A: You come back so earlly. The party is boring? 你回來的這麼早。舞會沒意思?
B: All the boys and girls were dancing at the party while I sat at a tablealone, feeling like a fifth wheel.晚會上，所有的'男孩和女孩都在跳舞，只有我孤零零地坐在桌邊，感覺自己彷彿是一個多餘的人。
雖然現在很多機車，特別是越野車的後面也會備上一個備用輪胎，但它們稱之爲spare wheel,或者spare tyre. 而不能稱爲the fifthwheel.
更多例句：
The chair is a fifth wheel, please take it away. 這把椅子是多餘的，請把它搬走。
A mother-in-law on a honeymoon is a fifth wheel. 度蜜月時，丈母孃是個大電燈泡。
We decided to fire that worker, he was just a fifth wheel.我們決定開除那個工人，他不過是個多餘無用之人。
My son asked me to come help at his school track meet I felt fifth wheelwhen I got there: they already had enough people to help so I stood therefeeling useless.我的兒子要我在他學校開運動會的時候去幫忙。可是，我到了那裏覺得自己似乎是多餘的，他們已經有好多人在幫忙，我只好站在那裏沒事幹。”
有關the fifth wheel的用法我們暫時瞭解到這裏，記得一定要和sparewheel進行區別。它們分別表示“無用的;局外人”和“備用輪胎”。
