不正确,news为不可数名词,所以不能加不定冠词a,
一般表达不能加a,I have good news to tell you
注意,虽然 news 看起来是复数名词,但事实上经常是不可数名词,如 Good news is always worth waiting for (好消息永远值得等待).不能说 a news;但当指某一特定事实或消息时,可以说 a piece of news,如 One of my Dutch colleagues told me a very exciting piece of news (一位荷兰同事告诉了我一个特别令人兴奋的消息).当谈论电视和广播新闻或报纸新闻时,可以把单独的故事或报道叫做 news item.