5.(as) sick as a dog 病得很重：

Peter’s at home in bed, sick as a dog. 皮特卧床在家，病得很重。

6. treat sb like a dog把某人当狗看(不把某人当人看) ：

I don’t know why he stays with her —she treats him like a dog. 我不知道为什么他还跟她在一起，她根本不把他当人看。

7.dog-tired极度疲乏；筋疲力尽：

Such hard work can make him dog-tired. 如此繁重的工作使他疲惫不堪。

8.let sleeping dogs lie不要惹是生非；不要没事找事：

Green is trying to let sleeping dogs lie. 格林在努力避免招惹是非。

9. rain cats and dogs 下倾盆大雨：

It’s raining cats and dogs outside. 外面正下着倾盆大雨。

10. dog days三伏天；酷暑期：

I want to do nothing except for swimming in the dog days of summer. 在三伏天里，除了游泳我什么事也不想做。

11.a dog’s breakfast / dinner乱七八糟；一团糟：

He’s made a real dog’s breakfast of these accounts. 他把这些账目搞得简直一塌糊涂。

12.not have a dog’s chance毫无机会；绝无可能：

He hasn’t got a dog’s chance of passing the exam. 他根本不可能通过这次考试。

13. like a dog with two tails非常高兴；极开心

14. come like a dog at a whistle一呼即来

15. Every dog has its days. [谚语] 人人皆有得意之时。

Don’t give up and try your best I believe every dog has its day. 不要放弃，继续努力，我相信每个人都会有成功的时候。返回搜狐，查看更多