Dog（狗）：常指人，好人坏人都可以；bitch（母狗），则指泼妇。 You are a lucky dog. 你真是个幸运儿。My boss is a jolly dog. 我的老板是个风趣的家伙。Every dog has his day. 凡人都有得意时。David works like a dog. David工作真卖劲儿。The film must be a real dog. 这部电影一定很糟糕。Your partner is a dirty dog. 你的合伙人是个卑鄙小人。The poet died like a dog. 这位诗人潦倒而死。They treated him like a dog. 他们把他看得粪土不如。You can't teach an old dog new tricks. 老人难改变。He is really a dead dog. 他是个没用的东西。Don't talk to me like that，you bitch！你这泼妇，别跟我这样说话。（慎用）There is no point in having a dog-eat-dog attitude.情景对话A：We are just making a living here and I thind there is no point in having a dog-eat-dog attitude.B：You are absolutely right.We should be more cooperative.A：我们都是在这里谋生，我想采取相互攻击的态度是没有意义的。B：你是对的，我们应该精诚合作。在英语中，由动物构成的英语短语诙谐幽默、秒趣横生并且寓意深刻。有时在口语中用上几句，会令人有耳目一新的感觉。但使用时要注意东西方文化中动物的比喻和象征的差异，以免造成误解。