所有的序数词英语

1～20英语序数词为first，second，third，fourth，fifth，sixth，seventh，eighth，ninth，tenth，eleventh，twelfth，thirteenth，fourteenth，fifteenth，sixteenth，seventeenth，eighteenth，nineteenth，twentieth。

序数词在汉语中表示为“第几”。此外，在生日中，描述出生的日期时，也会用到序数词。比如：May-first（5月1日）；在英语学习中，常常需要区分基数词和序数词。

句法功能

序数词在句中可作主语、宾语、定语、表语、同位语与状语。

1、The first is better than the second.

第一个比第二个要好。（作主语）

2、She chose the second.

她选择了第二个。（作宾语）

3、The second term begins in January.

第二学期从一月份开始。（作定语）

4、I am the third in our class.

我是我们班的第三名。（作表语）

5、John, the first, is here.

约翰第一个到了这里。（作同位语）

6、I finished the work first.

我最先完成那项工作。（作状语）

1到100序数词：1到20为：first、second、third、fourth、fifth、sixth、seventh、eighth、ninth、tenth、eleventh、twelfth、thirteenth、fourteenth、fifteenth、sixteenth、seventeenth、eighteenth、nineteenth、 twentieth21到40为：twenty-first、twenty-second、twenty-third、twenty-fourth、twenty-fifth、twenty-sixth、twenty-seventh、twenty-eighth、twenty-ninth、thirtieth、thirty-first、thirty-secondthirty-third、thirty-fourth、thirty-fifth、thirty-sixth、thirty-seventh、thirty-eighth、thirty-ninth、fortieth41到60为：forty-first、forty-second、forty-third、forty-fourth、forty-fifth、forty-sixth、forty-seventh、forty-eighth、forty-ninth、fiftieth、fifty-first、fifty-second、fifty-third、fifty-fourth、fifty-fifth、fifty-sixth、fifty-seventh、fifty-eighth、fifty-ninth、sixtieth61到80为：sixty-first、sixty-second、sixty-third、sixty-fourth、sixty-fifth、sixty-sixth、sixty-seventh、sixty-eighth、sixty-ninth、seventieth、seventy-first、seventy-second、seventy-thirdseventy-fourth、seventy-fifth、seventy-sixth、seventy-seventh、seventy-eighth、seventy-ninth、eightieth81到100为：eighty-first、eighty-second、eighty-third、eighty-fourth、eighty-fifth、eighty-sixth、eighty-seventh、eighty-eighth、eighty-ninth、ninetieth、ninety-first、ninety-secondninety-third、ninety-fourth、ninety-fifth、ninety-sixth、ninety-seventh、ninety-eighth、ninety-ninth、one hundredth扩展资料：序数词记忆歌诀：第1、2、3、12单独记第五第九均无e整十y变ie，然后再加-th整十带个是“基 + 序”； 其余直接加-th说明：序数词有两种写法：①用英语单词②用“阿拉伯数字+词尾-st/-nd/-r/-thfirst—1st eleventh—11th twenty-first—21stsecond—2nd twelfth—12th twenty-second—22nd third—3rdthirteenth—13th twenty-third—23rdfourth4—4th fourteenth—14th twenty—fourth 24th