1到30的英语基数词和序数词

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1到30的英语基数词和序数词

1~30的基数词依次为one,two,three,four,five,six,seven,eight,nine,ten,eleven,twelve,thirteen,fourteen,fifteen,sixteen,seventeen,eighteen,nineteen,twenty,twenty-one,twenty-two,twenty-three,twenty-four,twenty-five,twenty-six,twenty-seven,twenty-eight,twenty-nine,thirty。

1~30的序数词依次为first,second,third,fourth,fifth,sixth,seventh,eighth,ninth,tenth,eleventh,twelfth,thirteenth,fourteenth,fifteenth,sixteenth,seventeenth,eighteenth,nineteenth,twentieth,twenty-first,twenty-second,twenty-third,twenty-fourth,twenty-fifth,twenty-sixth,twenty-seventh,twenty-eighth,twenty-ninth,thirtieth。

知识扩展:

表示分数时分子用基数词,分母用序数词

基数词:描述事物数量的多少。主要表示事物或人物的个数。

基数词在句中可作主语、宾语、定语、表语、同位语。

The two happily opened the pencil case.

两个人高兴地打开了铅笔盒。(作主语) I need two altogether. 我总共需要二个。(作宾语)

Six students are playing volleyball outside.

六个学生在外面打排球。(作定语)

We are sixteen. 我们是16个人。(作表语)

They three tried to finish the task before sunset.

他们三个人尽力想在日落前完成任务。(作同位语)

序数词:表示顺序的数词

序数词在句中可作 主语、 宾语、定语和 表语。

The second is what I really need. 第二个是我真正需要的。(作主语)

He chooses the second. 他挑选了第二个。(作宾语)

We are to carry out the first plan. 我们将执行第一个计划。(作定语)

She is the second in our class.在我们班她是第二名。(作表语)

如何将基数词变为序数词?

将基数词变为序数词,通常会在基数词后加th,比如基数词四是four,其序数词是fourth。 不过,并非所有序数词都如此。一、二、三的序数词比较特殊。一的序数词是first,二的序数词是second,三的序数词是third。五、八、九、十二的序数词也比较特殊,五的序数词是fifth,八的序数词是eighth,九的序数词是ninth。到了20之后的数字,比如23,就是twenty-third。

以此类推,我们就能写出所有的序数词。