英语中有很多俚语，如果我们按照字面意思理解的话，很容易理解错误，闹笑话。下面就列出一些与dog有关的俚语：

1、dog watch，你若以为是“狗在看”的意思，就闹笑话了！

在英语中，dog watch是指：  值夜班。

最初，dog watch在航海相关领域中指16:00到20:00之间的值班，后来渐渐发展到其他领域，用来表示“值夜班”。

John often has dog watches.

John经常上夜班。

2、the dog days of summer   三伏天

The dog days of summer are the hottest days of the year.

三伏天是一年中最热的日子。

These are the dog days; watermelons are just in season.

现在是伏天，西瓜正当令。

3、every dog has his day   凡人皆有得意日

Don't lose your hope, every dog has his day.

不要灰心，凡人皆有得意日。/ 不要灰心，每个人都有转运的一天。

They say that every dog has his day; but mine seems a very long time coming.

俗话说：“凡人皆有得意日”，可是我的得意日好像老是不来似的。

4、work like a dog   指一个人努力、卖力地工作

They say that to be successful, a person has to work like a dog.

他们说一个人想要成功就得拼命工作。

I should get a promotion because I've been working like a dog.

我最近一直非常努力工作，我应该升职。

5、dog-tired   疲惫不堪、筋疲力尽

Such hard work can make him dog-tired.

如此艰辛的工作使他疲惫不堪。

6、in the doghouse   惹上了麻烦

Her husband was in the doghouse for leaving her to cope on her own.

她的丈夫因弃她于不顾而陷入麻烦。

7、rain cats and dogs   倾盆大雨

It began to rain cats and dogs right after I stepped out the office building.

我刚走出办公楼就下起了倾盆大雨。

8、Can't teach an old dog new tricks   指有些人难以改变

I'm just used to doing it this way. Guess you can't teach an old dog new tricks.

我就是习惯这样做，大概真的很难改变了。