It's an irregular plural because there's no 's'.

它是不规则复数形式，因为没有 s。

It's an irregular plural that refers to the different types of thing in the same category.

这是不规则复数名词，指的是一样东西的不同种类。

Please be careful, this has an irregular plural form.

请注意，这是不规则的复数形式。

This is an irregular plural; " one-foot" , " two feet" , doesn't matter.

这是一个不规则的复数； “一尺”、“两尺”，无所谓。

I wanted to talk today about a different kind of irregular plural.

我今天想谈谈另一种不规则复数。

The next word is ''woman'' And woman also has an irregular plural form.

下一个词是''woman'' woman 也有不规则的复数形式。

It's an irregular plural you don't add an S to.

这是一个不规则的复数，你不加 S。

So there are several different kinds of irregular plurals that's why this video is called part one.

所以有几种不同的不规则复数，这就是为什么这个视频被称为第一部分。

Today we're talking about another kind of irregular plural noun, and that is the foreign plural.

今天我们要说的是另一种不规则复数名词，那就是外来复数。

Today we're going to be discussing more irregular plurals.

今天我们要讨论更多的不规则复数。

Indexes is, again, the informal regular plural, but indices is the more formal irregular plural.

Indexes 再次是非正式的规则复数，但 indices 是更正式的不规则复数。

But I've been talking about the irregular plural, the plural, the multiple form of a verb that is not regular, irregular.

但我一直在谈论不规则复数，复数，不规则动词的复数形式，不规则。

So, this is the irregular plural part II, the two-ening.

所以，这是不规则复数部分 II，二元化。

And then, there are a couple of different kinds of irregular plurals.

然后，有几种不同的不规则复数。

But I'm only going to cover one such irregular plural today and that is the change from singular f to plural v.

但我今天只讨论一个这样的不规则复数，那就是从单数 f 到复数 v 的变化。

So I made this little chart to go over the six most common Latin and Greek irregular plurals that you're going to encounter in English.

所以我制作了这个小图表来了解您将在英语中遇到的六个最常见的拉丁语和希腊语不规则复数形式。

This one is Greek and it's the change from final -is to final -es, as in the word thesis in the singular becoming theses in the irregular plural.

这是希腊语，它是从词尾 -is 到词尾 -es 的变化，就像单数形式的 thesis 变成不规则复数形式的 theses 一样。

Secondly the ending change from final -us to final -i, which we find in a word like fungus, is the singular, and then the irregular plural of that is fungi.

其次词尾-us变词尾-i，fungus是单数形式，不规则复数形式是fungi。

I'd like to introduce something else too, the word child is also an irregular plural because its plural form is not childs, but in fact, you ready, say it with me, children.

我还要介绍点别的，child这个词也是不规则复数，因为它的复数形式不是childs，但事实上，你准备好了，跟我说吧，children。

So you take a word like larva in the singular, which is like a little baby bug, like an ant larva, or a caterpillar larva, and the traditional irregular plural, the Latin plural of that, is larvae, -ae.

所以你用单数形式的幼虫这个词，就像一只小虫子， 像一只蚂蚁幼虫， 或者一只毛毛虫幼虫， 传统的不规则复数，拉丁复数，是幼虫，-ae。