基数词和序数词的缩写

基数词缩写:1→1st,2→2nd,3→3rd。序数词缩写:1→1st,2→2nd,3→3rd。"
2023年,北京,100+次,我总结:基数词“和”序数词缩写,简单记:1-10的序数词后加“th”,比如“2nd”,其余看情况,如“21st”、“30th”等,记住“-y”变“-i”再加“th”,如“21st”变“21st”。

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