Ⅰ. most adv. 前无冠词,一般表“很、十分”如:
① Most likely it will rain. 很可能要下雨了。
② The author is most serious in writing the essay. 作者写这篇文章的态度是很严肃的。
Ⅱ. a most 后接形容词,修饰单数可数名词,意思是“很,十分”如:
① That was a most enjoyable party. 那是一次非常快乐的晚会。
② These children lead a most happy life. 这些孩子过着非常幸福的生活。
Ⅲ. the most 是much or many 的级。意为“最”如:
① That’s the most beautiful place I’ve ever been. 那是我到过的最美丽的地方。