狗是人類的親密朋友，在人們的生活、工作中扮演著不可或缺的重要角色。在美國，人們喜歡狗，美國人因此也喜歡使用很多和狗相關的短語表達。
1、to lead a dog's life 形容人過著貧困潦倒、慘不忍睹的生活
Tom’s been leading a dog's life since he got divorced.
湯姆自離婚后一直過著混沌潦倒的日子。
2、dog eat dog 殘酷、競爭激烈
Some people say we live in a dog-eat-dog world.
有人說，我們生活在一個競爭激烈的世界。
3、work like a dog 指一個人努力、賣命地工作
They say that to be successful, a person has to work like a dog.
他們說，一個人想要成功就得拼命工作。
4、dog-tired 筋疲力盡
Such hard work can make him dog-tired.
如此堅辛的工作使他疲憊不堪。
5、sick as a dog 病得嚴重
The situation would be even worse if she became sick as a dog.
如果她病得厲害，情況會更糟。
6、Every dog has its days.每個人都有屬于自己的運氣/每個人都有時來運轉(zhuǎn)的一天
Don't give up and try your best I believe every dog has its day.
不要放棄，繼續(xù)努力，我相信每個人都會有成功的時候。