1. 表述法：fifth wheel

释义：An unwelcome or extra person. （多余的人）

例句：I didn't realize that the party was for couples only, so when I showed up alone, I felt like a fifth wheel.

我没有意识到这个聚会只允许情侣参加，所以当我一个人出席的时候，我觉得自己是多余的。

I don't like living with my son and daughter-in-law. I feel like a fifth wheel.

我不喜欢和我的儿子儿媳住在一起，我觉得自己像个多余的人。

Bill always begs to come on camping trips with us, but really, he's a fifth wheel.

比尔总是恳求和我们一起去露营，但实际上他是个多余的人。

A: Did you have a good time at the party?

你在聚会上玩得开心吗?

B: Not really. Since my girlfriend didn’t come, I was a fifth wheel at the party.

不怎么好，因为我的女朋友没有来，我在晚会上便成了多余的人了。

2. 表述法：third wheel

释义：Someone who has no real place or purpose in a situation. （累赘，电灯泡）

例句：When Kelly invited me to go to the movies, I didn't know that her boyfriend would be joining us. I felt like a third wheel the entire night.

当凯丽邀请我去看电影时，我不知道她的男朋友会和我们一起去。我整个晚上都觉得自己像个电灯泡。

You two go ahead. I do not want to be a third wheel.

你们两个去好了，我不想当电灯泡。

I know that you are not trying be rude, but sometimes I feel left out, like a third wheel.

我知道你不是故意无礼，但有时我觉得自己被人冷落，和电灯泡没两样。

3. 表述：take the fifth

释义：To refuse to answer a question or provide information. （保持缄默，避而不答）

例句：The defendant took the fifth after every question the prosecution put to him.

被告对原告提出的每一个问题后，都避而不答。

Just take the fifth if your mom asks where you've been all night!

如果你妈妈问你整晚都去哪了，你就保持缄默，不要说。

Don’t ask me! I’ll take the fifth on that one. Go and ssk Fred.

别来问我，我不会说那件事情的，去问弗莱德吧。