1.27th是twenty-seventh,读作:英[ˈtwenti ˈsevnθ]美[ˈtwenti ˈsevnθ]
2.27th的意思是第二十七;
3.[例句]I went to join in the celebration dinner party for the twenty-seventh Teachers Day this evening.今天晚上,我去参加庆祝第二十七个教师节的晚宴了。