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的一天

Don’t give up and try your best I believe every dog has its day.

不要放棄，繼續努力，我相信每個人都會有成功的時候。