词：commonplace

英英释义：something that happens or exists in many places, so that it is not unusual

例句：Not carrying a wallet when going out has become a commonplace these days.

2. 为什么选这个词？

“commonplace”可以是形容词也可以是名词，之前我们学习过它的形容词用法，这一次学习它的名词用法。 commonplace 作可数名词最常见的意思是“平常的事、司空见惯的事”。它的常见用法比较固定，一般是 x has become a commonplace 和 It is a commonplace of x。我们可以用 commonplace 替换之前学过的小词 norm。下面我们通过几个例子掌握它的用法。

比如，现在移动支付非常方便，用手机扫码就可以搞定，出门不带钱包就成了司空见惯的事，可以说：

Not carrying a wallet when going out has become a commonplace these days.

现在一些年轻人大量使用金融借贷服务但却无法按时偿还，这种情况见怪不见，就可以说：

It's become a commonplace to see young people borrowing money heavily and failing to pay back on time.

对很多美国人来说，枪击事件已经是公共生活的一部分了，可以说：

Shootings have become almost a commonplace of public life for many Americans.

下面来看《经济学人》中的几个例子：

1）Turmoil has become a commonplace of financial markets in recent summers.

2）Tele-shiftworking, supposedly a commonplace of the globalised economy, throws up some perplexing difficulties for managers.

3）It is a commonplace of innovation—from railway gauges to semiconductors to software—that the “best” technology is not always the most successful.

4）It is a commonplace of linguistic philosophising that the way we speak and write shapes the way we think.

3. 怎样学会使用这个词？

翻译下面的句子：

同志酒吧现在已经很常见了。

（参考翻译：Gay bars have become a commonplace.)