Fight like cat and dog 爭吵不休

How do cats and dogs fight? What type of situations can this phrase describe?
An animal phrase to describe a human situation.

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今日片語

很多人認為 “貓和狗” 是天敵。如果這兩種動物打起架來,那會是怎樣的一番情景呢?表達 “fight like cat and dog 像貓和狗一樣打架” 形容 “人與人之間的爭吵非常激烈、吵得不可開交”。

例句

My older brother and I used to fight like cat and dog when we were younger. We argued all the time.
我和我哥哥小的時候吵得很厲害,一天到晚吵個不停。

We can’t let them work together; they just fight like cat and dog. They never agree on anything.
我們不能讓他倆一起工作,不然他們會一直吵個不停的。這兩個人從來沒有在任何事上達成一致。

The two students didn’t like each other– they were always fighting like cat and dog. Their arguments disturbed the other students, so they were often asked to leave their class by the teacher.
那兩個學生彼此看不上眼,總吵個不停。他們的爭吵影響到了其他學生,所以老師經常把他倆請出教室。

BBC 英語教學