我说‘礼貌用语’有点太笼统了。具体一点是,在你想礼貌地表达我要怎样、或我想怎样、或我要干什么时,用would like to so sth 和用进行时表达的区别。
比如说,我要休一天班,是用I woulk like to take a day off, 还是 I'm taking a day off tomorrow, 还是都不对?谢谢!