How formal or informal is this expression?

这个表达是正式的还是非正式的？

Look at these sentences and tell me if they're formal or informal.

看句子，然后告诉我是正式的还是非正式的。

" Gig" is an informal way musicians talk about jobs.

Gig 是音乐人作的一种非正式的方式。

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

我们搞了个非正式的投票。

It can be as formal or informal as you like.

正式和非正式的都可以。

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

你可以用正式的问候或者非正式的问候。

This is a very informal way of saying, what are you doing?

这是一种问你在做什么的非常非正式的表达方式。

Maybe it would not have the quality of informal language Taupin was hoping for.

也许它就失去了陶平想要的非正式语言的质感。

An informal version is to be over the moon.

非正式的说法是“兴高采烈”。

So I have got 21 advanced alternatives, ranging from formal to informal.

所以我准备了21个高级的替代表达方式，从正式的到非正式的。

And maybe you're undertaking some less formal training.

也许你正在接受一些非正式的培训。

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

这个想法是通过非正式的习产生的。

This expression can also be an informal invitation.

这个表达也可以是一种非正式的邀请。

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

我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.

它们可以在正式和非正式的场合穿。

These are not informal, they're all fine.

这些都不是非正式的说法，都可以。

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。

In those days, etiquette was very important, an invisible informal system of law and regulation.

在那个时代，礼仪是非常重要的，它是一种无形的非正式的法律法规体系。

Beth, is there anything that you've learnt to do informally?

贝丝，你有没有过什么非正式的东西？

We use 'catch' to say goodbye informally.

我们使用“catch”来表达非正式的再见。