1.mount作“山”解时，只能用在专有名词中，缩写形式是Mt.，如Mount Tai (Mt. Tai)（泰山），Mount Heng（Mt. Heng）（衡山）等。说到一座山时，不可用mount，应用mountain。例如：There is a high mountain near my hometown. 我的家乡附近有座高山。2.watch意思是“观看”，后接带有动词不定式的复合结构（宾语+宾补）时，动词不定式习惯上省略to。例如：And I want to watch people dance in the park. （动词dance前面省略了to）I watched him go into the building.（动词go前面省略了to）但在被动语态中，动词不定式前面的to不可省略。例如：People are watched to dance in the park.He was watched to go into the building.3. Come and visit Hunan! 相当于Come to visit Hunan!

[详情]