1. 释义&用法
happening often or often seen or experienced and so not considered to be special
e.g. Spelling errors are commonplace in Donald Trump's tweets.
既是名词也是形容词
形容词表示“平常的”“不足为奇”的，可替代not special, usual
名词表示“常见的事”；陈词滥调
e.g. Mobile payment systems are already commonplace across China.
TE：Households with just one child have become commonplace in Europe and the more prosperous parts of Asia, including China. That means each child has more time, money and energy invested in it, but missed out on the hustle and bustle of a large household.
XX have become commonplace. That means...
2. 常见搭配
be, seem, become, regard sth as...
e.g. Such actions were regarded as commonplace during the war.
very, enough, fairly, quite, rather
e.g. Her situation sounded commonplace enough.
among/amongst
e.g. These ideas are commonplace among teenagers.
3.翻译&造句
(1)翻译: 去国外度假已经变得越来越平常。
Taking a holiday overseas has become more and more commonplace.
参考翻译：Foreign vacations have become increasingly commonplace.
Holidaying abroad has become increasingly commonplace.
(2)造句：留学在中国越来越平常。
Studying abroad has become increasingly commonplace in China.
