在英语中，"了解国内大事" 可以用 "to stay informed about major events in the country" 来表示。这个表达方式来源于英语中常用的表示获取信息的词汇，例如 "stay informed" 或 "keep informed"。

下面是一些使用这个表达方式的英文例句，并附有中文翻译：

I try to stay informed about major events in the country by reading the news every day. (我每天看新闻来了解国内的大事。)
It's important to keep informed about what's going on in the country, especially when it comes to poptics. (了解国内的情况很重要，尤其是在政治方面。)
I subscribe to a few different news sources to stay informed about major events in the country. (我订阅了几家新闻媒体来了解国内的大事。)