
Do you like to shop online?
It's on sale.在打折扣/It's 25% off.②
How would you like to pay? I d like to buy By credit card.
driver's license驾驶证.
Here's your receipt.
不规则比较级：
good - better than worse than farther than
easier than④
