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。
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。
