近年来，人们的思想越来越开放了。以前被视为禁忌的婚前性行为也在被更多的人所接受。那么，“婚前性行为”用英语怎么表达？请看《中国日报》的相关报道：

The survey, “Sex and Sexuality of Chinese 2000-06”, which was released this week, found that roughly two-thirds of people said premarital sex was “acceptable” today.

The survey, conducted by the Institute of Sexuality and Gender¹ at the Renmin University of China and financed by the Ford² Foundation, polled more than 6,000 people aged³ 18-61 from 21 provinces, autonomous⁴ regions and municipalities across the country.

报道中说，中国人民大学性社会学研究所发布的《中国人的性行为与性关系：历史发展2000-2006》调查报告显示，接受调查的6000多人中，有2/3的人接受婚前性行为。

这里的“premarital sex”指的就是“婚前性行为”。“Premarital”是一个合成词，“marital”是“婚姻的”意思，“pre-”是常见的前缀，意思是“在……之前”，合在一起就是“婚前的”意思。类似的带前缀“pre-”的词还有“pre-tax”（税前的）、“preadolescent”（青春期前的）和“precollege”（进大学前的、大学预科的）等。

此外，“婚前性行为”还可以用“sex before marriage”来表达。如：Women's tolerance⁵ of sex before marriage had also increased greatly. （女性对婚前性行为的态度也更加宽容了。）