In informal situations, you could say furious.

在非正式场合，你可说愤怒。

In informal English, we can bend certain rules.

在非正式英语，们可某些规则。

Now, the next one I'm going to give you is slightly informal.

下一个词有点非正式。

Slang is a type of informal language.

俚语是一种非正式语言。

So, we had an informal vote over there...

们搞了个非正式的投票。

How formal or informal is this expression?

这个表达是正式的还是非正式的？

Of course, speaking informally goes beyond word choice.

当然，非正式语言仅限于词语选择。

And maybe you're undertaking some less formal training.

也许你正在接受一些非正式的培训。

So 'maybe', we can say, is a rather informal word.

maybe——也许，用于非正式场合。

These are all British English expressions that we use in informal situations.

这些都是英式英语的非正式用法。

As with many rhyming compounds, nitty-gritty is informal.

和许多押韵复合词一样，nitty-gritty是非正式用语。

And that's quite common in informal spoken English.

这在非正式英语口语中非常常见。

And the idea that came to me was through informal learning.

这个想法是通过非正式的学习产生的。

This expression can also be an informal invitation.

这个表达也可是一种非正式的邀请。

Now, you can have formal greetings or you can have informal greetings.

你可用正式的问候或者非正式的问候。

We have lots of informal ways to tell people to be quiet.

们有很多非正式的表达让人们安静。

They can be worn in both formal and informal situations.

它们可在正式和非正式的场合穿。

These are not informal, they're all fine.

这些都是非正式的说法，都可。

There are plenty of informal ways to describe this phenomenon.

有很多非正式的方式来描述这种现象。

Yeah. And it can be used in informal situations as well.

是的。它也可用在非正式场合。