1、筋疲力尽，这个表达不太正式，多用于口语。
I’m usually worn out at the end of the day. 在一天快结束时我时常觉得很累。
2、破旧不堪。
My soles were worn out after a long time trip.经过长时间的旅行，我的鞋底已经破旧不堪。
10、better
1、’d better 最好是
I’d better read one of the articles for the class. 我最好还是为上课读篇文章准备一下。
I think you’d better find another partner. 我想你最好还是另找一个搭档吧。
2、make it better 让……更好
I’d rewrite the last two paragraphs to make it better. 我已经重写了最后两段以使它更好。
3、be better 更好些
I told you it would be better for you if you took fewer courses during the first semester.
我告诉过你如果你在第一个学期少选一些课程会比较好一些。
11、bill
1、账单，买单。
I will pay the bill this time because last time you did it. 这次我来买单，因为上次是你。
2、提案。
We all passed the bill on yesterday’s board meeting.
在昨天的董事会上我们全票通过该提案。
3、纸币。
Here’s a 10-dollar bill. Give me two tickets for tonight’s show please.
这是一张10美元的纸币，请给我两张今晚演出的票，谢谢。
12、book
1、书。本意，简单名词。
2、预定，订购。 be booked up 被预定空了;booking office 售票处
All the morning flights have been booked up. 所有明早的飞机票都预定光了。